[go: up one dir, main page]

GB2059377A - A method of pneumatically conveying fine-grain fuel to a gasifier - Google Patents

A method of pneumatically conveying fine-grain fuel to a gasifier Download PDF

Info

Publication number
GB2059377A
GB2059377A GB8030536A GB8030536A GB2059377A GB 2059377 A GB2059377 A GB 2059377A GB 8030536 A GB8030536 A GB 8030536A GB 8030536 A GB8030536 A GB 8030536A GB 2059377 A GB2059377 A GB 2059377A
Authority
GB
United Kingdom
Prior art keywords
gasifier
tank
conduit
fuel
pressurised
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB8030536A
Other versions
GB2059377B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dr C Otto and Co GmbH
Saarbergwerke AG
Original Assignee
Dr C Otto and Co GmbH
Saarbergwerke AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dr C Otto and Co GmbH, Saarbergwerke AG filed Critical Dr C Otto and Co GmbH
Publication of GB2059377A publication Critical patent/GB2059377A/en
Application granted granted Critical
Publication of GB2059377B publication Critical patent/GB2059377B/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/72—Other features
    • C10J3/723—Controlling or regulating the gasification process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/34—Details
    • B65G53/66—Use of indicator or control devices, e.g. for controlling gas pressure, for controlling proportions of material and gas, for indicating or preventing jamming of material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/46—Gasification of granular or pulverulent flues in suspension
    • C10J3/48—Apparatus; Plants
    • C10J3/50—Fuel charging devices
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/72—Other features
    • C10J3/78—High-pressure apparatus
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J2300/00—Details of gasification processes
    • C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
    • C10J2300/0913—Carbonaceous raw material
    • C10J2300/093—Coal

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Air Transport Of Granular Materials (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Feeding And Controlling Fuel (AREA)

Abstract

Fine-grain fuel (12) is fed from a supply tank (11), through a closure device (19) and into a conduit (17) which leads to a gasifier (10). Propellent gas is supplied through a pipe (13), and a pressure maintaining gas is supplied to the tank (11) through a conduit (15). Differential pressure between the tank (11) and the gasifier (10) is measured by a device (20) which acts on a controller (24) to determine the rate of flow of pressure maintaining gas through a valve (16). This enables the rate of feed of the fine-grain fuel through the conduit (17) to be maintained at a predetermined value which is linearly dependent upon the differential pressure between the tank (11) and the gasifier (10). <IMAGE>

Description

SPECIFICATION A method of pneumatically conveying finegrain fuel to a gasifier This invention relates to a method of operating a device for the pneumatic conveyance of finegrain fuels to a gasifier, from a pressurised supply tank through a conveying pipe, a pressure maintaining gas being introduced into the tank through an entry valve.
It is known to provide a pressurised tank of this kind with a nozzle assembly, in the form of a vertically adjustable conduit extending through the tank wall and supplied with a conveying gas, an open pipe of the same size being disposed axially above the top end of the conduit and serving to convey the fuel (such as a ground and dried coal) to the gasifier. The bottom end of the conduit is adjustable by up to about 50 mm for example. The height of an annular gap between the two pipe ends can thus be adjusted and the gap can also be closed.
The object of this invention is to control, in a simple way, the quantity of fuel fed from the pressurised tank to the gasifier.
Experiments with pneumatic conveyors of this kind have surprisingly shown that there is a linear relationship between the quantity of fine-grain fuel fed to the gasifier through the conduit connecting the pressurised tank and the gasifier, and the difference in pressures between the pressurised tank on the one hand and the gasifier on the other.
Accordingly, the invention proposes a method of operating a device for the pneumatic conveyance of fine-grain fuels from a pressurised tank to a gasifier through a conveying pipe passing through the tank, wherein propellent gas is supplied to the conveying pipe and a pressure maintaining gas is introduced into the tank through an entry valve, the quantity of fuel supplied to the gasifier being controlled by a device which measures the difference between the pressure in the pressurised tank and the pressure in the gasifier.
The control device can, for example, be effective to vary the rate of flow of the pressure maintaining gas fed into the pressurised tank. The control can also be effected by influencing other operating variables on which the amount of fuel fed to the conveying conduit is dependent.
Ideally, the device includes a set-value transmitter which can be set to ensure a predetermined rate of fuel supply to the gasifier.
This set-value transmitter will then determine a specific differential pressure equivalent to the required quantity of delivered fuel. If the actual value deviates from the set value, a control member will be actuated by means of which the rate of flow of pressure maintaining gas can be altered.
The invention may be performed in various ways and one preferred embodiment thereof will now be described with reference to the accompanying drawing which illustrates diagrammatically one means of performing the new process in a plant for conveying fine-grain fuel to a gasifier.
A gasifier 10 and a pressurised tank 11 are shown purely diagrammatically. Fine-grain coal 12 is shown filling the pressurised tank 11. Propellent gas is supplied through a gas supply pipe 1 3 which contains a valve 14 subject to the action of an instrument 26 for controlling the gas throughput. A conduit 1 5 supplies a flow of pressure maintaining gas to the tank 11, and this conduit contains a valve 1 6. The coal is conveyed from the tank 11 to the gasifier 10 via a conduit 17.
Conduit portion 13 and conveying conduit 17 are connected by a conduit 1 8 extending through the tank 11. Inside the region filled with fine-grain coal 12 the conduit 1 8 is provided with a closure device 1 9 which, when it is open, allows the finegrain fuel to pass from the tank 11 into the conduit 18 and then into the conveying conduit 17.
A device 20 is connected on the one hand by a conduit 21 to the tank 11 and on the other hand via a conduit 22 to the gasifier 10. This device 20 measures the difference in the pressures between the tank 11 and the gasifier 10. This differential pressure is an index of the amount of fine-grain material conveyed through the conduit 1 7.
Equally, the amount of fuel fed per unit of time to the gasifier 10 determines the differential pressure measured by the device 20. To keep the amount of fuel constant, a specific value must be maintained for the differential pressure between the gasifier 10 and the pressurised tank 1 The required differential pressure value is fed into a set-value transmitter 23. The devices 20 and 23 act upon a controller 24.If the latter detects deviations of the actual value measured by the device 20 from the set value, it influences a valve 1 6 via a conduit 25, and hence alters the supply of pressure maintaining gas, in the direction such that the predetermined value for the differential pressure between the pressurised tank and the gasifier is restored; thus the quantity of fine-grain fuel delivered to the gasifier via the conduit 17 has the predetermined value.
It is clear that this type of control for the operation of the gasifier is verv simple and requires only simple equipment.
1. A method of operating a device for the pneumatic conveyance of fine-grain fuels from a pressurised tank to a gasifier through a conveying pipe passing through the tank, wherein propellent gas is supplied to the conveying pipe and a pressure maintaining gas is introduced into the tank through an entry valve, the quantity of fuel supplied to the gasifier being controlled by a device which measures the difference between the pressure in the pressurised tank and the pressure in the gasifier.
2. A method according to claim 1, wherein the control device is effective to vary the rate of flow of pressure maintaining gas fed into the
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (6)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION A method of pneumatically conveying finegrain fuel to a gasifier This invention relates to a method of operating a device for the pneumatic conveyance of finegrain fuels to a gasifier, from a pressurised supply tank through a conveying pipe, a pressure maintaining gas being introduced into the tank through an entry valve. It is known to provide a pressurised tank of this kind with a nozzle assembly, in the form of a vertically adjustable conduit extending through the tank wall and supplied with a conveying gas, an open pipe of the same size being disposed axially above the top end of the conduit and serving to convey the fuel (such as a ground and dried coal) to the gasifier. The bottom end of the conduit is adjustable by up to about 50 mm for example. The height of an annular gap between the two pipe ends can thus be adjusted and the gap can also be closed. The object of this invention is to control, in a simple way, the quantity of fuel fed from the pressurised tank to the gasifier. Experiments with pneumatic conveyors of this kind have surprisingly shown that there is a linear relationship between the quantity of fine-grain fuel fed to the gasifier through the conduit connecting the pressurised tank and the gasifier, and the difference in pressures between the pressurised tank on the one hand and the gasifier on the other. Accordingly, the invention proposes a method of operating a device for the pneumatic conveyance of fine-grain fuels from a pressurised tank to a gasifier through a conveying pipe passing through the tank, wherein propellent gas is supplied to the conveying pipe and a pressure maintaining gas is introduced into the tank through an entry valve, the quantity of fuel supplied to the gasifier being controlled by a device which measures the difference between the pressure in the pressurised tank and the pressure in the gasifier. The control device can, for example, be effective to vary the rate of flow of the pressure maintaining gas fed into the pressurised tank. The control can also be effected by influencing other operating variables on which the amount of fuel fed to the conveying conduit is dependent. Ideally, the device includes a set-value transmitter which can be set to ensure a predetermined rate of fuel supply to the gasifier. This set-value transmitter will then determine a specific differential pressure equivalent to the required quantity of delivered fuel. If the actual value deviates from the set value, a control member will be actuated by means of which the rate of flow of pressure maintaining gas can be altered. The invention may be performed in various ways and one preferred embodiment thereof will now be described with reference to the accompanying drawing which illustrates diagrammatically one means of performing the new process in a plant for conveying fine-grain fuel to a gasifier. A gasifier 10 and a pressurised tank 11 are shown purely diagrammatically. Fine-grain coal 12 is shown filling the pressurised tank 11. Propellent gas is supplied through a gas supply pipe 1 3 which contains a valve 14 subject to the action of an instrument 26 for controlling the gas throughput. A conduit 1 5 supplies a flow of pressure maintaining gas to the tank 11, and this conduit contains a valve 1 6. The coal is conveyed from the tank 11 to the gasifier 10 via a conduit 17. Conduit portion 13 and conveying conduit 17 are connected by a conduit 1 8 extending through the tank 11. Inside the region filled with fine-grain coal 12 the conduit 1 8 is provided with a closure device 1 9 which, when it is open, allows the finegrain fuel to pass from the tank 11 into the conduit 18 and then into the conveying conduit 17. A device 20 is connected on the one hand by a conduit 21 to the tank 11 and on the other hand via a conduit 22 to the gasifier 10. This device 20 measures the difference in the pressures between the tank 11 and the gasifier 10. This differential pressure is an index of the amount of fine-grain material conveyed through the conduit 1 7. Equally, the amount of fuel fed per unit of time to the gasifier 10 determines the differential pressure measured by the device 20. To keep the amount of fuel constant, a specific value must be maintained for the differential pressure between the gasifier 10 and the pressurised tank 1 The required differential pressure value is fed into a set-value transmitter 23. The devices 20 and 23 act upon a controller 24.If the latter detects deviations of the actual value measured by the device 20 from the set value, it influences a valve 1 6 via a conduit 25, and hence alters the supply of pressure maintaining gas, in the direction such that the predetermined value for the differential pressure between the pressurised tank and the gasifier is restored; thus the quantity of fine-grain fuel delivered to the gasifier via the conduit 17 has the predetermined value. It is clear that this type of control for the operation of the gasifier is verv simple and requires only simple equipment. CLAIMS
1. A method of operating a device for the pneumatic conveyance of fine-grain fuels from a pressurised tank to a gasifier through a conveying pipe passing through the tank, wherein propellent gas is supplied to the conveying pipe and a pressure maintaining gas is introduced into the tank through an entry valve, the quantity of fuel supplied to the gasifier being controlled by a device which measures the difference between the pressure in the pressurised tank and the pressure in the gasifier.
2. A method according to claim 1, wherein the control device is effective to vary the rate of flow of pressure maintaining gas fed into the pressurised tank.
3. A method according to claim 1 or claim 2, wherein the device includes a set-value transmitter which can be set to ensure a predetermined rate of fuel supply to the gasifier.
4. A method according to claim 1 and substantially as herein described with reference to the accompanying drawing.
5. Apparatus for controlling the rate of supply of fine-grain fuel from a supply tank to a gasifier through a conduit and comprising a pressuremaintaining gas supply pipe into the tank, a measuring device for determining the difference in pressure between the tank and the gasifier and a control device which controls the rate of feed of fuel to the gasifier in response to variations in differential pressure registered by the measuring device.
6. Apparatus according to claim 5 and substantially as herein described.
GB8030536A 1979-09-22 1980-09-22 Method of pneumatically conveying finegrain fuel to a gasifier Expired GB2059377B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792938369 DE2938369A1 (en) 1979-09-22 1979-09-22 METHOD FOR PNEUMATICALLY CONVEYING FINE GRAIN FUEL TO A CARBURETOR

Publications (2)

Publication Number Publication Date
GB2059377A true GB2059377A (en) 1981-04-23
GB2059377B GB2059377B (en) 1983-12-07

Family

ID=6081560

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8030536A Expired GB2059377B (en) 1979-09-22 1980-09-22 Method of pneumatically conveying finegrain fuel to a gasifier

Country Status (9)

Country Link
AU (1) AU6246680A (en)
BR (1) BR8006000A (en)
CA (1) CA1156697A (en)
DE (1) DE2938369A1 (en)
FR (1) FR2466044A1 (en)
GB (1) GB2059377B (en)
IN (1) IN153341B (en)
PL (1) PL226791A1 (en)
ZA (1) ZA805781B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2509702A1 (en) * 1981-07-17 1983-01-21 Freiberg Brennstoffinst PROCESS FOR REGULATING CURRENT FLOWS OF PULVERULENT OR FINE-GRANULATED PRODUCTS
EP0114916A3 (en) * 1982-12-27 1986-02-19 Kawasaki Steel Corporation Method of distributing and transporting powdered or granular material
EP0335071A1 (en) * 1988-03-26 1989-10-04 Krupp Koppers GmbH Process and apparatus for pneumatically conveying a finely granulated to powdered fuel into a high pressure gasification reactor
EP0350658A1 (en) * 1988-07-14 1990-01-17 Krupp Koppers GmbH Process for metering and controlling the mass flow of fuels in the partial oxidation of finely divided to powdery fuels
CN111272508A (en) * 2020-02-29 2020-06-12 天津大学 A device for packing dry particles into a Hull-Shore sheet by air
CN120505122A (en) * 2025-04-08 2025-08-19 徐州达希能源技术有限公司 Gasifying device for light oil hydrogen blending

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4432994C2 (en) * 1994-09-16 2003-01-30 Gerd Krischik Plant for the discharge of fine dust
CN108628352B (en) * 2018-04-19 2021-07-06 兰州空间技术物理研究所 A kind of automatic control device for gasification flow of solid working medium

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1345088A (en) * 1962-10-24 1963-12-06 Siderurgie Fse Inst Rech Improvements to the methods of regulating injections of pulverulent products into the blast furnace nozzles
DE2703736C2 (en) * 1977-01-29 1982-11-25 Freier Grunder Eisen- Und Metallwerke Gmbh, 5908 Neunkirchen Device for pneumatic upward conveyance of powdery or fine-grained bulk material

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2509702A1 (en) * 1981-07-17 1983-01-21 Freiberg Brennstoffinst PROCESS FOR REGULATING CURRENT FLOWS OF PULVERULENT OR FINE-GRANULATED PRODUCTS
EP0114916A3 (en) * 1982-12-27 1986-02-19 Kawasaki Steel Corporation Method of distributing and transporting powdered or granular material
EP0335071A1 (en) * 1988-03-26 1989-10-04 Krupp Koppers GmbH Process and apparatus for pneumatically conveying a finely granulated to powdered fuel into a high pressure gasification reactor
EP0350658A1 (en) * 1988-07-14 1990-01-17 Krupp Koppers GmbH Process for metering and controlling the mass flow of fuels in the partial oxidation of finely divided to powdery fuels
CN111272508A (en) * 2020-02-29 2020-06-12 天津大学 A device for packing dry particles into a Hull-Shore sheet by air
CN111272508B (en) * 2020-02-29 2024-05-17 天津大学 Device for loading dry particles into Hall-Shore thin plate by adopting pneumatic force
CN120505122A (en) * 2025-04-08 2025-08-19 徐州达希能源技术有限公司 Gasifying device for light oil hydrogen blending

Also Published As

Publication number Publication date
PL226791A1 (en) 1981-06-19
ZA805781B (en) 1981-09-30
CA1156697A (en) 1983-11-08
BR8006000A (en) 1981-03-31
DE2938369A1 (en) 1981-04-16
GB2059377B (en) 1983-12-07
IN153341B (en) 1984-07-07
AU6246680A (en) 1981-04-09
FR2466044A1 (en) 1981-03-27

Similar Documents

Publication Publication Date Title
US3001829A (en) Arrangement for the automatic adjustment of a distributor of pulverulent material under pressure
US3964793A (en) Continuous flow pneumatic conveyor system employing a fluidized bed column for the purposes of control and regulation
US1616547A (en) Handling dry pulverulent materials
EP0202796B1 (en) Apparatus and process for pneumatically conveying particulate material
SE8105598L (en) PLANT FOR PNEUMATIC TRANSPORT OF BIG GOODS
JPS6317650Y2 (en)
GB2059377A (en) A method of pneumatically conveying fine-grain fuel to a gasifier
US4355929A (en) Flow control device
US3599832A (en) Flow control of fluidized material
DE3062135D1 (en) Installation for conveying fine-grained material
JPH0711313A (en) Pulverized coal injection control method
ATE120240T1 (en) METHOD FOR PNEUMATIC AND DOSAGED INJECTION OF FINE-GRAINED SOLIDS INTO A CONTAINER UNDER VARIABLE PRESSURE.
EP0060137A1 (en) Conveying systems
ES486601A1 (en) Process and apparatus for the controlled pneumatic filling of a reactor, dependent upon the evacuated quantity.
US4029365A (en) Method for feeding powdered material
US3807602A (en) Method and apparatus for dispensing a fluidizable solid from a pressure vessel
US3085582A (en) Method and apparatus for controlling the bulk density of coal
US4669921A (en) Device for supplying a powdery product in gravimetrically metered amounts to a pneumatic line
US3249263A (en) Particulate material feeding
CA2118262C (en) Process for feeding a second stream of pulverulent materials into a pneumatic conveying line carrying a first controllable flow of pulverulent materials
CA1291192C (en) Material conveying apparatus
US4089563A (en) Apparatus for pneumatic conveyance of pulverulent or granular materials
US4483646A (en) Apparatus for distributing powdered particles
US3595437A (en) Particulate material feeding with power-sensing means
US3856459A (en) Heaters

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee