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公开(公告)号：US20220281747A1
公开(公告)日：2022-09-08
申请号：US17738710
申请日：2022-05-06
Applicant: Kunming University of Science and Technology
Inventor： Yi MEI , Yuanzhi ZHU , Yunxiang NIE , Ping LONG , Delong XIE
Abstract: A total heat energy recovery system for furnace-process phosphoric acid is disclosed by the present disclosure, and relates to the technical field of phosphorus chemical industry. The system comprises a phosphorus burning tower, a hydration tower, an absorption tower, a Venturi tube, a demister, an induced draft fan, a deaerator, an economizer, a dilute acid circulating tank, a phosphoric acid pump, and a feedwater pump. In consideration of the whole process system, fresh soft water is deoxidized after being heated by an upper head of the phosphorus burning tower and a gas guide tube, and the deoxidized water is then pumped into the economizer by a high-pressure pump to recover the heat of the hydration tower and then enters a steam pocket of the phosphorus burning tower to generate medium-high pressure steam. Therefore, unified recovery of the heat of a furnace-process phosphoric acid device is achieved, the medium-high pressure steam is generated, the effective energy is improved, a circulating cooling tower of the furnace-process phosphoric acid device is omitted, and the production system is efficient, energy-saving, environment-friendly, and green.
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2.发明申请公开(公告)号：US20230002693A1
公开(公告)日：2023-01-05
申请号：US17854140
申请日：2022-06-30
Applicant: Kunming University of Science and Technology , Zhejiang Chengtai Chemical Machinery Co., Ltd.
Inventor： Yi MEI , Chi ZHAI , Yunxiang NIE , Jinlin HE , Huili LIANG
IPC: C10J3/84 , C01B25/027
Abstract: Disclosed is a phosphorus coal gasification reaction device for combined production of yellow phosphorus and syngas, including a stock bin, a mineral aggregate lock hopper, a phosphorous coal gasification reactor, a slag quench chamber and a slag lock hopper. In the phosphorous coal gasification reactor, a drying zone, a dry distillation zone, a combustion zone, a phosphate rock reduction zone, and a slag bath zone are formed from top to bottom. A gas product outlet communicating with the phosphorous coal gasification reactor is installed at a top of the phosphorous coal gasification reactor, two to eight fuel burners are symmetrically arranged on the combustion zone, and an auxiliary burner communicating with the slag bath zone is arranged at the bottom of the slag bath zone. The reactor device can improve the production capacity of the yellow phosphorus, and reduce the emission of CO2.
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公开(公告)号：US20230002692A1
公开(公告)日：2023-01-05
申请号：US17853426
申请日：2022-06-29
Applicant: Kunming University of Science and Technology
Inventor： Yi MEI , Chi ZHAI , Yunxiang NIE , Jupei XIA , Delong XIE , Yuanzhi ZHU , Ping LONG
Abstract: A system for combined production of yellow phosphorous and syngas is disclosed. The air separation unit, the pulverized coal preparation unit and the mineral aggregate forming unit are respectively connected to a gas inlet and a top feeding port of the phosphorus coal gasifier; phosphorus-containing syngas obtained from phosphorus coal gasifier is connected to a gas inlet of the separating washing unit through an outlet of the phosphorous coal gasifier; Yellow phosphorus products and crude syngas are respectively output from the output port of the separating washing unit; and then the crude syngas is purified to obtain refined syngas. A slag discharge port at the bottom of the phosphorus coal gasifier is connected to an input port of a slag cold quenching unit. The system can improve the available energy of yellow phosphorous production, the production capacity of yellow phosphorus and the yield of syngas, and reduce CO2 emission.
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