Supercritical water reaction temperature control method, device and supercritical water reactor system

Abstract

The invention belongs to the supercritical water reaction field and relates to a supercritical water reaction temperature control method, a supercritical water reaction temperature control device and a supercritical water reactor system. With the supercritical water reaction temperature control method, the supercritical water reaction temperature control device and the supercritical water reactor system of the invention adopted, the temperature of a supercritical water reactor can be controlled quickly and accurately, and the stability and safety of the supercritical water reactor can be improved, and the defects of large temperature fluctuation range in a reactor as well as poor operational stability and safety of the reactor which are caused by a situation that external interference suffered by an oxygen loop is difficult to be avoided in the prior art can be eliminated. The supercritical water reaction temperature control method provided by the embodiment of the invention includes the following steps that: temperature T in a reactor is acquired, and deviation comparison is performed on the temperature T and preset temperature Tsp, and then, the parameter target value of the quantity of oxygen entering the reactor is obtained through a setting calculation model; and the parameter measurement value of the quantity of the oxygen entering the reactor is obtained through detection, if the parameter measurement value of the quantity of the oxygen is different from the parameter target value of the quantity of the oxygen, the quantity of the oxygen entering the reactor is adjusted according to the parameter target value.

Description

Technical field [0001] The invention relates to the field of supercritical water reaction, in particular to a supercritical water reaction temperature control method and device and a supercritical water reactor system. Background technique [0002] Supercritical water has the density, dissolving ability and good fluidity similar to liquids, and has high diffusion coefficient and low viscosity similar to gas. The characteristics of supercritical water are between liquid and gas. For example, supercritical water has great solubility for solutes, and can be completely miscible with various gases and various non-polar substances such as hexane, benzene and other organic substances. For example, supercritical water has a very high mass transfer rate, which is The gasification reaction is a homogeneous reaction with fast reaction rate and short time. The supercritical water treatment technology uses the characteristics of supercritical water to autothermally react organic matter with o...

AI Technical Summary

Problems solved by technology

[0003] The supercritical water is generally water at a temperature higher than 450° C. and a pressure higher than 22 MPa. During the process of organic matter being oxidized and decomposed, the flow rate of the oxidant plays a major role in the heat change of the supercritical water reaction. Maintaining a stable reaction temperature is a prerequisite for ensuring the normal and safe operation of the supercritical water treatment reactor. At present, in order to maintain the temperature stability of the supercritical water treatment reactor, it is usually achieved by controlling the temperature in the supercritical water treatment reactor. However, along with the change of material flow in the supercritical water reactor, the temperature in the supercritical water reactor changes thereupon. The temperature of the critical water reactor makes the temperature control in the supercritical water reactor untimely, has great hysteresis, and the external interference suffered in the oxygen circuit is relatively large, and then makes the temperature in the supercritical water reactor The fluctuation range is large, and it is difficult to guarantee the stability and safety of the supercritical water reactor

Images