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Method and device for simultaneously removing carbonyl sulfide and carbon disulfide

A carbon disulfide and carbonyl sulfide technology, applied in the field of carbon disulfide and carbonyl sulfide removal at the same time, can solve problems such as methods and devices that have not been reported, and achieve the effects of high automation, high integration, and improved utilization efficiency

Active Publication Date: 2017-05-10
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there is no report on the method and device for enhancing the simultaneous removal of carbonyl sulfide and carbon disulfide with dilute sulfuric acid

Method used

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  • Method and device for simultaneously removing carbonyl sulfide and carbon disulfide
  • Method and device for simultaneously removing carbonyl sulfide and carbon disulfide
  • Method and device for simultaneously removing carbonyl sulfide and carbon disulfide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The method for simultaneously removing carbonyl sulfide and carbon disulfide described in this embodiment comprises the following steps:

[0039] (1) The high-temperature flue gas after pre-dust removal treatment is first cooled to 150°C through the waste heat boiler 1, and then heat exchanged through the cooling tower 2, so that the temperature of the flue gas is reduced to 60°C, and the cooling liquid is raised to 60°C.

[0040] (2) The cooled gas passes through the stripping tower 3, and the dilute sulfuric acid with a molar concentration of 0.01mol / L in the stripping tower 3 is brought into the fixed bed reaction tower I4 and the fixed bed reaction tower II5.

[0041] (3) The cooling liquid at 60°C after absorbing heat and heating up in step (1) flows into the heat exchange jackets of the fixed bed reaction tower I4 and the fixed bed reaction tower II5, and the fixed bed reaction tower I4 and the fixed bed reaction tower II5 The temperature of the internal catalyst ...

Embodiment 2

[0049] The method for simultaneously removing carbonyl sulfide and carbon disulfide described in this embodiment comprises the following steps:

[0050] (1) The high-temperature flue gas after pre-dust removal treatment is first cooled to 200°C through the waste heat boiler 1, and then heat exchanged through the cooling tower 2, so that the temperature of the flue gas is reduced to 80°C, and the cooling liquid is raised to 80°C.

[0051] (2) The cooled gas passes through the stripping tower 3, and the dilute sulfuric acid with a molar concentration of 0.06mol / L in the stripping tower 3 is brought into the fixed bed reaction tower I4 and the fixed bed reaction tower II5.

[0052] (3) The cooling liquid at 80°C after absorbing heat and heating up in step (1) flows into the heat exchange jackets of the fixed bed reaction tower I4 and the fixed bed reaction tower II5, and the fixed bed reaction tower I4 and the fixed bed reaction tower II5 The temperature of the internal catalyst ...

Embodiment 3

[0060] The method for simultaneously removing carbonyl sulfide and carbon disulfide described in this embodiment comprises the following steps:

[0061] (1) The high-temperature flue gas after pre-dust removal treatment is first cooled to 180°C through the waste heat boiler 1, and then heat exchanged through the cooling tower 2, so that the temperature of the flue gas is reduced to 95°C, and the cooling liquid is raised to 95°C.

[0062] (2) The cooled gas passes through the stripping tower 3, and the dilute sulfuric acid with a molar concentration of 0.1 mol / L in the stripping tower 3 is brought into the fixed bed reaction tower I4 and the fixed bed reaction tower II5.

[0063] (3) The cooling liquid at 95°C after absorbing heat and heating up in step (1) flows into the heat exchange jackets of fixed bed reaction tower Ⅰ4 and fixed bed reaction tower Ⅱ5, and the fixed bed reaction tower Ⅰ4 and fixed bed reaction tower Ⅱ5 The temperature of the internal catalyst was raised to ...

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Abstract

The invention discloses a method and a device for simultaneously removing carbonyl sulfide and carbon disulfide. The device which is a desulfurization device comprises a heat exchange system, an assistant catalysis system, a continuous operation system, a catalyst regeneration system and the like. The heat exchange system comprises a cooling tower and fixed-bed reaction towers, the assistant catalysis system comprises a stripping tower, a spray tower and a communication pipe, the continuous operation system comprises the two fixed-bed reaction towers, and the catalyst regeneration system comprises the heat exchange system and a regeneration spray system. The method and the device have the advantages that the method is high in desulfurization efficiency, heat from high-temperature flue gas can be effectively utilized, dilute sulfuric acid which is a product can be recycled, and accordingly the catalytic reaction efficiency can be improved; the double reaction towers are respectively positioned at a catalytic reaction stage and a catalyst regeneration stage and can be switched over by the aid of electromagnetic valves in a timed manner, and accordingly continuous operation of the systems can be guaranteed; elemental sulfur on the surfaces of deactivated catalysts can be transferred into liquid phases in regeneration procedures and is convenient to extract in follow-up procedures, and the device is high in integration level and automation degree.

Description

technical field [0001] The invention relates to a method and device for simultaneously removing carbonyl sulfide and carbon disulfide, belonging to the field of air pollution control. Background technique [0002] As the main organic sulfur, COS, CS 2 Widely present in industrial flue gas, such as yellow phosphorus tail gas, blast furnace tail gas, etc. Discharged into the atmosphere during industrial production and use will cause serious pollution and harm to the environment and the human body. Trace amounts of CS in industrial production 2 and COS have a poisonous effect on the catalyst, so that its catalytic effect and service life are seriously affected, CS 2 and COS also generate H through a slow hydrolysis reaction 2 S, corroded production equipment, not only brought great economic losses to industrial production, but also increased equipment investment and product costs, while COS and CS 2 The emissions are also a waste of sulfur resources. [0003] Removal of CO...

Claims

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Application Information

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IPC IPC(8): B01D53/86B01D53/48
CPCB01D53/8603B01D2257/30B01D2257/308B01D2255/808B01D2258/0283Y02P20/129
Inventor 李凯宋辛宁平孙鑫王驰汤立红
Owner KUNMING UNIV OF SCI & TECH
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