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Hydrogen-consuming apparatus low gas optimization utilization method and hydrogen-consuming apparatus low gas optimization utilization system

A low-separation gas and hydrogen production device technology, applied in separation methods, chemical instruments and methods, dispersed particle filtration, etc., can solve the problems of recovery efficiency limitation, hydrogen discharge into the gas system, etc., to reduce load and fuel consumption, prolong The operation cycle and the effect of low investment

Active Publication Date: 2019-06-25
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the utilization of low-separation gas in hydrogen-consuming devices mainly includes the following situations: (1) The low-separation gas of hydrogen-consuming devices is desulfurized and directly discharged to the gas pipeline network as fuel for refineries; (2) The low-separation gas of hydrogen-consuming devices is desulfurized Send it to a hydrogen recovery device for hydrogen enrichment, such as a pressure swing adsorption device (PSA) and a membrane separation device. This method can recover a large amount of hydrogen in the low fraction gas, but due to the limitation of the recovery efficiency of the hydrogen recovery device, some hydrogen will also be produced. Discharge into the gas system along with PSA desorption gas and membrane separation retentate gas

Method used

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Embodiment 1

[0044] The embodiment is to conduct a test on the delayed coking experimental device according to the flow of the method for optimizing the utilization of low-separation gas of the hydrogen consumption device provided by the present invention, wherein the low-separation gas of the hydrogen consumption device is injected into the heating furnace for radiation through the steam injection point of the coking heating furnace Section, operating conditions and product distribution are shown in Table 3 (the amount of low fraction gas has been deducted from the product yield), it can be seen that the yields of coke and liquid hydrocarbons are 23.3% and 69.2% respectively, and the H 2 The content is 32.3%.

Embodiment 2

[0046] It is basically the same as the embodiment, the difference is that when the coking raw material and the low-separation gas of the hydrogen-consuming device start the coking reaction in the coke tower, another low-separation gas of the hydrogen-consuming device is passed into the coke tower, and the coking reaction The end is to stop feeding, the low-separation gas is injected from the coke tower cylinder at a distance of 4m from the oil and gas outlet at the top of the coke tower, and the injection port is uniformly distributed at three points, and the injection port and the coke tower shell are at 45 degrees . The operating conditions and product distribution are shown in Table 3 (the amount of low fraction gas has been deducted from the product yield). It can be seen that the yields of coke and liquid hydrocarbons are 23.2% and 69.4% respectively, and the H in coking dry gas 2 The content is 32.4%.

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Abstract

The invention provides a hydrogen-consuming apparatus low gas optimization utilization method and a hydrogen-consuming apparatus low gas optimization utilization system. According to the method, hydrogen-consuming apparatus low gas is conveyed to the coking heating furnace in a delayed coking device; the heated coking raw material and the low gas enter a coke tower, and are subjected to a reaction; the high-temperature oil gas obtained by the reaction is separated to obtain coking rich gas, and the coking rich gas enters an absorption stabilization system, and is separated to obtain coking drygas, coking gasoline, coking diesel oil and coking wax oil; and the obtained coking dry gas is desulfurized and filtered so as to be used as a hydrogen producing raw material. The invention further provides a hydrogen-consuming apparatus low gas optimization utilization system. With the method and the system of the present invention, the hydrogen-consuming apparatus low gas is subjected to optimization utilization by using the existing coking device, the novel efficient utilization method is provided for the hydrogen-consuming apparatus low gas, and the advantages of low investment and low energy consumption are achieved.

Description

technical field [0001] The invention belongs to the field of oil refining and chemical industry, and relates to a method and system for utilizing hydrogen resources, in particular to a method and system for optimizing the utilization of hydrogen resources in a hydrogen consumption device. Background technique [0002] With the trend of heavy and inferior processed crude oil becoming more and more intensified and the requirements for product quality upgrading strengthened, the demand for hydrogen in refineries is increasing. Hydrogen has become the second largest cost of raw materials in refineries after crude oil. elements. Hydrogen resource optimization utilization technology can improve the level of resource optimization and utilization of hydrogen-containing materials in enterprises, and is an important way for enterprises to reduce the waste of hydrogen resources and improve economic benefits. [0003] All kinds of hydrogen consumption devices are the main users of hydr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/02B01D53/50B01D46/10
Inventor 薄德臣王阳峰张英张龙张胜中孟凡忠范得权
Owner CHINA PETROLEUM & CHEM CORP
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