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

IPC: C01B25/12 ,  F27D17/00 ,  C01B25/20

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.

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

IPC: C10J3/84 ,  C01B3/02 ,  C01B3/52 ,  C01B25/00 ,  C01B25/047 ,  C10J3/52

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.