Cross-flow mobile device and method for continuous production of sulfur from sulfur dioxide

A sulfur dioxide and mobile device technology, applied in chemical instruments and methods, preparation/purification of sulfur, inorganic chemistry, etc., can solve problems such as the difficulty in realizing the industrial production of sulfur dioxide from sulfur dioxide, achieve easy industrial implementation, continuous separation, and reduce airflow resistance Effect

Active Publication Date: 2020-06-02
CHNA ENERGY INVESTMENT CORP LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The main purpose of the present invention is to provide a cross-flow mobile device and method for the continuous production of sulfur from sulfur dioxide, so as to solve the problem in the prior art that it is difficult to realize the industrial production of sulfur from sulfur dioxide

Method used

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  • Cross-flow mobile device and method for continuous production of sulfur from sulfur dioxide

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] use figure 1 The shown device performs catalytic reduction reaction in the way of sulfur dioxide-containing flue gas and reducing gas in cross-flow contact with the catalyst, and continuously separates sulfur-containing gas from the catalyst while the catalytic reduction reaction proceeds to obtain sulfur.

[0047] The main components of sulfur dioxide-containing flue gas are shown in Table 1.

[0048] Table 1

[0049] components water vapor carbon dioxide sulfur dioxide weight percentage 22.5% 15% 5%

[0050] The catalyst is a commercial shaped block activated carbon, the residence time of the flue gas containing sulfur dioxide in the reaction zone 16 is 4-6s, and the continuous slow moving speed of the catalyst is 0.1-0.5m / s; the catalyst inlet 03 and the catalyst outlet 05 Nitrogen protection is used; the reaction temperature in the reaction zone 16 is 650-700°C; the thickness of the catalyst along the flow direction of sulfur dioxide-co...

Embodiment 2

[0053] The residence time of the sulfur dioxide-containing flue gas in the reaction zone 16 is 7-10 s, and the flow resistance of the sulfur dioxide-containing flue gas is between 100-600 Pa. Others are the same as in Embodiment 1. The concentration of sulfur dioxide at the outlet was detected by a gas chromatography-mass spectrometer, and the conversion rate of sulfur dioxide was calculated to be 84%.

Embodiment 3

[0055] The residence time of the sulfur dioxide-containing flue gas in the reaction zone 16 is 12-15 s, the flow resistance of the sulfur dioxide-containing flue gas is between 100-400 Pa, and the others are the same as in Embodiment 1. The concentration of sulfur dioxide at the outlet was detected by a gas chromatography-mass spectrometer, and the conversion rate of sulfur dioxide was calculated to be 86%.

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Abstract

The invention provides a cross flow moving device and method for continuously preparing sulfur with sulfur dioxide. The cross flow moving device comprises a reduction reaction chamber, a catalyst supplying unit, a catalyst collecting unit and a sulfur collecting unit, wherein the reduction reaction chamber is provided with a sulfur dioxide-containing flue gas inlet, a reduction gas inlet, a catalyst inlet, a sulfur-containing gas outlet and a catalyst outlet; the sulfur dioxide-containing flue gas inlet, the reduction gas inlet and the sulfur-containing gas outlet are positioned in the side wall of the reduction reaction chamber; the catalyst inlet is positioned in the top wall of the reduction reaction chamber; the catalyst outlet is positioned in the bottom wall of the reduction reactionchamber; the catalyst supplying unit is connected with the catalyst inlet in order to supply a catalyst to the reduction reaction chamber; the catalyst collecting unit is connected with the catalystoutlet; the sulfur collecting unit is connected with the sulfur-containing gas outlet. By adopting the cross flow moving device in the application, the aim of reducing sulfur dioxide into sulfur at lower energy consumption is fulfilled, and continuous implementation of a reduction reaction and continuous separation of a sulfur product are realized. The cross flow moving device is easy for industrial implementation.

Description

technical field [0001] The invention relates to the field of sulfur dioxide treatment, in particular to a cross-flow mobile device and method for continuously producing sulfur from sulfur dioxide. Background technique [0002] Combustion of coal, natural gas, petroleum, biomass and other substances will produce a large amount of SO 2 The direct emission of flue gas will cause pollution and damage to the environment. Currently, industrial control SO 2 There are many pollutant discharge technologies, such as limestone-gypsum wet desulfurization technology, ammonia desulfurization technology, calcium-based dry / semi-dry desulfurization technology, activated coke adsorption desulfurization technology, ionic liquid absorption desulfurization technology, etc. Among them, activated coke adsorption desulfurization technology and ionic liquid absorption desulfurization technology can recover SO in flue gas 2 , Using the Claus process to achieve recycling, the finished product of re...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C01B17/04
CPCC01B17/0473
Inventor杨春振吴华赵剑
OwnerCHNA ENERGY INVESTMENT CORP LTD