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Method used for producing synthesis gas from coke oven gas and coal gas

A coke oven gas and coal-to-gas technology, applied in hydrogen production, gas fuel, petroleum industry, etc., to achieve the effect of single process, controllable hydrogen-carbon ratio, and easy operation and management

Active Publication Date: 2015-10-28
SEDIN ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, it solves the shortcomings of carbon supplementation for chemical products produced by coke oven gas alone or hydrogen supplementation for chemical products produced by coal gas alone, and realizes the comprehensive utilization of coal gas and coke oven gas

Method used

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  • Method used for producing synthesis gas from coke oven gas and coal gas

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Experimental program
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Effect test

Embodiment 1

[0036] The coke oven gas produced by the top-loading coke oven (volume percentage composition is H 2 : 55%, CH 4 : 25%, CO+CO 2 :15%, N 2 : 5%) and 80% volume of coal-to-gas produced by pressurized gasification of crushed coal (volume percentage composition is CO: 49%, H 2 : 24%, CO 2 : 14%, CH 4 : 13%, H 2 S: 0.25%) into the gas holder, the molar flow ratio of coke oven gas and coal-based gas is 1.35:1, and another part of 20% of the volume of coal-based gas enters the sulfur-resistant water-vapour conversion equipped with Qingdao Lianxin QDB series catalyst, Airspeed is 2600h -1 , pressure 3.0MPa, temperature 360°C for sulfur-resistant transformation, the transformation gas and the mixed gas are combined and compressed to form a crude raw material gas with a hydrogen-carbon molar ratio of 2.28, and the crude raw material gas is washed and purified with low-temperature methanol after compression. Remove H at a pressure of 4.0MPa and a temperature of -45°C 2 S and CO ...

Embodiment 2

[0038] The coke oven gas (volume percentage composition as H 2 : 62%, CH 4 : 23%, CO+CO 2 :10%,N 2 : 5%) and about 90% of the volume of coal-to-gas produced by pressurized gasification of crushed coal (volume percentage composition is CO: 59%, H 2 : 20%, CO 2 : 12%, CH 4 : 9%, H 2 S: 0.35%) into the gas holder, the molar flow ratio of coke oven gas and coal-to-gas is 2.0:1, and another part of about 10% of the volume of coal-to-gas enters the QCS-01 catalyst produced by Qilu Petrochemical Research Institute. Sulfur-water-vapor shift at a space velocity of 3300h -1 , pressure 3.5MPa, temperature 380°C for sulfur-resistant transformation, the transformation gas and the mixed gas are combined and compressed to form a crude raw material gas with a hydrogen-carbon molar ratio of 2.36, and the crude raw material gas is purified by thermal alkali method after compression. Removal of H at a pressure of 1.4MPa and a temperature of 100°C 2 S and CO 2 and other impurities to obt...

Embodiment 3

[0040] The coke oven gas produced by the top-loading coke oven (volume percentage composition is H 2 : 60%, CH 4 : 24%, CO+CO 2 :12%,N 2 : 4%) and about 70% volume of coal-to-gas produced by Lurgi furnace gasification (volume percentage composition is CO: 50%, H 2 : 25%, CO 2 : 10%, CH 4 : 15%, H 2 S: 0.28%) into the gas holder, the molar flow ratio of coke oven gas and coal-based gas is 1.5:1, and another part of about 30% of the volume of coal-based gas enters the K8-11 type catalyst produced by the British ICI company. Sulfur-water vapor shift, at a space velocity of 5800h -1 , pressure 4.0MPa, temperature 370°C for sulfur-resistant shifting, the shifted gas and the mixed gas are combined and compressed to form a crude raw material gas with a hydrogen-carbon molar ratio of 3.11, and the crude raw material gas is purified by NHD after compression. 2.8MPa, H removal at 1°C 2 S and CO 2 and other impurities to obtain H 2 S content is less than 0.1ppm, CO 2 Feed gas ...

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Abstract

The invention discloses a method used for producing synthesis gas from coke oven gas and coal gas. According to the method, coke oven gas and a part of coal gas are delivered into a gasometer for mixing, and the other part of coal gas is subjected to sulfur-resistant water gas shift; obtained shifted gas and gas obtained via mixing in the gasometer are mixed, an obtained mixed gas is subjected to compression, purifying, and removing of impurities such as hydrogen sulfide; the obtained hydrogen sulfide is subjected to desulphurizing recovery, and removed CO2 gas is discharged; a crude raw material gas obtained via hydrogen sulfide removing is subjected to methane separation; an obtained methane-free gas is prepared into purified synthesis gas with qualified hydrogen-carbon ratio, and methane obtained via separation is prepared into liquefied natural gas products or compressed natural gas products. Comprehensive utilization of coke oven gas and coal gas is realized.

Description

technical field [0001] The invention belongs to a method for producing synthesis gas from coke oven gas and coal gas. technical background [0002] Synthesis gas is a kind of raw material gas with carbon monoxide and hydrogen as the main components, which is used as a chemical raw material. Syngas is widely used and is the most basic raw material for synthetic ammonia, natural gas, methanol, ethylene glycol, light olefins, synthetic oil and other products. Syngas has a wide range of raw materials. It is produced by the gasification of carbonaceous minerals such as solid fuels such as coal and charcoal. It can also be produced from light hydrocarbons such as natural gas and naphtha. It can also be produced from heavy oil through partial oxidation. Syngas preparation technology is basically monopolized by large foreign companies such as Shell, Sasol, BASF, and Mobil. [0003] The composition (volume %) of synthesis gas produced by various methods is very different: H2: 32-67...

Claims

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Application Information

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IPC IPC(8): C01B3/02C01B3/50C10L3/08
Inventor 张庆庚李晓曹会博崔晓曦
Owner SEDIN ENG
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