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Beijing Beida Pioneer Technology Co., Ltd
Converter gas recycling and utilization
NegotiableUpdate on 05/16
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Overview
The technology of recycling converter gas can separate CO and H2 from the tail gas of steel plants (blast furnace gas, converter gas, and coke oven gas) at low cost and on a large scale, which can be used to produce high value-added chemicals such as ethylene glycol, ethanol, formic acid, oxalic acid, etc; Alternatively, the combustion heat value of steel plant exhaust can be increased by enriching CO in the exhaust gas, replacing or reducing the use of other fuels such as natural gas.
Product Details
Converter gas recycling and utilizationTechnical Principles:
At present, the utilization of exhaust gas from steel mills mainly relies on combustion heating and combustion power generation, with less than ideal energy utilization efficiency and the generation of a large amount of greenhouse gas CO2. Due to the fact that CO and H2 in the tail gas of steel mills are important chemical raw materials for carbonylation synthesis and have much lower acquisition costs than coal gasification processes, using steel mill tail gas to produce chemicals has significant cost advantages compared to conventional coal chemical processes, and is also an effective way to efficiently utilize steel mill tail gas.
Converter gas recycling and utilization-Tempered steel co production case:
1. Converter gas to produce formic acid and oxalic acid
Customer: Shandong Asde Technology Co., Ltd
This project utilizes 45000Nm3/h converter gas from Shiheng Special Steel to purify and separate 18200Nm3/hCO (concentration 98.5%), which is then used to produce 200000 tons of formic acid and 50000 tons of oxalic acid annually.
economic benefits
1) Product cost: Compared to coal gasification process, the product cost of this project is reduced by about 30% to 60%.
2) Investment return: The payback period for this project is approximately 3-4 years.
social benefits
This project combines steel plant gas with chemical industry to produce high value-added chemicals, which is in line with the national policy of promoting circular economy development and can achieve an average annual reduction of 320000 tons of CO2 emissions.
2. Utilization of blast furnace gas to increase calorific value
Customer: Hengyang Hualing Steel Pipe Co., Ltd
This project will purify and separate 67000Nm3/h blast furnace gas (700 kcal) from Hualing Steel Pipe to produce 18000Nm3/h high calorific value gas (CO concentration of 70%, 2100 kcal), replacing 3500Nm3/h natural gas for use in circular heating furnaces.
economic benefits
1) Product cost: The low calorific value blast furnace gas that was originally released is purified and separated to become high calorific value gas, replacing natural gas with equal calorific value for combustion. Especially in areas where natural gas is scarce in winter, it can solve the problem of energy shortage.
2) Investment return: The investment payback period for this project is 4-5 years.
social benefits
The project reduces the annual emission of blast furnace gas by 536 million cubic meters and the annual CO2 emissions by about 70000 tons.
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