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Method for synthesizing ethylene glycol from coke oven gas and converter and/or blast furnace gas to co-produce lng

A technology for coke oven gas and blast furnace gas, which is applied in the field of synthesizing ethylene glycol and co-producing LNG, can solve the problems that effective components cannot be fully utilized, can only be used as fuel, environmental pollution, etc., and achieve wide application and development prospects, absorption High capacity and the effect of reducing waste of resources

Active Publication Date: 2021-10-08
戴乐亭 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, converter gas and blast furnace gas are rich in carbon and low in hydrogen. At present, only a single gas is used to produce a certain product in the industry, which will lead to the inability to fully utilize some effective components in the gas, poor regulation, and contain some effective components. Part of the exhaust gas needs to find another way or can only be used as fuel, resulting in energy waste and environmental pollution

Method used

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  • Method for synthesizing ethylene glycol from coke oven gas and converter and/or blast furnace gas to co-produce lng
  • Method for synthesizing ethylene glycol from coke oven gas and converter and/or blast furnace gas to co-produce lng
  • Method for synthesizing ethylene glycol from coke oven gas and converter and/or blast furnace gas to co-produce lng

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Embodiment 1

[0196] A method for synthesizing ethylene glycol from coke oven gas and converter and / or blast furnace gas to co-produce LNG,

[0197] Including the following steps:

[0198] S0), primary purification of coke oven gas and converter and / or blast furnace gas

[0199] The flow rate of coke oven gas before primary purification is 83052Nm 3 / h, the pressure is 0.005Mpa, and the temperature is 20°C; among the active ingredients, the volume fraction of methane is 20.8%, the volume fraction of hydrogen is 60.31%, the volume fraction of carbon monoxide is 8.9%, and the volume fraction of oxygen is 0.82% %, the volume fraction of carbon dioxide is 2.58%, and the content of tar and dust is 0.015g / Nm 3 , the content of hydrogen sulfide is 50mg / Nm 3 , the content of other sulfides is 155.2mg / Nm 3 ; The flow rate of converter and / or blast furnace gas before initial purification is 29000Nm 3 / h, the pressure is 0.005Mpa, and the temperature is 20°C; among the active ingredients, the vol...

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Abstract

The invention relates to a method for synthesizing ethylene glycol and co-producing LNG by using coke oven gas, converter gas and blast furnace gas, which belongs to the field of chemical technology. Compression treatment, and then rough desulfurization; remove impurities from coke oven gas after desulfurization treatment; compress, finely desulfurize and remove O 2 ; Then the gas passes through the amine method to CO 2 The gas is removed; finally, the product LNG is separated by cryogenic cooling, and H is separated at the same time. 2 and rich CO, then for H 2 Purify; secondly, dedust and detar the converter and blast furnace gas; perform compression and impurity removal, and desulfurize and remove O 2 , then CO on the gas 2 Removal treatment; combine the purified gas with the CO-enriched gas to purify the CO gas, and finally synthesize the purified CO through an esterification-carbonylation cycle to produce DMO, and DMO and purified hydrogen to produce ethylene glycol; the first application of the present invention in the synthesis of ethylene glycol technology.

Description

technical field [0001] The invention relates to the field of gas purification, in particular to a method and device for synthesizing ethylene glycol with coke oven gas and converter and / or blast furnace gas to co-produce LNG. Background technique [0002] Coke oven gas, also known as coke oven gas, refers to a combustible gas produced while coke and tar products are produced after coking coal is subjected to high-temperature dry distillation in a coke oven. It is a by-product of the coking industry. Coke oven gas has a high calorific value and is usually used as fuel for high-temperature industrial furnaces or city gas. [0003] With the gradual improvement of environmental protection requirements, the new coking industry access standard has clearly stipulated that the utilization rate of coke oven gas should exceed 98%. Therefore, many coke oven gas utilization technologies have been developed, such as coke oven gas to liquefied natural gas, coke oven gas to methanol, etc....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C29/149C07C31/20C10L3/10C10L3/08
CPCC07C29/149C07C67/36C10L3/08C10L3/10C07C31/202C07C69/36
Inventor 杨勇戴乐亭汪武平侯俊平
Owner 戴乐亭
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