Regeneration tower foam sulfur-film separation purification method and apparatus

A foamed sulfur and regeneration tower technology, applied in the chemical industry, can solve the problems of easy tower blockage, poor separation effect, and high energy consumption, and achieve the effects of small footprint, reduced sulfur recovery cost, and high packing density

Active Publication Date: 2007-11-14
NANJING JIUSI HIGH TECH
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0005] The purpose of the invention of the present invention is mainly to propose a method for separation and purification of foam sulfur membrane in a regeneration tower in order to solve the problems of poor separation effect of existing sulfur recovery methods and devices, easy tower blockage, and high energy consumption. Another purpose of the present invention is to The device for separation and purification of the above regeneration tower foam sulfur membrane is provided

Method used

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  • Regeneration tower foam sulfur-film separation purification method and apparatus
  • Regeneration tower foam sulfur-film separation purification method and apparatus
  • Regeneration tower foam sulfur-film separation purification method and apparatus

Examples

Experimental program
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Effect test

Embodiment 1

[0036](1) As shown in Figure 1, the sulfur foam at the top of the regeneration tower flows into the foam sulfur tank 1 by its own position difference, and then is sent to the membrane module 4 by the foam sulfur pump 2. The membrane module uses a 19-channel 500nmФ31 ceramic inner membrane with operating pressure It is 0.5MPa and adopts PLC automatic control. When the pressure exceeds the operating pressure, the feed valve A is automatically closed, and the discharge valve F and the backflush valve B at the bottom are opened at the same time, and 0.7MPa high-pressure steam is used to backflush the membrane hole 8S, The sulfur paste in the membrane channel is melted into a liquid, then the recoil valve B is closed and the channel purge valve C is opened at the same time, the membrane channel is purged with 0.7MPa compressed air ②, and the discharge valve F is opened at the same time to discharge.

[0037] (2) The material of the dehydrator 8 is 400 mesh polypropylene twill industria...

Embodiment 2

[0043] (1) As shown in Figure 1, the sulfur foam on the top of the regeneration tower flows into the foam sulfur tank 1 by its own position difference, and then is sent to the membrane module 4 by the foam sulfur pump 2. The membrane module uses a single-channel 200nmФ12 ceramic inner membrane, and the operating pressure It is 0.8MPa and adopts PLC automatic control. When the pressure exceeds the operating pressure, the feed valve A is automatically closed, and the discharge valve F and the backflush valve B at the bottom are opened at the same time. The sulfur paste in the membrane channel is melted into a liquid, then the recoil valve B is closed and the channel purge valve C is opened at the same time, the membrane channel is purged with 1MPa compressed air ②, and the discharge valve F is opened at the same time to discharge.

[0044] (2) The material of the dehydrator 8 is 600 mesh polyester twill industrial filter cloth. At the end of the discharge of the membrane module 4, c...

Embodiment 3

[0050] (1) As shown in Figure 1, the sulfur foam at the top of the regeneration tower flows into the foam sulfur tank 1 by its own position, and then is sent to the membrane module 4 by the foam sulfur pump 2. The membrane module adopts a 7-channel inner membrane of 1μmФ31 polyethylene material. , The operating pressure is 0.2MPa, and it is automatically controlled by PLC. When the pressure exceeds the operating pressure, the feed valve A is automatically closed, and the bottom discharge valve F and the backflush valve B are opened at the same time, and 0.5MPa high-pressure steam is used to backflush the membrane. Hole 15S to melt the sulfur paste in the membrane channel into a liquid, then close the backflush valve B and open the channel purge valve C at the same time, use 0.5MPa compressed air ② to purge the membrane channel, and open the discharge valve F to discharge the material.

[0051] (2) The material of the dehydrator 8 is 400 mesh polyester twill industrial filter cloth...

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Abstract

The invention relates to the foam sulfur separation method in regenerating tower of desulphurizing system by the membrane separation technique. The sulfur foam is changed to dehydration sulfur cream by micro filtering or hyperfiltration membrane filtering system and the evaporator process. The invention also provides the device which is made up of the membrane components, the evaporator and auto controlling system. The foam sulfur becomes to sulfur cream after passing the membrane components and the evaporator, which the membrane and the evaporator are controlled by the auto controlling system. The membrane components use the inner or outer pressure single channel or multi channel membrane terminal filtering mode. The invention has get over the high temperature, high energy cost and low sulfur recovering in the present process and decreases the sulfur recovering cost.

Description

Technical field [0001] The invention relates to a method for separation and purification of foamed sulfur in a regeneration tower, in particular to a method for separation and purification of foamed sulfur in a regeneration tower in a desulfurization system by using membrane separation technology, which belongs to the technical field of chemical industry. Background technique [0002] Sulfur foam is the desulfurization section to absorb H 2 The desulfurization rich liquid after S is a by-product in the regeneration process, which is in the form of foam and is a solid-liquid mixture. The solids are mainly sulfur particles. The sulfur foam is generally separated by filtration. The clear liquid is returned to the system for reuse or the salt process is used to extract by-salts, and sulfur is recovered as a by-product. [0003] For many years, the sulfur recovery processes adopted by small and medium nitrogen fertilizer plants and other related manufacturers have mostly been continuo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B17/02
Inventor 邢卫红徐南平
Owner NANJING JIUSI HIGH TECH
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