Tianchen Chemical Industry: Building Green Chemical Industry Based on Innovation

　　At the beginning of June, I walked into the factory area of ​​Tianye Group Tianchen Chemical Co.
, Ltd.
, the road was lined with flowers and trees, apples and begonias were full of branches, the rockery fountain built by the employees and the koi pond complemented each other, creative garden landscapes, sketches , Sculpture gives people a relaxed and happy feeling
.
Over the years, Tianchen Chemical has always adhered to the concept of people-oriented and green development, taking ecological environmental protection as the foundation of the company's development, continuously strengthening and improving the environmental protection management system, implementing ultra-low emission transformation, carrying out energy conservation and emission reduction, and technical research activities, and actively creating green factory
.

　　Recycle good water and wastewater to achieve zero discharge

　　In order to recycle wastewater, Tianchen Chemical has formulated an implementation plan for the comprehensive utilization of water resources for production, living and greening.
It requires all units to ensure that no drop of industrial wastewater is wasted, and all of them are recycled and reused to reduce production costs for the enterprise
.

　　"In the past, the water-saving process in the factory was relatively general, and both good water and wastewater were sent to primary brine salt
.
After the implementation of the comprehensive utilization plan of water resources in 2020, the wastewater treatment was refined: that is, primary steam condensate water is sent to public works.
The original water tank of the ion membrane, the condensed water of the secondary steam is sent to the electrolytic cell of the ion membrane, which can save 40 cubic meters of water per hour
.
The steam trace heat is also recycled to the circulating water tank, and it is forbidden to discharge it directly
.
” said Wang Jia, director of the alkali workshop of Tianchen Chemical Plant.
, "Since this year, we have made more efforts in water-saving technical transformation.
The alkali workshop has optimized the water-saving plan and process layer by layer, and now it is more and more detailed, with the purpose of realizing the company's ultimate goal of zero discharge of wastewater
.
"

　　"Previously, the mother liquid water was sent to the power plant for use, but now it is reused in the pool of public works as circulating water for replenishment
.
The public works use primary water, and the water consumption is relatively large, so the water can be saved
.
" Tianchen Chemical Public Works Technician Niu Xipeng said that the concentrated water of the desalination workshop is used for the primary salting of salt, and the greening water is replaced by the water from the wastewater, which can save 100 cubic meters of water per hour
.

　　Strictly detect the real-time online monitoring of exhaust gas and dust

　　Tianchen Chemical has 400,000 tons/year polyvinyl chloride and 320,000 tons/year ion-exchange membrane caustic soda plants
.
During the production process, various waste gas and dust will be produced, and the treatment of organic waste gas has become one of the important tasks of the company
.

　　In order to discharge the chlorine tail gas up to the standard, Tianchen Chemical adopts a two-tower series two-stage liquid caustic scrubbing absorption system
.
The system absorbs chlorine-containing waste gas by lye double-column series absorption, the absorption efficiency of chlorine is 99.
9%, and the exhaust gas is discharged up to the standard after absorption
.
The company also designed a secondary cyclone dust collector to dedust and recover PVC dust materials, so as to realize the discharge of waste gas up to the standard
.

　　Calcium carbide is used as the raw material for the production of polyvinyl chloride, and dust is generated in the process of crushing, screening, storage and transportation.
Tianchen Chemical designs a bag filter in the part where the dust overflows, and realizes the discharge of materials up to the standard
.
They also use calcium carbide furnace gas and clean energy natural gas as fuel, and the solid alkali heating furnace uses selective catalytic reduction denitrification treatment device for further treatment to achieve exhaust gas nitrogen oxide emission standards
.

　　In order to strictly monitor the emission of exhaust gas and dust, Tianchen Chemical has changed its self-monitoring plan this year, adding unorganized monitoring points for the synthesis process in the company, changing from manual monitoring to automatic monitoring, and real-time monitoring of non-methane total hydrocarbons, particulate matter and Soda boiler tail gas emissions
.

　　Willing to invest in technological transformation to promote high-quality development of enterprises

　　Calcium carbide production is an extensive process.
Tianchen Calcium Carbide Factory is equipped with corresponding environmental protection facilities for key production links to strictly control the discharge of pollutants.
, to improve the recycling efficiency of emission products, thereby improving the clean production technology level of the calcium carbide industry, and realizing energy saving, pollution reduction and resource conservation in calcium carbide production
.

　　This year, Tianchen Calcium Carbide Plant plans to invest 152 million yuan to carry out the upgrading and upgrading project of dust removal system, the dust collector of raw material screening building, the dust collector of 18 lime silo, the reconstruction of dust collector of lime silo, the reconstruction of dust collector of batching station, and the airtightness of dust removal ash.
Eight environmental protection technical transformation projects for transportation, calcium carbide purification ash, and kiln tail ash closed transportation projects
.

　　"Technologies such as the transformation of dust collectors and airtight conveying of powder ash have mature, complete, safe and reliable applications in the calcium carbide industry
.
Through the implementation of environmental protection technology transformation projects, we can break the original production problems and barriers, transform outdated production technologies, and realize the normal operation of the enterprise.
Stable production
.
" said Zhang Tianhong, deputy chief of the production technology section of Tianchen Calcium Carbide Factory
.

　　With the continuous strengthening of the concept of green manufacturing, Tianchen Chemical will vigorously promote clean production, vigorously promote the management of environmental protection upgrades, and at the same time vigorously build smart factories to create high-quality development enterprises with technological innovation and green ecological development
.