A process device and process method for reactive desulfurization of hydrogen sulfide and sulfur dioxide

Abstract

A process device and process method for reactive desulfurization of hydrogen sulfide and sulfur dioxide, including a reactor and a separator. Gas inlet pipes, all gas inlet pipes are arranged on the same level, each gas inlet pipe is tangent to the wall of the reactor shell and connected to the cavity of the reaction zone, forming a snail shell shape; the settling zone is connected to the separator, and the separator’s The other end is connected to the top of the tail gas absorption zone of the reactor. The hydrogen sulfide and sulfur dioxide desulfurization reaction is carried out by using the above-mentioned device, and the reaction solution includes water and at least one organic basic compound that can dissolve in water, so that the pH value of the solution is ≥ 7.2. The device and method of the present invention realize the effect of self-stirring of the solution in the reactor, which can increase the dissolution rate and reaction rate of the gas in the solvent, the response time of hydrogen sulfide and sulfur dioxide reaction is below 15s, the reaction conditions are mild, and the obtained sulfur does not need Refined, high purity, simple equipment, easy processing, low investment, safe operation.

Description

technical field [0001] The invention relates to a process device for reaction desulfurization of hydrogen sulfide and sulfur dioxide, and a desulfurization method using the process device, belonging to the field of industrial production or industrial waste gas purification. Background technique [0002] Due to the development of our country's economy, the demand for crude oil continues to increase, and domestic crude oil is no longer enough to meet national needs, so imported crude oil is continuously being imported into China. From January to December 2016, China imported 381.01 million tons of crude oil, an increase of 13.6% compared with the same period last year. With the increase of my country's imported crude oil year by year, the proportion of high-sulfur crude oil is increasing. For this reason, major oil refining companies have developed a series of high-sulfur crude oil processing technology. During cracking, catalytic cracking and other processing processes, a lar...

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Problems solved by technology

[0015] In the above disclosed patents, H 2 S and SO 2 The pressure, temperature and pH value required for the reaction in pure water are very harsh. The reaction in an organic solvent or aqueous solution requires the addition of a buffer solution or catalyst to keep the organic solvent or aqueous solution acidic. The stronger the acidity (the lower the pH value) ) is more conducive to the reaction. During the operation of the device, the buffer solution or catalyst needs to be regularly replenished to maintain the acidic conditions required for the reaction, so the operating cost of the device increases; because the obtained liquid phase sulfur solution contains buffer solution or catalyst, the sulfur product The purity cannot meet the market demand, so sulfur refining equipment is needed to improve the purity of sulfur products

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