Dahua heavy alkali pre-drying device and other three were granted utility model patents

Drying equipment

Dahua Group made new breakthroughs in intellectual property protection. A few days ago, Dahua Group and Dalian Chemical Industry Co., Ltd. jointly declared "a unit for the simultaneous production of ammonium chloride and semi-liquid II for the production of ammonium chloride," "a caustic soda liquid rehydration device II," and "a weight for the alkali system." Alkaline pre-drying device "three utility model patents were authorized by the State Intellectual Property Office, and three other patents were pending.

As the cradle of China's chemical industry, after completing the task of relocation and transformation, Dahua Group paid attention to strategically paying attention to the work of intellectual property rights of enterprises and formulated the “Administrative Measures on the Patent and Patent Technology Application” to encourage and advocate the courage of all technicians. Scientific and technological innovation, active inventions and creations, guided technical personnel to dig deeper into product innovation and process innovation, refined and integrated technological innovation achievements, and strengthened the protection of intellectual property rights. Last year, a total of 2 invention patents and 4 utility model patents were filed.

"A unit for the simultaneous production of ammonium chloride in a semi-liquid mother liquor II cycle" is to partially recycle the semi-mother liquor II. The composition of the concomitant mother liquor does not change, and only the concentration of ammonium bound in the ammonia mother liquor I is reduced, making the same at the cold precipitation temperature. Under the premise that ammonium chloride in ammonia mother liquor I does not scab in the heat exchanger, it can realize multi-product ammonium chloride production under the condition that the heat exchanger is not scarred.

"A liquid of the alkali liquor of the secondary alkali II" means that in the production of soda ash with salt washing, the purified salt water for salt washing is added to the alkali system, which can not only solve the brine swelling of the brine, but also solve the problem. Alkali replenishment is needed, and it can improve the quality of the mother liquor of the concomitant alkali system and improve product quality and yield.

"A heavy alkali pre-drying device for a soda system" is a structural feature of a long horizontal drying stage for a vacuum belt type filtering alkali machine used for heavy alkali filtration, and a low pressure steam pre-drying device is added in the horizontal drying stage. , Soda ash calcination ample by-product low-pressure steam, through temperature and pressure reduction, directly sprayed to the surface of the heavy alkali of the horizontal vacuum belt filter alkali machine, pre-drying the heavy alkali, both to achieve the purpose of pre-drying heavy alkali, but also to avoid Damaged filter cloth reduces the loss of filter cloth and increases the production of heavy alkali.

The acquisition of the three utility model patents is not only an affirmation of the technical innovation of the company’s chemical technicians, but also a proof of Dahua’s innovative strength. Dahua Group will use this as an opportunity to further leverage the advantages of the company's technology system, strengthen the extraction of technological innovation achievements and the protection of independent intellectual property rights, form a continuous innovation mechanism, increase the power of innovation, and gradually increase the core competitiveness of Dahua Group.

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