Method for producing semi-reinforcing hydrocarbon black, methanol, liquid ammonia with coke oven gas

A technology for semi-reinforcing carbon black and coke oven gas, which is applied in the preparation/separation of ammonia, chemical instruments and methods, preparation of organic compounds, etc., can solve the problems of environmental pollution, waste of precious resources, etc. Short process route and obvious economic benefits

Active Publication Date: 2011-01-26
QUJING ZHONGYI FINE CHEMICAL INDUSTRY CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The gas is ignited and released into the atmosphere, which not only wastes a lot of precious resources but also seriously pollutes the environment

Method used

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  • Method for producing semi-reinforcing hydrocarbon black, methanol, liquid ammonia with coke oven gas
  • Method for producing semi-reinforcing hydrocarbon black, methanol, liquid ammonia with coke oven gas
  • Method for producing semi-reinforcing hydrocarbon black, methanol, liquid ammonia with coke oven gas

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Effect test

Embodiment 1

[0013] As shown in Figure 3, the pressure of the coke oven gas is about 2.45MPa (gauge pressure) after desulfurization, and the shift gas with a temperature of 40°C comes from the outside of the device and enters the adsorption tower from the bottom of the tower. Under the selective adsorption of various adsorbents (multiple adsorbents are included in the existing adsorption equipment), the methane in it is adsorbed, and the unadsorbed purified gas flows out from the top of the tower as methanol synthesis gas and is sent to the combined compression machine. Its methane content is less than 1%, and its pressure is 2.40MPa. Methane gas with a concentration of not less than 70% enters the carbon black reaction furnace, and the air with a flow rate of 20m / s is used as the oxidant. The ratio of methane gas to air is 1:2~3, and carbon black is generated in the carbon black reaction furnace. The reaction temperature is 1100℃~1300℃, after the reaction, the carbon black gas passes thr...

Embodiment 2

[0015] As shown in Figure 4, the coke oven gas is pressurized at about 2.45MPa (gauge pressure) after desulfurization, and the shift gas with a temperature of 40°C comes from the outside of the device and enters the adsorption tower from the bottom of the tower. Under the selective adsorption of various adsorbents, the methane in it is adsorbed, and the unadsorbed purified gas flows out from the top of the tower as methanol synthesis gas and is sent to the combined compressor. Its methane content is less than 1%, and its pressure is 2.40MPa. Methane gas with a concentration of not less than 70% enters the carbon black reaction furnace, and oxygen with a purity of 93% is added at a flow rate of 20m / s as an oxidant. The ratio of methane gas to oxygen is 1:0.5, and carbon black is generated in the carbon black reaction furnace. The reaction temperature is 1100℃~1300℃. After the reaction, the carbon black gas passes through the bag filter to obtain carbon black and carbon black ta...

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Abstract

The invention relates to a production method for producing semi-reinforcing carbon black, methanol and liquid ammonia with coke oven gas, which comprises the followings steps: the desulfurization of coke oven gas, demethanization realized through pressure swing absorption, the synthesis and rectification of methanol, CO conversion of carbon black exhaust gas and exhaust gas from methanol plant, the synthesis of decarburization and liquid ammonia; the method is characterized in that the coke oven gas is demethanized through pressure swing absorption; methane gas enters into a carbon black reaction furnace; air or oxygen is fed in as oxidizer; carbon block is generated in the reaction furnace; the semi-reinforcing carbon black product is obtained after the carbon block is granulated by a bag filter; the carbon black exhaust gas can enter into a methanol synthesis system or a liquid ammonia production system. The demethanized gas receives methanol synthesis treatment; H2 of the exhaust gas from methanol plant after methanol synthesis is extracted by a pressure swing absorber, and the residual gas after hydrogen extraction enters into a synthetic ammonia system to prepare liquid ammonia. The production method is characterized by short process route, low investment, small pollution, quick effect and the like, and can reasonably utilize the resources.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, in particular to a method for producing semi-reinforcing carbon black, methanol and liquid ammonia by using coke oven gas. Background technique [0002] my country is short of oil, gas, and rich in coal resources. It is an inevitable trend to develop a coal-based chemical industry, and it is a basic feature of my country's chemical industry. According to calculations, based on the annual production of 140 million tons of coke in the country, coke oven gas can be produced as a by-product of 42 billion Nm 3 , due to China's coking industry focusing on coke production and ignoring comprehensive utilization, a large amount of coke oven gas is directly burned and emptied-commonly known as "lighting sky lanterns". Coke oven gas 140 - More than 100 million Nm 3 , which is equivalent to the designed annual gas transmission volume of the "West-to-East Gas Pipeline". The gas is ignited and re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/50C01B3/50C01C1/04C07C31/04C07C29/151
Inventor 罗国林史志学罗龙李桂成熊柱松陈文正
Owner QUJING ZHONGYI FINE CHEMICAL INDUSTRY CO LTD
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