Treatment system for tail gas of spray drying tower

A technology of spray drying tower and treatment system, which is applied in gas treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problems of heavy odor, large air volume of drying tower exhaust gas, and difficult treatment. To achieve the effect of reducing pollution

Active Publication Date: 2018-06-29
ZHEJIANG DIBANG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large air volume, high humidity, and heavy stench of the drying tower exhaust gas, the treatment is difficult and has a certain impact on the environment. At present, there is no mature and effective method for treating the drying tower exhaust gas. Therefore, the dye drying tower exhaust gas The treatment of dyes has become one of the urgent problems that should be solved in the dye industry

Method used

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  • Treatment system for tail gas of spray drying tower

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as figure 1 As shown, a treatment system for the tail gas of the spray drying tower is provided. The tail gas of the spray drying tower comes out from the spray drying tower 1, the temperature of the tail gas is 52°C, and the dust content is 10mg / M 3 , the dimensionless stench is 800.

[0029] The tail gas is processed by the cyclone device 2 and the bag dust removal device 3, and the dye products in the gas are recovered. The tail gas is divided into air flow I and air flow II (the flow rate of air flow I accounts for 10% of the total flow of tail gas), and the air flow I is treated by the waste gas decomposition device 10. After being heated to 103°C by the heating device 8, it returns to the spray drying tower 1. The waste gas decomposition device includes a water retainer, an electrostatic precipitator, a gaseous molecular resonance processor and an ultraviolet light machine connected in sequence. Detected, the dimensionless stench was 75.

[0030] The air fl...

Embodiment 2

[0033] Such as figure 1 As shown, a treatment system for the tail gas of the spray drying tower is provided. The tail gas of the spray drying tower comes out from the spray drying tower 1, the temperature of the tail gas is 60°C, and the dust content is 6mg / M 3 , the dimensionless stench is 1200.

[0034] The tail gas is processed by the cyclone device 2 and the bag dust removal device 3, and the dye products in the gas are recovered. The tail gas is divided into air flow I and air flow II (the flow rate of air flow I accounts for 35% of the total flow of tail gas). After being heated to 100°C by the heating device 8, it returns to the spray drying tower 1. The exhaust gas decomposition device includes a water retainer, an electrostatic precipitator, a gaseous molecular resonance processor and an ultraviolet light machine connected in sequence. After the airflow I is treated, the dust content is not Detected, dimensionless stench is 80.

[0035] The air flow II continues to ...

Embodiment 3

[0038] Such as figure 1 As shown, a treatment system for the tail gas of the spray drying tower is provided. The tail gas of the spray drying tower comes out from the spray drying tower 1, the temperature of the tail gas is 46°C, and the dust content is 16mg / M 3 , the dimensionless stench is 3500.

[0039] The tail gas is processed by the cyclone device 2 and the bag dust removal device 3, and the dye products in the gas are recovered. The tail gas is divided into air flow I and air flow II (the flow of air flow I accounts for 60% of the total flow of the tail gas). After the air flow I is treated by the waste gas decomposition device 10 After being heated to 103°C by the heating device 8, it returns to the spray drying tower 1. The waste gas decomposition device includes a water retainer, an electrostatic precipitator, a gaseous molecular resonance processor and an ultraviolet light machine. After the airflow I is treated, the dust content is not detected. Dimensionless sten...

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Abstract

The invention discloses a treatment system for tail gas of a spray drying tower. The treatment system comprises a cyclone device, a bag type dust collector, a water spraying tower device, a heat exchanger, a cooling device, a water-gas separator and a heating device, wherein the tail gas of the spray drying tower is fed into the cyclone device, is inputted to the bag type dust collector by the cyclone device, enters the water spraying tower device through the bag type dust collector, is inputted to the heat exchanger after being treated by the water spraying tower device, enters the cooling device after passing through the heat exchanger, and is inputted to the gas-water separator after being cooled by the cooling device; a gas part is returned to the heat exchanger by an air blower for preheating after the tail gas is separated by the gas-water separator, is inputted to the heating device after being preheated by the heat exchanger, and is returned to the spray drying tower after being heated by the heating device. The treatment system provided by the invention recycles the tail gas of the dye spray drying tower, effectively utilizes energy, greatly reduces pollution of the tail gas to environment, and effectively utilizes the energy of the gas by exchanging heat.

Description

technical field [0001] The invention belongs to the technical field of waste gas treatment, and in particular relates to a treatment system for tail gas of a spray drying tower. Background technique [0002] At present, the dye industry uses a hot air drying tower to dry the dye to make a powdery finished dye, which is convenient for storage and transportation. Dye drying tower: mainly the air is heated and enters the air distributor on the top of the dryer, and the hot air enters the drying chamber evenly in a spiral shape. The feed liquid passes through the high-speed centrifugal atomizer or high-pressure atomizer on the top of the tower, and is sprayed into very fine mist-like liquid droplets, which can be dried into finished products in a very short period of time in parallel contact with air. The finished product is continuously output from the bottom of the drying tower and the cyclone separator, the fine dust material is collected by the pulse bag collector, and the ...

Claims

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Application Information

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IPC IPC(8): B01D50/00B01D53/00B01D53/32B01D53/86B01D53/76B01D53/72C02F3/00C02F3/34
CPCB01D50/00B01D53/00B01D53/002B01D53/007B01D53/32B01D53/72B01D53/76B01D53/8668B01D2251/104B01D2255/802B01D2259/804C02F3/00C02F3/34C02F2003/001
Inventor 徐万福傅伟松陈华祥徐斌王永
Owner ZHEJIANG DIBANG CHEM
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