Changchun Dongshi Science and Technology Industrial Co., Ltd. owns its own intellectual property technology, QYD chemical mass transfer internals, and has been operating stably for one year after the industrialization test of Shandong Ningyang Feida Chemical Co., Ltd. in the second half of last year. Shandong Haihua Shengxing Chemical Co., Ltd. implemented two transformation towers. After replacing the packing with QYD-type internals, the production capacity increased by 6.49%, and the power consumption of the lean-liquid pump of the variable displacement device decreased by 43.6%. The operation shows that after the adoption of the QYD type chemical mass transfer internal device, the sulfur capacity of the desulfurization equipment is increased, the circulation volume of the solution is reduced, the problem of large regeneration load is solved, the quality of the lean liquid is improved, and thus the desulfurization of the fertilizer industry is pending for many years. The tower plug tower problem was completely overcome and the gas purification degree was steadily improved. In addition, the consumption of desulfurization materials was significantly reduced, the soda ash decreased by 14.9% year-on-year, and the catalyst decreased by 36.7%.
At present, most desulfurization towers of chemical fertilizer production enterprises adopt pressurized gas desulfurization desulfurization towers to use packed towers. As the scale of production continues to expand, the application of high-sulfur coal and the diversification of post-process products are adjusted. The phenomenon has become more and more serious, resulting in frequent shutdowns and maintenance. To this end, Changchun Dongshi Company has conducted a large number of experiments to research and develop gas-liquid composite mass transfer internals for pressurized feed gas desulfurization towers. It uses gas-liquid direct contact, bubbling turbulence, not easy to plug the tower, and more intensified the gas-liquid mass transfer process. This technology has been evaluated by the expert on-site technical review organized by the National Chemical Ammonia Design Technology Center Station and has been identified as having significant advantages in energy efficiency. It is the first advanced technology in the domestic chemical fertilizer industry. The chemical internals absorb the advantages of traditional plate towers and packed towers, and have made many innovations in preventing sulphur blocking and enhancing the mass transfer process, so that the new internals improve the selectivity of hydrogen sulfide absorption. . In addition, when the internals are used in the overall design of the new tower of the desulfurizer, the height of the tower can be reduced by 1/3 and the investment can be saved by more than 30% compared with a packed tower with the same conditions.
At present, in addition to Shandong Ningyang, Shandong Haihua Shengxing and other enterprises, Shanxi Jingle Coking, Shandong Qiluyihua, Hubei Saning Chemical Industry, Anhui Yingshang, Henan Xinguan and other 14 companies are using the technology to start the implementation of technological transformation. .
At present, most desulfurization towers of chemical fertilizer production enterprises adopt pressurized gas desulfurization desulfurization towers to use packed towers. As the scale of production continues to expand, the application of high-sulfur coal and the diversification of post-process products are adjusted. The phenomenon has become more and more serious, resulting in frequent shutdowns and maintenance. To this end, Changchun Dongshi Company has conducted a large number of experiments to research and develop gas-liquid composite mass transfer internals for pressurized feed gas desulfurization towers. It uses gas-liquid direct contact, bubbling turbulence, not easy to plug the tower, and more intensified the gas-liquid mass transfer process. This technology has been evaluated by the expert on-site technical review organized by the National Chemical Ammonia Design Technology Center Station and has been identified as having significant advantages in energy efficiency. It is the first advanced technology in the domestic chemical fertilizer industry. The chemical internals absorb the advantages of traditional plate towers and packed towers, and have made many innovations in preventing sulphur blocking and enhancing the mass transfer process, so that the new internals improve the selectivity of hydrogen sulfide absorption. . In addition, when the internals are used in the overall design of the new tower of the desulfurizer, the height of the tower can be reduced by 1/3 and the investment can be saved by more than 30% compared with a packed tower with the same conditions.
At present, in addition to Shandong Ningyang, Shandong Haihua Shengxing and other enterprises, Shanxi Jingle Coking, Shandong Qiluyihua, Hubei Saning Chemical Industry, Anhui Yingshang, Henan Xinguan and other 14 companies are using the technology to start the implementation of technological transformation. .
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