Method and device for treating gas containing hydrogen sulfide

A hydrogen sulfide and gas technology, applied in chemical instruments and methods, separation methods, ammonium sulfide/polysulfide, etc., can solve the problems of expensive desulfurization catalysts, solid waste generation, low purity of sulfur products, etc., and achieve increased crystal adhesion. Area, reduce energy consumption, the effect of large surface area

Active Publication Date: 2019-01-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This technology has problems such as expensive desulfurization catalyst, sulfur foam entrainment catalyst, low purity of sulfur product, and solid waste generation.

Method used

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  • Method and device for treating gas containing hydrogen sulfide
  • Method and device for treating gas containing hydrogen sulfide
  • Method and device for treating gas containing hydrogen sulfide

Examples

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Embodiment 1

[0057] use as figure 1 The shown treatment method and device use acid gas as raw material for treatment. CO in acid gas 2 The volume fraction is 94%, H 2 The volume fraction of S is 5%, and the volume fraction of hydrocarbons is 1%. In embodiment 1, crystallization tower structure is as figure 2 shown. The acid gas is first cooled by 20°C through the cooler, and then mixed evenly with ammonia gas in the mixer. The feed molar ratio of acid gas and ammonia gas is 2:3. The mixed stream enters the crystallization tower to obtain gas phase stream and ammonium hydrogen sulfide crystallization. The ammonium hydrosulfide crystals are deposited on the crystallization column in the crystallization tower. The results of material analysis are shown in Table 1.

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Abstract

The invention discloses a device for treating hydrogen sulfide-containing gas. The device comprises a cooler, a mixer and a crystallizing tower, wherein a hydrogen sulfide-containing gas feeding pipeline is connected with the inlet of the cooler; the outlet of the cooler is connected with the inlet of the mixer; the inlet of the mixer is connected with an ammonia gas feeding pipeline; the outlet of the mixer is connected with the gas inlet of the crystallizing tower. The invention further discloses a method for treating the hydrogen sulfide-containing gas. According to the method and the device for treating the hydrogen sulfide-containing gas, separation of hydrogen sulfide from the hydrogen sulfide-containing gas is realized based on the characteristic that ammonia gas and hydrogen sulfide generate gas-phase reaction to produce sulfur ammonium hydrogen, and a sulfur ammonium hydrogen product is obtained; the method is simple in process, low in energy consumption, and particularly applicable to separation of refinery acid gas; the crystallizing tower has the advantages of easiness in falling of crystal substances, large surface area of attachable crystal substances and the like.

Description

technical field [0001] The invention relates to a method and device for treating gas containing hydrogen sulfide, in particular to a method and device for treating gas containing hydrogen sulfide by means of crystallization. Background technique [0002] Crystallization, the process by which solid matter emerges as crystals from a vapor, solution or melt, has been used thousands of years ago to extract table salt from seawater. According to statistics, in modern society, about 2 / 3 of the bulk chemical products are solid products, especially in the pharmaceutical industry, 85% of the products are solid products, and the production process of these solid products is inseparable from crystallization operate. The traditional industrial crystallization research field can generally be divided into four categories, namely solution crystallization, melt crystallization, precipitation crystallization and sublimation crystallization. [0003] Crystallization equipment is an importan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/76B01D53/52C01C1/20
Inventor 陈新彭德强孟凡飞王璐瑶刘杰王岩
Owner CHINA PETROLEUM & CHEM CORP
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