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Pollution sources of exhaust gases

Pollutant factors

Unit governance measures

Total system control measures for exhaust gases

1

Cycle waste gas 32 millionNm³/a

Generate concentration (mg/Nm³)

VOC_S 1795
HCl 4720

Improving the滴加 method of the ring reaction, using a multi-stage condenser for deep cooling, and two-stage film absorption tower and two-stage spray absorption tower for absorption, a very small amount of organic gas and hydrogen chloride enter the tail gas treatment system.

Two-stage spray absorption tower absorption, multi-stage condenser condensation, activated carbon adsorption, and then discharged at 35 meters.
Emission concentration VOC_s100mg/ Nm³, HCL5mg/ Nm³

Generated amount (t/a)

VOC_S 57.43
HCl 153.13

Emission concentration (mg/Nm³)

VOC_S299.09
HCl 49.84

Emission (t/a)

VOC_S9.57
HCl 1.60

2

Acid gas waste 32 millionNm³/a

Generate concentration (mg/L)

HCl 4720

After two-stage cooling and two-stage film absorption, it enters the tail gas treatment system.

Generated amount (t/a)

153.13

Emission concentration (mg/Nm³)

HCl 47.2

Emission (t/a)

1.53

3

AHMT waste gas 14.4 millionNm³/a

Generate concentration (mg/L)

VOC_S3030

After two-stage cooling, it enters the tail gas system.

Generated amount (t/a)

VOC_S43.64

Emission concentration (mg/Nm³)

VOC_S454.5

Emission (t/a)

VOC_S6.55

4

Hexane evaporation waste gas

Generated amount (t/a)

6.38

After two-stage cooling, it enters the tail gas system.

Emission (t/a)

1.6

5

Umbelliferone solvent-free waste gas

Generated amount (t/a)

7.98

After two-stage cooling, it enters the tail gas system.

Emission (t/a)

3.2

6

Dichloroethane Stripping Off-gas

Generated amount (t/a)

13.30

After two-stage cooling, it enters the tail gas system.

Emission (t/a)

7.98

7

Natural gas boiler waste gas 5.36 millionNm³/a

Generate concentration (mg/Nm³)

Smoke22

Heat recovery system

Direct emission

SO₂18

NO_X73

Generated amount (t/a)

Smoke 0.118

SO₂0.096

NO_X0.391

Emission concentration (mg/Nm³)

Smoke22

SO₂ 18

NO_X 73

Emission (t/a)

Smoke 0.118

SO₂0.096

NO_X0.391

Generated amount (t/a)

Environmental measures

Process waste residue

15

Hazardous waste entrusted to a qualified unit for disposal

Sludge

11.5

Domestic waste

7.3

Municipal solid waste sanitary landfill

Total

42.4