公开(公告)号：US09328008B2

公开(公告)日：2016-05-03

申请号：US14396732

申请日：2012-12-05

Applicant: XI'AN JIAOTONG UNIVERSITY

Inventor： Shuzhong Wang ,  Donghai Xu ,  Xingying Tang ,  Yanmeng Gong ,  Jie Zhang ,  Yuzhen Wang

IPC: C02F11/08 ,  C02F1/38 ,  C02F9/00 ,  C02F1/20 ,  C02F5/00 ,  C02F1/52 ,  F25J1/00

CPC classification number: C02F11/086 ,  C02F1/20 ,  C02F1/385 ,  C02F5/00 ,  C02F9/00 ,  C02F11/08 ,  C02F2001/5218 ,  F25J1/0002

Abstract: A supercritical water oxidation treatment system for organic wastewater with a high salinity crystallizes high-salinity wastewater by a low temperature of liquid oxygen, and decreases an inorganic salt content in the wastewater. Under supercritical water conditions, a hydrocyclone (4) separates most precipitated solid salts in the wastewater, so effectively prevents pipes and the tubular reactor (22) after the hydrocyclone (4) from plugging. Inorganic salts are able to be continuously separated from the system by the hydrocyclone (4) at the bottom of a desalination device, In addition, excess oxygen and gaseous products CO2 are recovered by a separation recovery part. The reaction time and the reaction temperature of supercritical water oxidation reaction are lowered due to the installation of a simple post-treatment unit (37). Moreover, the heat of the reactor effluent with a high temperature is recovered in the system, so operation cost of the system is reduced evidently.

公开(公告)号：US20170266613A1

公开(公告)日：2017-09-21

申请号：US15611755

申请日：2017-06-01

Applicant: XI'AN JIAOTONG UNIVERSITY

Inventor： Shuzhong Wang ,  Mengmeng Ren ,  Xingying Tang ,  Jie Zhang ,  Yuzhen Wang ,  Yanhui Li

IPC: B01D53/78 ,  B01J19/24

CPC classification number: B01J3/008 ,  B01J2219/00054 ,  B01J2219/00103 ,  Y02P20/544

Abstract: An intermediate medium heat exchanging device for a supercritical water oxidation system includes a material main loop, an intermediate medium loop and a replenishment branch. A material pump, a preheater, a spray type desuperheater, a reactor and a regenerator are connected in sequence to form the material main loop; a buffer tank, a circulating pump, the regenerator, the preheater and a water cooler form the intermediate medium loop. A back pressure valve is located above the buffer tank. The replenishment branch includes a cooling water pump, an outlet of the cooling water pump is divided into two sub-branches, one sub-branch is connected with the spray type desuperheater, and another sub-branch is connected with the buffer tank. The intermediate medium heat exchanging device is reasonable in structural design, and is able to maximally reduce the investment cost and ensure the stable operation of the system.

公开(公告)号：US10307720B2

公开(公告)日：2019-06-04

申请号：US15611755

申请日：2017-06-01

Applicant: XI'AN JIAOTONG UNIVERSITY

Inventor： Shuzhong Wang ,  Mengmeng Ren ,  Xingying Tang ,  Jie Zhang ,  Yuzhen Wang ,  Yanhui Li

IPC: B01J3/00 ,  B01J19/02 ,  B01J19/24

Abstract: An intermediate medium heat exchanging device for a supercritical water oxidation system includes a material main loop, an intermediate medium loop and a replenishment branch. A material pump, a preheater, a spray desuperheater, a reactor and a regenerator are connected in sequence to form the material main loop; a buffer tank, a circulating pump, the regenerator, the preheater and a water cooler form the intermediate medium loop. A back pressure valve is located above the buffer tank. The replenishment branch includes a cooling water pump, an outlet of the cooling water pump is divided into two sub-branches, one sub-branch is connected with the spray desuperheater, and another sub-branch is connected with the buffer tank. The intermediate medium heat exchanging device is reasonable in structural design, and is able to maximumlly reduce the investment cost and ensure the stable operation of the system.

公开(公告)号：US20170297941A1

公开(公告)日：2017-10-19

申请号：US15642335

申请日：2017-07-06

Applicant: XI'AN JIAOTONG UNIVERSITY ,  XI'AN ENERGY AND ENVIRONMENT TECHNOLOGIES CO., LTD.

Inventor： Shuzhong Wang ,  Yanhui Li ,  Jianqiao Yang ,  Xingying Tang ,  Jie Zhang ,  Yuzhen Wang ,  Tuo Zhang

IPC: C02F11/08 ,  C02F1/72

CPC classification number: C02F11/086 ,  B01D1/0047 ,  B01D1/0082 ,  B01D1/02 ,  B01D3/10 ,  C02F1/727 ,  C02F2209/02 ,  C02F2209/03 ,  C02F2209/40

Abstract: An indirect heat transfer supercritical water oxidation system includes a supercritical water oxidation reactant system and an intermediate medium circuit. A control method thereof includes controlling two-process pressure and temperature increase, controlling pressure and temperature decrease and controlling normal operation. The present invention focuses on automatic control strategy of engineering practice of the indirect heat transfer supercritical water oxidation system. The system heating process adopts the idea of circulating heating, which effectively reduces the investment of the heating equipment avoids the mismatch between the working pressure of the two processes, and ensures effectiveness of the heat transfer between supercritical pressure fluid in the inner tube and the outer tube of the preheater/heat exchanger during subsequent heating process. The effective control of a reaction temperature and overpressure protection of critical equipment ensure a process effect and system safety.

公开(公告)号：US20150128642A1

公开(公告)日：2015-05-14

申请号：US14396732

申请日：2012-12-05

Applicant: XI'AN JIAOTONG UNIVERSITY

Inventor： Shuzhong Wang ,  Donghal Xu ,  Xingying Tang ,  Yanmeng Gong ,  Jie Zhang ,  Yuzhen Wang

IPC: F25J1/00

CPC classification number: C02F11/086 ,  C02F1/20 ,  C02F1/385 ,  C02F5/00 ,  C02F9/00 ,  C02F11/08 ,  C02F2001/5218 ,  F25J1/0002

Abstract: A supercritical water oxidation treatment system for organic wastewater with a high salinity crystallizes high-salinity wastewater by a low temperature of liquid oxygen, and decreases an inorganic salt content in the wastewater. Under supercritical water conditions, a hydrocyclone (4) separates most precipitated solid salts in the wastewater, so effectively prevents pipes and the tubular reactor (22) after the hydrocyclone (4) from plugging. Inorganic salts are able to be continuously separated from the system by the hydrocyclone (4) at the bottom of a desalination device, In addition, excess oxygen and gaseous products CO2 are recovered by a separation recovery part. The reaction time and the reaction temperature of supercritical water oxidation reaction are lowered due to the installation of a simple post-treatment unit (37). Moreover, the heat of the reactor effluent with a high temperature is recovered in the system, so operation cost of the system is reduced evidently.

Abstract translation: 高盐度有机废水的超临界水氧化处理系统通过液氧低温结晶高盐度废水，降低废水中的无机盐含量。 在超临界水条件下，水力旋流器（4）分离废水中大部分沉淀固体盐，从而有效地防止水力旋流器（4）堵塞后的管道和管式反应器（22）。 无机盐能够通过脱盐装置底部的水力旋流器（4）与系统连续分离。此外，过量的氧气和气态产物CO 2通过分离回收部分回收。 由于安装简单的后处理单元（37），超临界水氧化反应的反应时间和反应温度降低。 此外，系统中回收了具有高温的反应器流出物的热量，因此系统的运行成本明显降低。