Petrochemicals

1, flammable and explosive gases are more.
Such as low boiling point of ketones, aldehydes, easy polymerization of unsaturated hydrocarbons, etc., a large number of flammable and explosive gases such as not taking appropriate measures, easy to cause fires, explosions and accidents, which are extremely dangerous. 
2, most of the emissions are irritating or corrosive.
Such as sulfur dioxide, nitrogen oxides, chlorine, hydrogen fluoride and other gases are irritating or corrosive, especially sulfur dioxide emissions are the largest, sulfur dioxide gas directly damage human health, corrosion of metals, buildings and sculptures on the surface, but also easy to oxidation into sulfate landing on the ground, pollution of soil, forests, rivers, lakes.
3, the exhaust gas in the floating particles of many kinds, harm.
The floating particles excluded from chemical production include dust, smoke, acid mist, etc. There are many kinds, which are more harmful to the environment. Especially when floating particles and harmful gases exist at the same time can produce synergistic effects, the harm to people is more serious.

Exhaust gases from petrochemical plants are usually of three types:
(1) compounds containing sulfur, such as hydrogen sulfide, mercaptans, dimethyl sulfide, sulfur ethers, and heterocyclic compounds containing sulfur
(2) compounds containing nitrogen, such as ammonia, amines, nitrile, nitro compounds and nitrogen-containing heterocyclic compounds, etc;
(3) compounds composed of carbon, hydrogen or carbon, hydrogen and oxygen (lower alcohols, aldehydes, fatty acids, etc.).
One of the eight odoriferous substances that have a greater impact on humans are: hydrogen sulfide, ammonia, trimethylamine, methyl mercaptan, methyl sulfide, carbon disulfide, styrene, dimethyl disulfide. And we usually refer to the malodorous gas, refers to the diffusion in the air with malodorous gas.
>>Emission standards
Exhaust emission standards, with reference to the "Volatile Organic Compounds Control Emission Standards" (GB37822-2019), "Shandong Province Volatile Organic Compounds Emission Standards" (DB37-2801), the emission standards for exhaust gases are as follows:

(1) information provided by the owner in relation to the project
(2) "Law of the People's Republic of China on Environmental Protection" (2015-01-01)
(3) "Air Pollution Prevention and Control Law of the People's Republic of China" (2016-01-01)
(4) Ambient Air Quality Standards (GB3095-2012)
(5) "Law of the People's Republic of China on the Promotion of Cleaner Production", Decree No. 72 of the President of the People's Republic of China
(6) National Environmental Protection "Thirteenth Five-Year" Plan
(7) "Comprehensive Emission Standards for Air Pollutants" (GB16297-1996)
(8) "Emission Standards for Odor Pollutants" (GB14554-1993)
(9) "Environmental Protection Design Code for Construction Projects" (GB50483-2009)
(10) "Design Code for Heating, Ventilation and Air Conditioning" (GB50019-2003)
(11) "Building Design Fire Code" (GB50016-2014)
(12) "Code for the design of power supply and distribution systems" (GB50052-2009)
(13) "Emission Standards for Volatile Organic Compounds Control in Industrial Enterprises" DB13/2322-2016

The process route of low concentration exhaust gas is proposed to use "catalytic combustion + activated carbon adsorption and desorption + fan" for effective exhaust gas treatment, while high concentration exhaust gas should be treated by RTO thermal storage combustion process.
The process equipment diagram is as follows:

Catalytic combustion + activated carbon adsorption and desorption + fan

(1) After the waste gas is pretreated to remove dust and particulate matter, it is sent to the activated carbon adsorber. When the activated carbon adsorber Ⅰ is close to saturation, firstly, the treated gas is automatically switched to the activated carbon adsorber Ⅱ (activated carbon adsorber Ⅰ stops adsorption operation), and then the hot airflow is used to desorb and desorb the activated carbon adsorber Ⅰ to desorb the organic matter from the activated carbon. In the desorption process, the organic waste gas has been concentrated, the concentration is tens of times higher than the original, up to 2000ppm or more, the concentrated waste gas is sent to the catalytic decomposition device, and finally it is discharged as CO2 and H2O.
(2) After completing desorption and desorption, the activated carbon adsorber Ⅰ enters the standby state, and when the activated carbon adsorber Ⅱ is close to saturation, the system automatically switches back and desorbs and desorbs the activated carbon adsorber Ⅱ at the same time, so the cycle works.
(3) When the concentration of organic waste gas reaches 2000ppm or more, the catalytic bed can be maintained in self-ignition without external heating. This solution not only saves the energy consumption greatly, but also reduces the equipment investment because the processing capacity of catalytic decomposer is only 1/10 of the original exhaust gas processing capacity. This solution is suitable for both continuous and intermittent operation.
RTO regenerative combustion process roadmap:

1 Field visit Technical survey
2 Secondary demonstration Provide solutions
3 Technical exchange Both sides visit each other
4 Construction according to the contract Acceptance and delivery
5 File and record service forever