A desulfurizer for quickly removing carbonyl sulfide in tail gas

Abstract

The invention relates to the technical field of carbonyl sulfide removing, in particular to a novel sulfur removing agent capable of rapidly removing carbonyl sulfide from tail gas. The removing agentcomprises amine with extremely strong alkalinity, activating agent, cosolvent and volatile organic solvent, and the removing agent is a special sulfur removing agent capable of rapidly removing the carbonyl sulfide from the tail gas and is prepared by the above materials according to a certain proportioning . Compared with a traditional sulphur removing agent, the novel sulphur removing agent isspecially used for removing the carbonyl sulfide, the removing efficiency is high, the novel sulphur removing agent is free from toxin and harmless, industrial production can be achieved, by means ofthe novel sulphur removing agent, the removing rate of methanthiol and ethanethiol can reach 99.5% or above, the removing problem of carbonyl sulfide can be solved, the carbonyl sulfide removing efficiency is high, the removing speed is fast, the tail gas can be purified to an extent that the total sulphur residue rate is lower than 20 ppm, which is higher than the national discharging standard ofnot more than 35 ppm, the converting cost of existing gas field is greatly saved and the operating benefit is improved.

Description

technical field [0001] The invention relates to the technical field of removing carboxyl sulfide, in particular to a desulfurizer for quickly removing carbonyl sulfide in tail gas. Background technique [0002] Organic sulfur is a kind of water-insoluble organic matter. In the exploitation of oil and natural gas, on the one hand, organic sulfur is extremely toxic and has a foul smell; on the other hand, in the separation and treatment of natural gas, organic sulfur is generally insoluble in water and difficult to remove. , affecting the separation and treatment of natural gas and meeting the standards; with the continuous improvement of the national total sulfur emission standards, the removal of organic sulfur has become a difficult problem in natural gas purification. To meet the national total sulfur emission standards, most natural gas containing organic sulfur Purification plants are facing enormous pressure to upgrade. [0003] With the continuous exploration and deve...

AI Technical Summary

Problems solved by technology

When using hindered amine to remove carbonyl sulfide, when the proportion of hindered amine added reaches 30%, the removal rate of carbonyl sulfide can barely reach 60%, if the removal rate of carboxyl sulfide reaches 80% or even higher, the steric hindrance The amine content must be increased to more than 40%, and the carbonyl sulfide content in natural gas is generally tens to hundreds of ppm, occasionally thousands of ppm, and the price of hindered amine is relatively high. A large number of high-priced hindered amine reagents are used in the process, resulting in extremely poor cost performance

However, when carbonyl sulfide is removed by hydrogenation process, additional hydrogenation process equipment needs to be added, and the hydrogenation process has strict technical requirements, which will greatly increase the investment and operating costs of natural gas purification plants, and eventually lead to high cost of natural gas desulfurization process The range is improved, but the practicability is not good

Especially with the newly issued national tail gas sulfur content standards, most natural gas purification plants are under the pressure of upgrading and transformation, and the removal of a small amount of carbonyl sulfide will greatly increase the cost of transformation