US 10,519,043 B2Granted

Control system for decreasing pressure of supercritical water system and method thereof

AssigneesXi'an Jiaotong University, Xi'an Wonfu Energy and Environment Technologies Co., Ltd.

InventorsShuzhong Wang, Jie Zhang, Laisheng Wang, Xingying Tang, Yanhui Li, Jianqiao Yang

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Abstract

A control system for decreasing pressure of a supercritical water system and a method therefor is provided, mainly including: a resistance water storage tank, a resistance pump, a capillary negative booster, a back pressure valve, a regulating valve and related stop valves. By switching the back pressure valve branch and the capillary negative booster branch, the pressure regulation is achieved while starting the system, closing down and in normal operation. The present invention is capable of achieving precisely controlling pressure of the system on the basis of effectively preventing problems exists in the solid particle materials pressure decreasing process such as abrasion and clogging of the internal elements of the valve. In addition, the back pressure valve branch is capable of reducing the operation complexity in the starting and shutdown process of the system, and the operation reliability is improved.

Claims5

Dependent claims

A control system for decreasing pressure of a supercritical water system, comprising:

a capillary branch, a water resistance branch and a back pressure valve branch, wherein the back pressure valve is connected in parallel with the capillary branch;
wherein a fluid outlet of a supercritical water reactor (1) is connected with the capillary branch, an outlet of the capillary branch is a fluid outlet;
an outlet of the water resistance branch is connected with a pipe in front of an inlet of the capillary branch;
wherein the water resistance branch comprises a resistance water storage tank (3), an outlet of the resistance water storage tank (3) is connected with a resistance pump (4) and a first stop valve (5) in sequence;
wherein an outlet of the first stop valve (5) is connected with the inlet of the capillary branch;
wherein the capillary branch comprises:
a second stop valve (6), a capillary negative booster (9) and a regulating valve (10), wherein the second stop valve (6), the capillary negative booster (9) and the regulating valve (10) are connected in series;
an inlet of the second stop valve (6) is connected with the fluid outlet of the supercritical water reactor (1);
and an outlet of the regulating valve (10) is a fluid outlet.

6 more elements

Dependencies are inferred from the claim text.