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Wet-process tower for deacidification by wet process

A wet method and deacidification technology, applied in separation methods, chemical instruments and methods, gas treatment, etc., can solve the problems of equipment aging, affecting the service life and use effect of equipment, so as to maintain integrity, reduce water vapor and effective Effect of acid gas content, resistance to decomposition and deformation

Inactive Publication Date: 2020-08-07
SHANGHAI TECHSPRAY ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, due to the long-term acid-base environment of the relevant equipment in the tower, the equipment is prone to acid-base corrosion and aging, which seriously affects the service life and use effect of the equipment. Combined with the wet system, this product was developed. invention

Method used

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  • Wet-process tower for deacidification by wet process
  • Wet-process tower for deacidification by wet process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Preparation of PP filler layer The filler is prepared from the following raw materials in parts by weight: 100 parts of polypropylene, 20 parts of glass fiber, 15 parts of mineral filler, 30 parts of compatibilizer, 0.5 part of lubricant, and 0.75 part of antioxidant.

[0034] The preparation method of the filler is as follows:

[0035] Step 1. Weighing raw materials according to the proportion for later use, wherein the polypropylene and mineral fillers are dried to obtain a dry mixture for later use;

[0036] Step 2. Add the mixture A of step 1, maleic anhydride graft, compatibilizer, lubricant and antioxidant into the high-speed mixer in sequence, use the high-speed mixer to mix the materials for 10 minutes, and then add the mixed materials into the double In the screw extruder, glass fiber is added to the exhaust port of the twin-screw extruder at the same time as melting and extruding, and it is melted and reacted to extrude and granulate.

[0037] The process con...

Embodiment 2

[0039] Preparation of PP filler layer The filler is prepared from the following raw materials in parts by weight: 100 parts of polypropylene, 25 parts of glass fiber, 17.5 parts of mineral filler, 25 parts of compatibilizer, 0.75 part of lubricant, and 1 part of antioxidant.

[0040] The preparation method of the filler is as follows:

[0041] Step 1. Weighing raw materials according to the proportion for later use, wherein the polypropylene and mineral fillers are dried to obtain a dry mixture for later use;

[0042] Step 2. Add the mixture A of step 1, maleic anhydride graft, compatibilizer, lubricant and antioxidant into the high-speed mixer in sequence, use the high-speed mixer to mix the materials for 10 minutes, and then add the mixed materials into the double In the screw extruder, glass fiber is added to the exhaust port of the twin-screw extruder at the same time as melting and extruding, and it is melted and reacted to extrude and granulate.

[0043] The process con...

Embodiment 3

[0045] Preparation of PP filler layer The filler is prepared from the following raw materials in parts by weight: 100 parts of polypropylene, 30 parts of glass fiber, 25 parts of mineral filler, 30 parts of compatibilizer, 1 part of lubricant, and 1.25 parts of antioxidant.

[0046] The preparation method of the filler is as follows:

[0047] Step 1. Weighing raw materials according to the proportion for later use, wherein the polypropylene and mineral fillers are dried to obtain a dry mixture for later use;

[0048] Step 2. Add the mixture A of step 1, maleic anhydride graft, compatibilizer, lubricant and antioxidant into the high-speed mixer in sequence, use the high-speed mixer to mix the materials for 10 minutes, and then add the mixed materials into the double In the screw extruder, glass fiber is added to the exhaust port of the twin-screw extruder at the same time as melting and extruding, and it is melted and reacted to extrude and granulate.

[0049] The process cond...

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Abstract

The invention relates to the field of waste gas treatment equipment, and in particular, relates to a wet-process tower for deacidification by a wet process. The wet-process tower comprises a flue gasinlet, a tower body, a flue gas cooling part and a flue gas dehumidifying part; the flue gas cooling part comprises a cooling part spraying device, a primary demisting layer made of PP and a cooling liquid circulating system arranged outside the tower, and the cooling part spraying device comprises a silicon carbide cooling part nozzle; the flue gas dehumidifying part is sequentially provided witha condensate collecting layer, a packing layer, a dehumidifying part spraying device, a secondary demisting layer, an anti-scattering net and a dehumidifying liquid circulating system which are arranged from bottom to top, and the dehumidifying liquid circulating system is arranged outside the tower body; the condensate collecting layer comprises a chimney cap, and the chimney cap is made of glass fiber reinforced plastics; the dehumidifying part spraying device comprises a dehumidifying part nozzle made of silicon carbide, the packing layer and the secondary demisting layer are PP packing layers, and the anti-scattering net is made of PP. The interior of the tower body is made of a certain material, so that the deacidification and dewhitening effects are improved, and higher pollutant discharge requirements are met.

Description

technical field [0001] The invention relates to the field of waste gas treatment equipment, in particular to a wet tower using wet deacidification. Background technique [0002] The flue gas discharged after wet deacidification carries a large amount of water vapor. When the wet flue gas enters the atmosphere with a lower temperature, it will form a "white smoke" phenomenon, causing visual pollution, and bringing huge public opinion pressure to the enterprise. [0003] At present, more than 85% of domestic coal-fired plants and steel sintering adopt wet deacidification process, the temperature of the discharged wet flue gas is between 45 and 55 °C, and the moisture content is between saturated. The low-temperature saturated wet flue gas is directly discharged through the chimney and mixed with the lower temperature atmospheric environment. A large amount of water vapor in the flue gas condenses into small droplets when condensed. After the refraction or scattering of light, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/78B01D53/68B01D53/50B01D5/00B01J19/30
CPCB01D5/00B01D53/002B01D53/502B01D53/68B01D53/78B01D2257/2045B01J19/30
Inventor 朱晔斐马骥邹贞徐文辉付永强夏懿郭伟
Owner SHANGHAI TECHSPRAY ENG
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