Dry-wet combination process refining and purifying technology of coke oven gas
A combination of coke oven gas and dry-wet technology, which is applied in combustible gas purification, combustible gas purification/transformation, petroleum industry, etc., can solve the problems of insufficient purification effect, achieve easy implementation, not cumbersome process, and ensure purification effect of effect
Inactive Publication Date: 2012-12-12
上海梅山工业民用工程设计研究院有限公司
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Although the wet purification method has low operating costs, it cannot achieve the purification effect
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[0034] The present invention will be further described below in combination with specific embodiments.
[0035] For users who are far away from coking plants and need refined coke oven gas, a deep refined gas purification process with simple process, low investment, small footprint, and convenient operation and maintenance is used in combination with the advantages and disadvantages of dry and wet purification processes.
[0036] First, in the wet process section, the pre-purified coke oven gas from the coking plant first enters the packed oil washing naphthalene tower 1, and the gas is sprayed and washed with circulating washing oil. In order to keep the circulating oil temperature 3-5°C higher than the gas temperature, use 0.6MPa saturated steam to heat the washing oil through the heat exchanger 2. The naphthalene washing operation of the washing oil reduces the naphthalene content from 400mg / m3 to below 80mg / m3. In order to maintain the absorption activity of the washing oi...
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The invention relates to a dry-wet combination process refining and purifying technology of coke oven gas. The technology comprises a wet-process section and a dry-process section, wherein the wet-process section comprises the following steps of: enabling the coke oven gas after preliminary purification to enter an oil-washing naphthalene tower (1), and enabling the coke oven gas to flow out of the oil-washing naphthalene tower (1) and enter an electric tar precipitator (3) to precipitate most of residual oil-washing fog and tar fog; and the dry-process section comprises the following steps of: enabling the coke oven gas to flow out of the electric tar precipitator (3) and enter an oil removal and naphthalene removal device filled with a solid adsorbent, enabling the coke oven gas to flow out of the oil removal and naphthalene removal device and further flow into a desulfurization device filled with a solid desulfurizing agent and enabling the coke oven gas to form refined and purified gas after flowing out of the desulfurization device. According to the technology disclosed by the invention, a purifying effect is ensured, and the technology is conductive to implementation; the burden of the dry-process section is reduced, and the burden on regeneration of a filler of the adsorbent and replacement of the filler can be further reduced; the operation cost is reduced; and the cost is reduced and the efficiency is simultaneously considered.
Description
technical field [0001] The invention relates to a refining and purification process of coke oven gas, in particular to a refining and purification process of coke oven gas combined with dry and wet methods. Background technique [0002] Coke oven gas is a by-product gas produced in coke oven coking. Due to factors such as coking coal, coking process and operation of gas recovery equipment, the impurities contained in coke oven gas are also different. Coke oven gas is an important gas raw material in metallurgy, power, chemical synthesis and other industrial and civil fields. The purpose of the gas purification process is to remove harmful impurities in coke oven gas, mainly hydrogen sulfide, cyanide, benzene, naphthalene, etc., to meet the needs of different users. [0003] Generally, coking plants are equipped with a gas recovery process to remove impurities in coke oven gas and recycle them. After the crude gas produced by the coke oven is condensed and blasted, tar rem...
Claims
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Login to View More IPC IPC(8): C10K1/00C10K1/32C10K1/20
Inventor 舒纪文方文新陈泉明雷江伟李霞裴占宁苏琼
Owner 上海梅山工业民用工程设计研究院有限公司