CN221301322U - Waste acid pyrolysis heat recovery device - Google Patents
Waste acid pyrolysis heat recovery device Download PDFInfo
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- CN221301322U CN221301322U CN202322879744.2U CN202322879744U CN221301322U CN 221301322 U CN221301322 U CN 221301322U CN 202322879744 U CN202322879744 U CN 202322879744U CN 221301322 U CN221301322 U CN 221301322U
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- steam
- waste acid
- heat exchanger
- heat recovery
- pipeline
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- 239000002253 acid Substances 0.000 title claims abstract description 38
- 239000002699 waste material Substances 0.000 title claims abstract description 38
- 238000011084 recovery Methods 0.000 title claims abstract description 30
- 238000000197 pyrolysis Methods 0.000 title claims abstract description 27
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 45
- 239000003546 flue gas Substances 0.000 claims abstract description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000007921 spray Substances 0.000 claims abstract description 19
- 238000011282 treatment Methods 0.000 claims abstract description 19
- 239000000498 cooling water Substances 0.000 claims abstract description 17
- 238000005507 spraying Methods 0.000 claims abstract description 17
- 238000005336 cracking Methods 0.000 claims abstract description 16
- 239000002918 waste heat Substances 0.000 claims abstract description 14
- 230000001105 regulatory effect Effects 0.000 claims description 20
- 238000012423 maintenance Methods 0.000 claims description 11
- 239000007789 gas Substances 0.000 claims description 9
- 238000000746 purification Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 abstract description 22
- 230000008901 benefit Effects 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011418 maintenance treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
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Abstract
The application discloses a waste acid pyrolysis heat recovery device, and relates to the technical field of process equipment. The waste acid pyrolysis heat recovery device comprises a waste acid pyrolysis furnace, a waste heat recovery system and a flue gas treatment system; the waste heat recovery system comprises a tube type steam heat exchanger and a water spraying attemperator, wherein a tube side inlet of the tube type steam heat exchanger is connected with a flue gas outlet of the waste acid cracking furnace through a pipeline, and a tube side outlet of the tube side inlet is connected with the flue gas treatment system through a pipeline; the shell side inlet of the shell side heat exchanger is connected with a low-pressure steam source through a pipeline, and the shell side outlet of the shell side heat exchanger is connected with the steam inlet of the water spraying attemperator through a pipeline; the steam outlet of the water spray attemperator is connected with a steam user through a pipeline, and the cooling water inlet of the water spray attemperator is connected with a cooling water source. The method can effectively recycle the waste heat in the flue gas generated by pyrolysis to obtain high-temperature steam for users to use, and has extremely high economic benefit.
Description
Technical Field
The application relates to the technical field of process equipment, in particular to a waste acid cracking heat recovery device.
Background
In the existing waste acid cracking process, high-temperature flue gas produced from waste acid cracking equipment is subjected to a series of treatments such as temperature reduction and the like, and finally purified and discharged. In the process, most of heat carried by the high-temperature flue gas is directly emitted, and economic benefit is not maximized.
Disclosure of Invention
The application aims to provide a waste acid pyrolysis heat recovery device which can effectively recycle waste heat in flue gas generated by pyrolysis to obtain high-temperature steam for users to use and has extremely high economic benefit.
The technical scheme of the application is as follows:
the embodiment of the application provides a waste acid cracking heat recovery device, which comprises a waste acid cracking furnace, a waste heat recovery system and a flue gas treatment system;
The waste heat recovery system comprises a tube type steam heat exchanger and a water spraying attemperator, wherein a tube side inlet of the tube type steam heat exchanger is connected with a flue gas outlet of the waste acid cracking furnace through a pipeline, and a tube side outlet of the tube side inlet is connected with the flue gas treatment system through a pipeline; the shell side inlet of the shell side heat exchanger is connected with a low-pressure steam source through a pipeline, and the shell side outlet of the shell side heat exchanger is connected with the steam inlet of the water spraying attemperator through a pipeline; the steam outlet of the water spray attemperator is connected with a steam user through a pipeline, and the cooling water inlet of the water spray attemperator is connected with a cooling water source.
Compared with the prior art, the embodiment of the application has at least the following advantages or beneficial effects:
In view of the above, the embodiment of the application provides a waste acid pyrolysis heat recovery device, which comprises a waste acid pyrolysis furnace, a waste heat recovery system and a flue gas treatment system, wherein the waste heat recovery system further comprises a tube type steam heat exchanger and a water spraying attemperator, in the actual working process, the waste acid pyrolysis furnace carries out pyrolysis production on waste acid materials to obtain high-temperature flue gas, the high-temperature flue gas is sent to a tube side of the steam heat exchanger to exchange heat with low-pressure steam in a shell side of the tube type steam heat exchanger, the high-temperature flue gas in the tube side is sent to the flue gas treatment system to be subjected to subsequent treatment and purification for emission after heat exchange and cooling, and the low-pressure steam in the shell side is further sent to the water spraying attemperator after heat exchange and temperature rise, and the temperature and pressure of the steam are further regulated by the water spraying attemperator for use by a steam user side.
In the process, the tube type steam heat exchanger is utilized to recycle the waste heat in the high-temperature flue gas generated by pyrolysis, and the low-pressure steam absorbs and heats the heat in the high-temperature flue gas and then regulates and controls the temperature and the pressure of the steam through the water spraying attemperator so as to meet the requirements of steam users. Therefore, the heat in the high-temperature flue gas can be fully recycled, so that the economic benefit of the whole process is improved, and the method is more beneficial to actual production popularization and application.
Further, in some embodiments of the present application, a temperature control bypass is further provided at the tubular steam heat exchanger, and the temperature control bypass is connected to the waste acid cracking furnace and the flue gas treatment system across the tubular steam heat exchanger, respectively.
In the above embodiment, if the temperature of the high-temperature flue gas generated by pyrolysis is too low or is difficult to meet the requirement of the subsequent treatment process after heat exchange of the shell and tube heat exchanger, the above temperature control bypass may be started to directly send out the high-temperature flue gas, so as to control the temperature of the outlet flue gas.
Further, in some embodiments of the present application, an expansion joint and a butterfly valve are disposed on the temperature control bypass.
In the embodiment, the expansion joint and the butterfly valve are arranged on the temperature control bypass to better control the opening and closing of the bypass, so that the high-temperature smoke quantity flowing through the bypass is regulated and controlled, the equipment is protected, the service life of the equipment is prolonged, and the use safety and stability of the equipment are improved.
Further, in some embodiments of the present application, a temperature detector and a pressure detector are disposed at a tube side outlet and a tube side inlet of the tube type steam heat exchanger.
In the embodiment, the temperature detector and the pressure detector are utilized to monitor the inlet and outlet temperatures of the tube side of the tube type steam heat exchanger, so that the pressure and temperature conditions of high-temperature flue gas are mastered, and the control is convenient at any time, the normal process production can be ensured, the safety and stability of equipment are improved, and the occurrence of unexpected situations is avoided.
Further, in some embodiments of the present application, the flue gas treatment system includes a furnace gas cooler, a low temperature preheater, a high temperature preheater, and a purification unit connected in sequence by a pipeline; the furnace gas cooler is connected with a tube side outlet of the tube type steam heat exchanger through a pipeline.
In the above embodiment, after heat exchange and temperature reduction of the high-temperature flue gas by the tubular steam heat exchanger, the high-temperature flue gas sequentially passes through the furnace gas cooler, the low-temperature preheater and the high-temperature preheater to be treated, and finally is sent to the purification unit to be purified so as to meet the emission requirement.
Further, in some embodiments of the present application, an automatic regulating valve is provided on a line connecting the above-described water spray attemperator and a cooling water source.
In the above embodiments, the flow rate of the cooling water that is connected to the water spray attemperator can be controlled by an automatic regulating valve.
Further, in some embodiments of the present application, manual valves are disposed on both side pipelines of the automatic adjusting valve; the automatic regulating valve is provided with a maintenance bypass, and the maintenance bypass spans the automatic regulating valve and the manual valve to be respectively connected with the water spraying attemperator and the cooling water source.
In the above embodiment, the manual valves on both sides of the automatic regulating valve are normally kept in a normally open state, and the maintenance bypass is not started, and when the automatic regulating valve fails, the manual valves on both sides can be closed, the maintenance bypass is started to maintain normal process production, and after the automatic regulating valve is maintained, the maintenance bypass can be stopped, the manual valves on both sides are opened, and the automatic regulating valve is continuously put into production for use.
Further, in some embodiments of the present application, a flow meter, a temperature detector, a pressure detector, and a stop valve are respectively disposed on the pipeline connecting the tubular steam heat exchanger and the low-pressure steam source.
In the embodiment, the flow rate of the low-pressure steam fed into the shell and tube steam heat exchanger is monitored and controlled through the flowmeter and the stop valve, and meanwhile, the temperature and the pressure are monitored by the temperature detector and the pressure detector so as to be convenient to regulate and control at any time, maintain the normal operation of the equipment and avoid accidents.
Further, in some embodiments of the present application, a flow meter, a temperature detector, a pressure detector, and a shut-off valve are provided on a line connecting the above-described water spray attemperator and a steam consumer.
In the embodiment, the flow rate of steam sent to a steam user is monitored and controlled through the flowmeter and the stop valve, and meanwhile, the temperature and the pressure of the steam are monitored by the temperature detector and the pressure detector so as to be convenient to regulate and control at any time, maintain the normal operation of equipment and avoid accidents.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a process flow structure of a waste acid cracking heat recovery device provided by the application.
Icon: the device comprises a 1-waste acid cracking furnace, a 2-tubular steam heat exchanger, a 3-water spraying attemperator, a 4-temperature control bypass, a 41-expansion joint, a 42-butterfly valve, a 5-furnace gas cooler, a 6-low temperature preheater, a 7-high temperature preheater, an 8-automatic regulating valve, a 9-manual valve, a 10-maintenance bypass, an 11-flowmeter, a 12-temperature detector, a 13-pressure detector and a 14-stop valve.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the embodiments of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and the like should be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The present application will be described in detail with reference to specific examples.
Example 1
Referring to fig. 1, the present embodiment provides a waste acid cracking heat recovery device, which includes a waste acid cracking furnace 1, a waste heat recovery system and a flue gas treatment system;
the waste heat recovery system comprises a tube type steam heat exchanger 2 and a water spraying attemperator 3, wherein a tube side inlet of the tube type steam heat exchanger 2 is connected with a flue gas outlet of the waste acid cracking furnace 1 through a pipeline, and a tube side outlet of the tube side inlet is connected with the flue gas treatment system through a pipeline; the shell side inlet of the shell side heat exchanger 2 is connected with a low-pressure steam source through a pipeline, and the shell side outlet of the shell side heat exchanger is connected with the steam inlet of the water spraying desuperheater 3 through a pipeline; the steam outlet of the water spray attemperator 3 is connected with a steam user through a pipeline, and the cooling water inlet of the water spray attemperator 3 is connected with a cooling water source.
The tubular steam heat exchanger 2 is also provided with a temperature control bypass 4, and the temperature control bypass 4 spans the tubular steam heat exchanger 2 and is respectively connected with the waste acid cracking furnace 1 and the flue gas treatment system.
The temperature control bypass 4 is provided with an expansion joint 41 and a butterfly valve 42.
The tube side outlet and the tube side inlet of the tube type steam heat exchanger 2 are respectively provided with a temperature detector 12 and a pressure detector 13.
The flue gas treatment system comprises a furnace gas cooler 5, a low-temperature preheater 6, a high-temperature preheater 7 and a purification unit which are connected in sequence through pipelines; the furnace gas cooler 5 is connected with a tube side outlet of the tube type steam heat exchanger 2 through a pipeline.
An automatic regulating valve 8 is arranged on a pipeline connecting the water spraying attemperator 3 and a cooling water source.
The two side pipelines of the automatic regulating valve 8 are provided with manual valves 9; a maintenance bypass 10 is provided at the automatic control valve 8, and the maintenance bypass 10 is connected to the water spray attemperator 3 and the cooling water source across the automatic control valve 8 and the manual valve 9, respectively.
A flow meter 11, a temperature detector 12, a pressure detector 13 and a stop valve 14 are respectively arranged on the pipelines connecting the tubular steam heat exchanger 2 and the low-pressure steam source.
A flow meter 11, a temperature detector 12, a pressure detector 13 and a shut-off valve 14 are arranged on a pipeline connecting the water spray attemperator 3 and a steam user.
The working process is as follows:
The waste acid cracking furnace 1 is used for producing high-temperature flue gas, the high-temperature flue gas enters the tube side of the tube type steam heat exchanger 2 and exchanges heat with low-pressure steam which is connected to the shell side of the tube type steam heat exchanger 2, the flue gas subjected to heat exchange and temperature reduction sequentially enters the furnace gas cooler 5, the low-temperature preheater 6 and the high-temperature preheater 7, and finally enters the purification unit for purification and emission; the steam subjected to heat exchange and temperature rise enters a water spray attemperator 3, the water spray attemperator 3 is connected with cooling water, and the steam is conveyed to a steam user after the temperature and the pressure of the steam are regulated and controlled by the water spray attemperator 3.
When the temperature of the outlet flue gas needs to be controlled, a temperature control bypass 4 can be started, and the high-temperature flue gas which is not subjected to heat exchange is mixed with the flue gas after heat exchange by utilizing the control of a butterfly valve 42; when the automatic regulating valve 8 fails, the manual valve 9 can be closed, the maintenance bypass 10 is started, the cooling water supply of the water spray attemperator 3 is ensured, and meanwhile, the automatic regulating valve 8 is damaged for maintenance treatment. Furthermore, the entire device monitors the operating conditions by means of the temperature detector 12 and the pressure detector 13.
In summary, the embodiment of the application provides a waste acid pyrolysis heat recovery device, which utilizes a tubular steam heat exchanger 2 to recover waste heat in high-temperature flue gas generated by pyrolysis, and low-pressure steam absorbs and heats the heat in the high-temperature flue gas and regulates and controls the temperature and pressure of the steam through a water spraying attemperator 3 so as to meet the requirements of steam users. Therefore, the heat in the high-temperature flue gas can be fully recycled, so that the economic benefit of the whole process is improved, and the method is more beneficial to actual production popularization and application.
The embodiments described above are some, but not all embodiments of the application. The detailed description of the embodiments of the application is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Claims (9)
1. The waste acid pyrolysis heat recovery device is characterized by comprising a waste acid pyrolysis furnace, a waste heat recovery system and a flue gas treatment system;
The waste heat recovery system comprises a tube type steam heat exchanger and a water spraying attemperator, wherein a tube side inlet of the tube type steam heat exchanger is connected with a flue gas outlet of the waste acid cracking furnace through a pipeline, and a tube side outlet of the tube side heat exchanger is connected with the flue gas treatment system through a pipeline; the shell side inlet of the shell side heat exchanger is connected with a low-pressure steam source through a pipeline, and the shell side outlet of the shell side heat exchanger is connected with the steam inlet of the water spraying attemperator through a pipeline; the steam outlet of the water spray attemperator is connected with a steam user through a pipeline, and the cooling water inlet of the water spray attemperator is connected with a cooling water source.
2. The waste acid pyrolysis heat recovery device according to claim 1, wherein a temperature control bypass is further arranged at the tubular steam heat exchanger, and the temperature control bypass spans the tubular steam heat exchanger and is respectively connected with the waste acid pyrolysis furnace and the flue gas treatment system.
3. The waste acid pyrolysis heat recovery device according to claim 2, wherein the temperature control bypass is provided with an expansion joint and a butterfly valve.
4. The waste acid pyrolysis heat recovery device according to claim 1, wherein a temperature detector and a pressure detector are arranged at a tube side outlet and a tube side inlet of the tube type steam heat exchanger.
5. The waste acid pyrolysis heat recovery device according to claim 1, wherein the flue gas treatment system comprises a furnace gas cooler, a low-temperature preheater, a high-temperature preheater and a purification unit which are connected in sequence through pipelines; and the furnace gas cooler is connected with a tube side outlet of the tube type steam heat exchanger through a pipeline.
6. The waste acid pyrolysis heat recovery device according to claim 1, wherein an automatic regulating valve is arranged on a pipeline connecting the water spray attemperator and a cooling water source.
7. The waste acid pyrolysis heat recovery device according to claim 6, wherein manual valves are arranged on two side pipelines of the automatic regulating valve; the automatic regulating valve is provided with a maintenance bypass, and the maintenance bypass spans the automatic regulating valve and the manual valve to be respectively connected with the water spraying attemperator and the cooling water source.
8. The waste acid pyrolysis heat recovery device according to claim 1, wherein a flow meter, a temperature detector, a pressure detector and a stop valve are respectively arranged on a pipeline connecting the tubular steam heat exchanger and the low-pressure steam source.
9. The waste acid pyrolysis heat recovery device according to claim 1, wherein a flow meter, a temperature detector, a pressure detector and a stop valve are arranged on a pipeline connecting the water spray attemperator and a steam user.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322879744.2U CN221301322U (en) | 2023-10-25 | 2023-10-25 | Waste acid pyrolysis heat recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322879744.2U CN221301322U (en) | 2023-10-25 | 2023-10-25 | Waste acid pyrolysis heat recovery device |
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| Publication Number | Publication Date |
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| CN221301322U true CN221301322U (en) | 2024-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202322879744.2U Active CN221301322U (en) | 2023-10-25 | 2023-10-25 | Waste acid pyrolysis heat recovery device |
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| CN (1) | CN221301322U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119393752A (en) * | 2024-11-29 | 2025-02-07 | 武汉钢铁有限公司 | Electric heating device and method for steam superheating |
-
2023
- 2023-10-25 CN CN202322879744.2U patent/CN221301322U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119393752A (en) * | 2024-11-29 | 2025-02-07 | 武汉钢铁有限公司 | Electric heating device and method for steam superheating |
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