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Deeply purifying method for synthetic gas

A deep purification and synthesis gas technology, applied in chemical instruments and methods, hydrogen/synthesis gas production, inorganic chemistry, etc., can solve problems such as catalyst poisoning

Active Publication Date: 2011-02-16
HAISO TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] (2) Other poisons such as chlorine, metal carbonyl compounds, oxygen, and arsenic can also seriously poison the catalyst

Method used

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  • Deeply purifying method for synthetic gas
  • Deeply purifying method for synthetic gas
  • Deeply purifying method for synthetic gas

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Embodiment 1

[0052] Shaanxi Jinchao Investment Co., Ltd. has adopted the deep purification process flow of the present invention on the coal-based clean fuel oil 10,000-ton industrial trial device: crude synthesis gas from wet tannin extract desulfurization, gas volume 1200Nm 3 / h, gas temperature 40~100℃, pressure 0.7~1.0MPa, H 2 S≤150mg / m 3 , Chlorine 2 2000-4000ppm, after fine desulfurization process at room temperature, the total sulfur T S It can be removed to 0.1-1ppm, and then through the deep purification tower 1 and tower 2 of the present invention (the two towers are filled with EH-5 deep hydrolysis catalyst, HTS-1, HTS-2 deep fine desulfurizer and ET-3A protective agent ) and tower 3 (loaded with CTO-1 deoxidizer), the deeply purified and refined synthesis gas is removed from the Fischer-Tropsch synthesis section. In the deeply purified and refined synthesis gas, H 2 S 3ppb, COS 3ppb, CS 2 5ppb, Chlorine 8ppb, O 2 0.8ppm. There is still 5ppb CS in the refined syngas 2 ...

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Abstract

The invention provides a method for deeply purifying the synthetic gas made from coal, coke, heavy oil, residual oil or natural gas. The method is synthetic gas containing 10ppb-10ppm of (H2S+COS), 10ppb- 5ppm of chlorine, 20ppb-5ppm of metal carbonyl compound, 1- 5000ppm of oxygen and 20ppb- 2ppm of arsenic pass is led to pass through a deep hydrolyst, deep desulfurizer, a protectant, a deoxidizer and an arsenic-removing agent and lead the total content of sulfur (H2S+COS) is less than 0.01ppm (10ppb), the chlorine content is less than 0.01ppm (10ppb), the metal carbonyl compound content is less than 0.02ppm (20 ppb), the oxygen content is less than 1ppm and the arsenic content is less than 0.02ppm (20 ppb), which realizes the deep purification purpose and prolongs the service life of the methanol synthetic catalyst from the present two years to 4-6 years, and prolongs the service life of Fischer-Tropsch (F-T) from the present 8-12 months to 2-3 years and doubles the service life of the noble metal of Pb, Pt, Rh, Au, Ag and so on that are used for producing acetic acid, acetic anhydride, butyl alcohol and so on by oxo-synthesis.

Description

technical field [0001] The present invention relates to the deep purification method of the synthetic gas that coal, coke, heavy oil, residual oil or natural gas are produced as raw material, and its index is to make H 2 S and COS were removed to <0.005×10 -6 That is 5ppb, total sulfur T S (H 2 S+COS) removed to <0.01×10 -6 That is, 10ppb, chlorine is removed to <10ppb, metal carbonyl compounds are removed to <20ppb, oxygen is removed to <1ppm, and arsenic is removed to <20ppb. Background technique [0002] For large and medium-sized methanol plants or coal-to-oil plants that use coal, coke, heavy oil, residual oil or natural gas as raw materials to produce synthesis gas, most of the synthesis gas is purified by washing with low-temperature methanol, and the service life of the methanol synthesis catalyst is generally 2 years. The service life of coal-to-oil Fischer-Tropsch synthesis catalysts is 8-12 months. These two kinds of synthesis catalysts are e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B3/50C01B3/54C01B3/58
CPCC01B2203/0485C01B2203/045C01B2203/0435C01B2203/0465C01B3/58
Inventor 孔渝华赵麦玲胡红军胡典明陈俊民赵信会王先厚郁正容郑惠林贾丽丽李玉龙李小定徐滨黄艳刚张丽丽张清建
Owner HAISO TECH