GB/T 40009-2021Technical specification of waste tyre/rubber pyrolysis (English PDF)

1 Scope

This Standard specifies the general rules, comprehensive resource utilization products, pollutant emission control and marking, packaging, storage and transportation for the waste tyre/rubber pyrolysis production.

This Standard applies to the waste tyre/rubber pyrolysis production, as well as the environmental impact assessment, design, completion acceptance and operation management of new, rebuilt, and expanded waste tyre/rubber pyrolysis production facilities.

This Standard is not applicable to waste rubber and plastic products listed in the Directory of National Hazardous Wastes, and neither is applicable to the waste rubbers such as waste nitrile rubber, fluorine rubber, neoprene, etc. treated by the pyrolysis method.

2 Normative References

The following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) is applicable to this document.

GB/T 384 Determination of Calorific Value of Petroleum Products

GB/T 2589 General principles for calculation of total production energy consumption

GB/T 3778 Carbon Black for Use in Rubber Industry

GB 8978 Integrated Wastewater Discharge Standard

GB 12348 Emission Standard for Industrial Enterprises Noise at Boundary

GB/T 16157 The Determination of Particulates and Sampling Methods of Gaseous Pollutants Emitted from Exhaust Gas of Stationary Source

GB 30000.7 Rules for Classification and Labelling of Chemicals - Part 7: Flammable Liquids

3 Terms and Definitions

4 General

The consumption of only non-condensable combustible gas produced by the system as a heat source is not included in the calculation. The energy consumption for deep processing of pyrolysis recovered carbon black and recycled steel wire from pyrolysis shall be calculated separately; and the comprehensive energy consumption calculation method of each product shall be in accordance with GB/T 2589.

4.2.3 The non-condensable combustible gas and flue gas waste heat recycling technology shall be fully used; adopt energy-saving and environmentally friendly heating methods to reduce energy consumption and flue gas emissions.

4.2.4 The temperature of the solid product discharge of the pyrolysis device shall be lower than 80°C; and the solid product discharge system shall be airtight to prevent dust pollution.

4.2.5 A combustible gas detection and alarm system shall be installed in the complete system of waste tyre/rubber pyrolysis, and its setting shall comply with the provisions of SY/T 6503.

5 Comprehensive Resources Utilization Products

6 Pollutant Emission Control

6.7 The device or nozzles in the pyrolysis equipment, that are frequently opened (open at least once every 2 days of operation), shall be equipped with a partial or overall exhaust gas collection and purification device. The waste gas overflowed during the blowdown is collected can be discharged after purification treatment. The discharge of pollutants shall comply with the provisions of HJ 1034.

6.8 The crushing of the pyrolysis recovered carbon black shall be carried out in a closed system to collect and treat dust.

6.9 The water for waste tyre/rubber pyrolysis production shall be recycled. The produced wastewater shall be equipped with supporting wastewater collection facilities.

The wastewater shall be treated and recycled in the plant area; the discharging of the treated wastewater shall comply with the provisions of GB 8978.

6.10 Noise pollution shall be controlled during the whole production process of waste tyre/rubber pyrolysis; and noise emission shall comply with the provisions of GB 12348.

6.11 Emission control of air pollutants from leakage of equipment and pipeline components:

a) When volatile organic liquids and non-condensable combustible gas flow pass through the following equipment and pipeline components, volatile organic compounds detectors shall be used for leak detection:

1) Pump;

2) Compressor;

3) Frequently operated valves;

4) Open valve or open pipeline;

5) Flanges and other connecting parts that are frequently disassembled;

6) Pressure relief equipment;

7) Sampling connection system;

8) Other sealing equipment.

b) VOCs escape detection caused by leakage of components such as pyrolysis equipment and pipelines shall be carried out in accordance with the provisions of HJ 733. The maximum limit of leakage of organic matter escaped from components such as pyrolysis equipment and pipelines shall not exceed 2000 µmol/mol (by methane). […]