Unlock instant, AI-driven research and patent intelligence for your innovation.

Supercritical reaction device and technological process thereof

A reaction device and supercritical technology, which is applied in the chemical method, feeding device, separation method and other directions of reacting liquid and gas medium, can solve the problems of clogging and slagging of the device, and cannot effectively solve the problems of solid entrainment of reaction products, etc. The effect of solids entrainment reduction

Active Publication Date: 2014-07-16
ENN SCI & TECH DEV
View PDF6 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the supercritical water oxidation reactor is equipped with a heater, the reaction products in the reactor will accumulate on the heater, which will cause blockage and slagging inside the device
In addition, the existing supercritical reaction device cannot effectively solve the problem of solid entrainment in the reaction product

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Supercritical reaction device and technological process thereof
  • Supercritical reaction device and technological process thereof
  • Supercritical reaction device and technological process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Adopt the supercritical reaction device of the present invention to carry out supercritical water gasification reaction, the Yunnan lignite coal water slurry that concentration is 30% reaches 25MPa, 400 ℃ after pressurization and preliminary preheating, and oxidant utilizes oxygen, and the pressure of oxygen is 26~ 28MPa, normal temperature oxidant and high temperature and high pressure coal water slurry enter the supercritical reaction device from the bottom of the transport bed, the amount of oxidant added is 4% of the chemical oxygen demand of coal in the raw material, the reaction temperature is 700°C, and the reaction pressure is 25MPa , the reaction residence time is 4min, the reaction product is discharged from the reaction product outlet 3 at the top of the supercritical reaction device, and then enters the heat exchanger 5 for preliminary cooling and cooling, and the product temperature is reduced to 360 ° C. At this time, the supercritical water is converted int...

Embodiment 2

[0047] The supercritical water oxidation reaction is carried out by using the supercritical reaction device of the present invention, and the raw material is prepared from municipal sludge with a concentration of 12%. After the slurry is pressurized and preheated, it reaches 30MPa and 480°C. The oxidant uses air, and the pressure of the air is 32-35MPa. The high-pressure slurry enters the supercritical reaction device from the bottom of the transport bed. The amount of the primary oxidant added is 90% of the chemical oxygen demand of the carbon-containing substances in the slurry on a dry basis, and the amount of the secondary oxidant added is 90% of the carbon-containing substances in the slurry on a dry basis. 20% of the chemical oxygen demand, the reaction temperature is 600°C, and the reaction residence time is 3min. After the reaction product is discharged from the reaction product outlet 3 at the top of the supercritical reaction device, the temperature drops to 330°C aft...

Embodiment 3

[0049] The supercritical water gasification reaction is carried out by using the supercritical reaction device of the present invention. The Ordos bituminous coal water slurry with a concentration of 40% reaches 22.1MPa and 370°C after pressurization and preliminary preheating. The oxidant uses oxygen, and the pressure of oxygen is 23 ~25MPa, the oxidant at room temperature and high-temperature and high-pressure coal-water slurry enter the supercritical reaction device from the bottom of the transport bed, the amount of oxidant added is 5% of the chemical oxygen demand of coal in the raw material, the reaction temperature is 750°C, and the reaction pressure is 22.1 MPa. The reaction product is discharged from the reaction product outlet 3 at the top of the supercritical reaction device and then enters the heat exchanger 5 for preliminary cooling. The temperature of the product is reduced to 350°C, and the supercritical water is converted into liquid water at this time. The pro...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a supercritical reaction device. The supercritical reaction device comprises a reaction cavity (1), wherein one end of the reaction cavity (1) is provided with a material inlet (2), the other end of the reaction cavity (1) is provided with a reaction product outlet (3), the reaction product outlet (3) is communicated with a material inlet of a cyclone separation device (4), the reaction cavity (1) is of a hollow structure, and a pipeline for communicating the reaction product outlet (3) with the cyclone separation device (4) is serially connected with a heat exchanger (5). The technological process comprises the following steps of feeding reaction raw materials into the reaction device and reacting in the reaction cavity at a given temperature and pressure condition; discharging the reaction product formed in the reaction process through the reaction product outlet, and feeding the reaction product into the heat exchanger for cooling; and feeding the cooled reaction product into the cyclone separation device and separating to obtain the methane-containing gas product. By adopting the supercritical reaction device, the blocking and slagging in the reaction process can be avoided, and the solid carried in the reaction product can be effectively reduced.

Description

technical field [0001] The invention relates to a supercritical reaction device and a process method thereof. Background technique [0002] Supercritical Water (SCW for short) refers to water in a special state whose temperature and pressure are both higher than its critical point (Tc=374.15°C, Pc=22.12MPa). Water has special properties in the supercritical state, its dielectric constant is close to that of organic solvents, it has high diffusion coefficient and low viscosity, and it is a good reaction medium. SCW can completely dissolve with organic matter, oxygen, nitrogen, etc., and undergo a homogeneous reaction, which eliminates the mass transfer resistance between the phase interfaces, accelerates the mass transfer rate, and greatly shortens the reaction time. [0003] In the prior art, most supercritical water reaction devices are kettle type, tubular type, evaporation wall / permeation wall type. For example, the Chinese invention patent with publication number 10250...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B01J7/00B01J3/00B01J4/00B01J10/00B01D45/12C10J3/46C10J3/48C10J3/84
CPCY02P20/54
Inventor 李金来程乐明王青宋成才高志远
Owner ENN SCI & TECH DEV