Sichuan Qingyuan Envionmental Engineering Co.,Ltd.
Weiyuan Desulfurization and Dust Removal Project
Sichuan Gulin Iron Bridge Cement Denitrification Project
Luzhou Lanliang Cement Denitrification Project
Anyang Yingde Gas Co., Ltd. 150000Nm3/h synthesis gas project sulfur recovery flue gas ammonia desulfurization project
Side-blown smelting furnace flue gas desulfurization project of Yangchun Jinrui Environmental Protection Technology Development Co., Ltd.
Nandan County Jilang Indium Industry Co., Ltd. Flue Gas Desulfurization Project
Zinc oxide desulfurization
Process principle: use the metallurgical industry's own zinc oxide dust for desulfurization, and recycle the desulfurization by-products. Process classification: Oxidation process: This process uses air to forcibly oxidize the desulfurized slurry to oxidize the desulfurized product to zinc sulfate. After purification, the zinc sulfate solution is used for electrolysis of metal zinc, or concentrated and crystallized to produce qualified zinc sulfate heptahydrate or zinc sulfate monohydrate products. Thermal decomposition process: this process is that the product after the desulfurization mainly enters the sediment, and after the solid-liquid separation, the sediment and the zinc iron ore are sent to a boiling furnace or a rotary kiln is used for thermal decomposition, and high-concentration SO is produced for acid production, and regenerate zinc oxide.
The CaCO3 powder is sprayed into the furnace through pneumatic ash conveying, and the CaCO3 is decomposed and calcined into CaO, and then reacts with SO2 in the flue gas to generate CaSO4, which is discharged with the slag.
Calcium-calcium double alkali desulfurization
Using alkaline calcium-based compounds as desulfurizers, mainly including quicklime, slaked lime, limestone, white mud (the main component of calcium carbonate), and the waste residue in the production process of Glauber's salt (the main component of calcium carbonate), etc. through pulping spray and flue gas. SO2 in the reaction occurs to achieve the purpose of desulfurization.
The semi-dry desulfurization process means that the desulfurizer is added in a wet state, and the moisture in the slurry is evaporated by the sensible heat of the flue gas. During the drying process, the desulfurizer reacts with the sulfur dioxide in the flue gas to form a dry powder product. In order to improve the desulfurization efficiency, lime powder is usually used as a desulfurizing agent. If the bag filter is used together, the desulfurization efficiency can be improved by 10% to 15%.
Calcium-calcium double alkali method & zinc oxide method compatible process desulfurization
For the lead and zinc industry, our company has developed a new compatible process combining calcium-calcium double-alkali method and zinc oxide method for desulfurization. This process is compatible with the above two processes and has the advantages of both processes. Scope of application: Enterprises that have their own zinc oxide fume and dust, but the amount of fume and dust is insufficient.
Ammonia desulfurization 2017-03-3111:37:05 Source: Qingyuan Energy Environmental Technology Co., Ltd. Process principle: Ammonia desulfurization is based on ammonia (waste ammonia), liquid ammonia (gas ammonia), urea, ammonium bicarbonate and other ammonia-containing substances as desulfurization The main by-product is nitrogen fertilizer, and the desulfurization facility does not produce secondary pollution. The basic technical principles are as follows:
Selective non-catalytic reduction of NOx (SNCR)
Process principle: The urea/ammonia water is injected into the area where the flue gas temperature is 850~1100℃ as a reducing agent, and the nitrogen oxides (NOX) in the flue gas are reduced to harmless nitrogen (N2) and water (H2O) The chemical reaction formula is: NO+CO(NH2)2+1/2O2→2N2+CO2+H2O Urea 4NH3+4NO+O2→4N2+6H2O Characteristics of ammonia water system: Denitrification efficiency is 35%~65% Construction investment cost Lower scope of application: Flue gas denitrification in small and medium boilers, cement plants, iron and steel plants, glass kilns, power plants, etc. Typical project: Luzhou Lanliang Cement Co., Ltd. 2000t/d clinker new dry process rotary kiln cement production line flue gas denitrification project (SNCR-ammonia)
Selective Catalytic Reduction (SCR)
The reducing agent ammonia (NH3) is injected into the independent reactor area with a flue gas temperature of 280~420 °C, and under the action of the reactor catalyst, the nitrogen oxides (NOX) in the flue gas are reduced to harmless nitrogen ( The process of N2) and water (H2O), the chemical reaction formula is:
Recently, our company and Shaya Saipu Energy Co., Ltd. successfully signed a contract on the gas engine exhaust gas denitrification project supporting the company's Xinjiang Shunbei Oilfield air discharge to produce LNG project.
On June 29, Qingyang District held a "two priorities and one first" commendation meeting to commend outstanding Communist Party members, outstanding party workers and advanced grass-roots party organizations, and further encourage party organizations at all levels and the majority of party members in the region to stay true to their original aspirations and keep their mission in mind. Give full play to the fighting fortress role of grass-roots party organizations and the vanguard and exemplary role of party members, and strive to be the first and take the lead in the vivid practice of building a park city demonstration area that implements the new development concept. Sun Anwu, the secretary of our branch, has excellent professional and technical knowledge, loves his work, actively learns, keeps pace with the times, always maintains the advanced nature and fine tradition of party members, and actively develops and trains advanced employees to join the party. member name.
On August 11, 2021, the comprehensive optimization and treatment project of the roasting kiln exhaust system of Tianqi Lithium Industry (Shehong) Co., Ltd. undertaken by our company successfully passed the acceptance test at one time, and the test index was better than the performance assessment index.
In the prosperous age of China, the pine and cypresses of Mount Tai are used as strings, the roar of the Yellow River is used as drums, the waves of the Yangtze River are used for music, the snow lotus of Tianshan Mountain is used as the qin, and the flagpole of the square is used as the flute. The brilliance of the party should be kept in mind, the image of the party should be used as an example, the style of the party will illuminate the future, and the feelings of the party will shine brightly. On the 100th anniversary of the founding of the party, I wish our party to grow stronger.
Recently, our company has obtained the utility model patent authorization of "a two-stage tube-and-tube heat exchanger". In view of the treatment needs of different industries and the differences in flue gas components, our company has developed a two-stage tube heat exchanger suitable for the lithium battery industry in the details of the comprehensive treatment process of the system, which has laid a good foundation for the long-term stable operation of the system. . The core technology is continuously developed and innovated, injecting new vitality into the development of our company.
After many on-site inspections and technical exchanges in the early stage, the owner highly recognized the technical solutions provided by our company and successfully signed a contract recently.