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WO2018177400A1 - Procédé de régulation de température et de pression pour un processus d'hydrogénation, son procédé de conception et son utilisation - Google Patents

Procédé de régulation de température et de pression pour un processus d'hydrogénation, son procédé de conception et son utilisation Download PDF

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Publication number
WO2018177400A1
WO2018177400A1 PCT/CN2018/081270 CN2018081270W WO2018177400A1 WO 2018177400 A1 WO2018177400 A1 WO 2018177400A1 CN 2018081270 W CN2018081270 W CN 2018081270W WO 2018177400 A1 WO2018177400 A1 WO 2018177400A1
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WIPO (PCT)
Prior art keywords
pressure
temperature
point
pressure relief
oil
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Ceased
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PCT/CN2018/081270
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English (en)
Chinese (zh)
Inventor
李苏安
邓清宇
王坤朋
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Catech Technology Co
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Catech Technology Co
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Filing date
Publication date
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Publication of WO2018177400A1 publication Critical patent/WO2018177400A1/fr
Anticipated expiration legal-status Critical
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G47/00—Cracking of hydrocarbon oils, in the presence of hydrogen or hydrogen- generating compounds, to obtain lower boiling fractions
    • C10G47/24—Cracking of hydrocarbon oils, in the presence of hydrogen or hydrogen- generating compounds, to obtain lower boiling fractions with moving solid particles
    • C10G47/26—Cracking of hydrocarbon oils, in the presence of hydrogen or hydrogen- generating compounds, to obtain lower boiling fractions with moving solid particles suspended in the oil, e.g. slurries
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
    • C10G2300/40—Characteristics of the process deviating from typical ways of processing
    • C10G2300/4006—Temperature
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
    • C10G2300/40—Characteristics of the process deviating from typical ways of processing
    • C10G2300/4012—Pressure

Definitions

  • the invention relates to a temperature and pressure control method for a hydrogenation process, a design method thereof and a use thereof, and belongs to the fields of petrochemical industry and coal chemical industry.
  • the slurry bed hydrogenation process can effectively utilize heavy oil resources and coal resources, remove impurities such as sulfur, nitrogen and heavy metals from raw materials, and improve the yield and quality of light oil, posing challenges to traditional refining technologies.
  • the slurry bed processing technology has become a research hotspot in the petrochemical industry in recent years.
  • the slurry bed hydrogenation reactor is the core equipment of the process and is related to the success of the entire plant operation.
  • the hydrogenation reaction is a strong exothermic reaction, the temperature rise in the reactor is high, and the slurry bed hydrogenation process is complicated, which makes the possibility of overheating and overpressure of the reactor greatly increased, so the reactor must be overtempered and super.
  • the pre-judgment of the working conditions is made, and safety measures to prevent overheating and overpressure of the reactor are made.
  • the improper operation of the heating furnace, the unstable feed of the reactor, the blockage of the outlet of the reactor, and the failure of the circulation operation in the slurry bed reactor may cause the reactor to fly or exceed the temperature.
  • Pressure once this condition occurs, the temperature and pressure of the reactor may continue to rise, which will aggravate the light oil cracking reaction, on the one hand, the light oil yield is lost, and on the other hand, the pressure in the reactor is sharply increased; In addition, the occurrence of polycondensation reaction will be aggravated, resulting in blockage of equipment. Once the above situation occurs, emergency treatment is required. The most effective method is to terminate the reaction: 1. Cut off the raw material and hydrogen supply; 2.
  • the invention provides a temperature and pressure control method for a hydrogenation process, a design method thereof and a use thereof, and is used for treating an emergency condition such as a flying temperature or an overpressure of a reactor.
  • the pressure and temperature in the reactor are reduced to a reasonable interval by selecting the appropriate pressure relief point and pressure relief rate.
  • a temperature and pressure control method for a hydrogenation process characterized in that a pressure relief point is provided on an outlet of a separation system after the reactor or a downstream equipment or pipeline connected thereto, and the pressure in the reaction system is gradually released by opening a pressure relief point
  • the temperature at the pressure relief point is 30 ° C to 220 ° C
  • two control points are set in order from low to high
  • the pressure reduction rate is 3-10 bar/min when the control point is exceeded;
  • the pressure rate is 10-25 bar/min
  • the control point is: temperature ⁇ 440 ° C and / or pressure ⁇ 19 MPa
  • control point 2 temperature ⁇ 460 ° C and / or pressure ⁇ 21 MPa.
  • control point is located at the outlet of the cryogenic high pressure separator.
  • control point is in communication with the reaction system.
  • the buck speed of the control point is controlled by a valve, and the valve is automatically and/or manually controlled.
  • the number of preferred pressure relief valves is ⁇ 1, which is used in parallel when more than one is used.
  • the preferred discharge medium is sent to the flare system.
  • the preferred temperature control system accepts other emergency status signals in addition to the monitoring point pressure signal.
  • the reaction material entering the apparatus is cut off after the control point is exceeded.
  • the use of the temperature and pressure control method of the foregoing hydrogenation process is characterized in that it is used in a heavy oil hydrogenation process or a coal-fired hydrotreated slurry bed hydrogenation process, and the heavy oil hydrogenation process refers to a residue oil and a catalytic oil slurry.
  • the heavy oil hydrogenation process refers to a residue oil and a catalytic oil slurry.
  • One or more combinations of deoiled asphalt and coal tar are processed as raw materials;
  • the oil coal slurry bed hydrogenation process refers to one of crude oil, residual oil, catalytic oil slurry, deoiled asphalt and coal tar Or a plurality of combinations are processed together with one or more of lignite and bituminous coal as raw materials, and the weight ratio of oil to coal ranges from 30 to 97:70-3.
  • the invention provides a set of emergency treatment measures such as over-temperature and over-pressure of the hydrogenation reaction system, and after the separator, especially after the cold high score, the pressure relief point is set, and the reactor is designed by designing a new idea of the pressure relief rate and the steps.
  • High-pressure equipment such as high-pressure separators can be made more stable during the pressure relief process.
  • the control point is gradually released, the pressure in the reaction system is gradually released by opening the control point, the reaction pressure is lowered, the reaction heat is taken out, the reaction speed is gradually reduced, and finally the reaction temperature is lowered to achieve a reasonable temperature drop rate.
  • the second is to ensure that the high-pressure equipment such as the reactor and the high-pressure separator, as well as the pipelines and valves, are not subjected to excessive pressure shock during the pressure relief process.
  • the role of the protection equipment; the third is the cold high-level discharge medium is cold and clean gas phase material, can be directly discharged to the flare system, without additional special flare system, reducing operational risks and investment.
  • the control point is in communication with the reaction system, ie the pressure detected by the control point can truly reflect the pressure within the reactor.
  • Figure 1 is a schematic view of a reactor according to an embodiment of the present invention, and the numbers in the figures are listed as follows:
  • FIG. 1 describes a pressure relief process for a hydrogen coal slurry bed (with internal circulation structure) hydrogenation process, including a connection mode as shown in FIG. Reactor 15, hot high score 1, warm high score 2, cold high score 3, hot low score 4, warm low score 5, cold low score 6, the materials indicated in the various stages in the figure are reaction product 7, cold oil 8.
  • Pressure relief line 9 cold high fraction gas phase product 10, cold low fraction gas phase product 11, cold low fraction liquid phase product 12, wastewater 13, warm low oil phase product 14.
  • the pressure relief point is set at the cold high score 3 outlet, which is valve A and valve B, which are arranged in parallel.
  • the valve is a two-position valve with a pressure relief rate of 6 bar/min and 15 bar/min respectively.
  • thermometers are set, in accordance with the method of taking two Read temperature, when the operating temperature exceeds 455 °C, start the pressure relief valve A, the pressure relief speed is 6bar / min, if the temperature in the reactor 1 continues to rise, exceeds 465 ° C, then open the valve B, the total pressure relief rate At 21 bar/min, two pressure relief valves are used at the same time.
  • the pressure signal of the pressure relief valve is taken from the front of the valve, where the pressure difference between the pressure and the reactor is fixed. So the pressure here can actually react to the pressure inside the reactor.
  • the operating pressure does not exceed 20 MPa.
  • three pressure gauges are set, and the pressure is read in accordance with the method of three-take two.
  • the pressure relief valve A is opened and the pressure relief speed is 6 bar/min. If the pressure in the reactor continues to increase, exceeding 22 MPa, the valve B is also opened, and the total pressure relief speed is 21 bar/min, and the two pressure relief valves are used at the same time.
  • the use of the pressure relief method of the present invention has achieved good application effect in the coal-fired slurry bed hydrogenation process, and the operation is simple, and the degree of automation is high, and the production is improved. safety.

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  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)

Abstract

L'invention concerne un procédé de régulation de température et de pression pour un processus d'hydrogénation, son procédé de conception et son utilisation. Un point de décompression est disposé au niveau d'une sortie d'un système de séparation après un réacteur, ou au niveau d'un dispositif ou d'un pipeline en aval connecté à celui-ci, la température au point de décompression étant de 30 à 220 °C. Deux points de commande sont agencés et, lorsque le point de commande I est dépassé, c'est-à-dire une température de 440 °C/une pression de 19 MPa, le taux de réduction de pression est de 3 à 10 bar/min ; et lorsque le point de commande II est dépassé, c'est-à-dire une température de 460 °C/une pression de 21 MPa, le taux de réduction de pression est de 10 à 25 bar/min. Grâce à ce procédé de commande, un dispositif haute pression peut être rendu plus stable pendant un processus de décompression.
PCT/CN2018/081270 2017-03-31 2018-03-30 Procédé de régulation de température et de pression pour un processus d'hydrogénation, son procédé de conception et son utilisation Ceased WO2018177400A1 (fr)

Applications Claiming Priority (2)

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CN201710211080.9 2017-03-31
CN201710211080.9A CN106957675B (zh) 2017-03-31 2017-03-31 一种加氢工艺的温度及压力控制方法及其设计方法和用途

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WO2018177400A1 true WO2018177400A1 (fr) 2018-10-04

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN110669548A (zh) * 2019-09-02 2020-01-10 国家能源集团宁夏煤业有限责任公司 加氢裂化反应器连锁保护控制方法和控制系统

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106957675B (zh) * 2017-03-31 2018-03-06 北京中科诚毅科技发展有限公司 一种加氢工艺的温度及压力控制方法及其设计方法和用途
CN110215742A (zh) * 2018-03-01 2019-09-10 中石化广州工程有限公司 一种加氢装置脱氯的方法
US10946358B2 (en) 2018-08-16 2021-03-16 Beijing Aerospace Propulsion Institute Skid-mounted depressurizing system
CN110292899B (zh) * 2019-04-19 2021-06-08 东南大学 高温微波反应釜联用装置及反应方法
CN113019038A (zh) * 2021-03-10 2021-06-25 北京中科诚毅科技发展有限公司 一种加氢分离工艺及其设计方法和用途

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CN103484153A (zh) * 2012-06-13 2014-01-01 中国石油天然气股份有限公司 一种利用反应压力抑制加氢裂化飞温的方法
CN104449824A (zh) * 2014-12-05 2015-03-25 北京石油化工工程有限公司 一种悬浮床加氢裂化反应产物分离减压组合系统
CN204735197U (zh) * 2015-06-02 2015-11-04 沧州华海炼油化工有限责任公司 一种加氢压力控制装置
CN105273747A (zh) * 2015-11-18 2016-01-27 北京中科诚毅科技发展有限公司 一种浆态床加氢反应器的控温措施及其设计方法和用途
CN106957675A (zh) * 2017-03-31 2017-07-18 北京中科诚毅科技发展有限公司 一种加氢工艺的温度及压力控制方法及其设计方法和用途

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GB1322701A (en) * 1969-04-01 1973-07-11 Waddleton N Apparatus for converting liquid fatty nitriles to amines
CN103484153A (zh) * 2012-06-13 2014-01-01 中国石油天然气股份有限公司 一种利用反应压力抑制加氢裂化飞温的方法
CN104449824A (zh) * 2014-12-05 2015-03-25 北京石油化工工程有限公司 一种悬浮床加氢裂化反应产物分离减压组合系统
CN204735197U (zh) * 2015-06-02 2015-11-04 沧州华海炼油化工有限责任公司 一种加氢压力控制装置
CN105273747A (zh) * 2015-11-18 2016-01-27 北京中科诚毅科技发展有限公司 一种浆态床加氢反应器的控温措施及其设计方法和用途
CN106957675A (zh) * 2017-03-31 2017-07-18 北京中科诚毅科技发展有限公司 一种加氢工艺的温度及压力控制方法及其设计方法和用途

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110669548A (zh) * 2019-09-02 2020-01-10 国家能源集团宁夏煤业有限责任公司 加氢裂化反应器连锁保护控制方法和控制系统

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