Piston supercharged material steam explosion method and device

A material and steam explosion technology, which is applied in the field of steam explosion devices, can solve the problems in the field of waste stabilization treatment that is difficult to apply, the steam explosion temperature and pressure cannot be controlled separately, and the application range of steam explosion technology can be reduced, so as to enrich the types of energy utilization , Overcoming incomplete unloading of materials, reducing energy consumption and economic costs

Inactive Publication Date: 2011-05-18
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the existing steam explosion technology, the steam explosion pressure is achieved by blowing high-pressure gas (or steam), which consumes a lot of energy, and the material temperature is completely provided by high-temperature and high-pressure steam, and other low-grade energy cannot be used, such as hot water and heat transfer oil.
Moreover, the temperature and pressure of the material are limited by the steam, and the temperature of the material increases with the increase of the steam pressure. The steam explosion temperature and pressure cannot be controlled separately, and it is impossible to achieve low temp

Method used

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  • Piston supercharged material steam explosion method and device
  • Piston supercharged material steam explosion method and device
  • Piston supercharged material steam explosion method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A piston pressurized material steam explosion method, the steps are as follows:

[0026] Step 1: Feed the material into the tank from the feed port of the tank, and inject steam explosion gas into the tank after closing the feed port,

[0027] Step 2 When the material is heated to the steam explosion temperature, push the pressurized piston in the tank to compress the material, so that the tank can be boosted to the steam explosion pressure,

[0028] Step 3 Quickly release the pressure to make the material expand, burst and discharge,

[0029] In this embodiment, the discharge in step 3 is by pushing the booster piston, so that the pulverized material is discharged from the discharge port.

Embodiment 2

[0031] A device for implementing the above piston pressurized material steam explosion method, comprising a tank body 2, a steam inlet 7, a feed port 3 and a discharge port 4 on the tank body 2, and a steam inlet 7 and a discharge port 4 respectively A valve is provided, and a booster piston 1 is arranged in the tank body 2 , the feed port 3 is adjacent to the booster piston 1 at the starting position, and the valve at the discharge port 4 is a quick-open valve 5 .

Embodiment 3

[0033] Another device for implementing the above-mentioned piston pressurized material steam explosion method, comprising a tank body 2, a booster piston 1 is arranged in the tank body 2, and a gap between the initial position of the booster piston 1 and the closed end 6 of the tank body A heating jacket 8, a feed port 3 and a discharge port 4 are arranged on the tank body, a heating medium inlet 9 and a heating medium outlet 10 are provided on the heating jacket 8, and a heating medium inlet 9, a heating medium outlet 10 and a discharge port 4 are respectively provided with valves, the feed port 3 is adjacent to the booster piston 1 at the initial position, and the valve at the discharge port 4 is a quick-open valve 5. In this embodiment, the material is heated indirectly .

[0034] Below with reference to accompanying drawing, the present invention is described in more detail:

[0035] refer to figure 1 , a piston pressurized steam explosion device, which includes a pressu...

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PUM

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Abstract

The invention provides a piston supercharged material steam explosion method, comprising the following steps: feeding materials into a tank from the feed inlet of the tank, and introducing a steam explosion gas into the tank after the feed inlet is closed; when the materials are heated to a steam explosion temperature, pushing a supercharged piston in the tank to compress the materials, so that the tank is boosted to the steam explosion pressure; fast relieving the pressure so as to expand and crush the materials; and discharging the materials. The invention also provides a steam explosion device, comprising the tank, wherein the tank is internally provided with the supercharged piston; the tank between the initial position of the supercharged piston and the closed end of the tank is provided with a heating jacket, the feed inlet and a discharge outlet; the heating jacket is provided with the inlet and the outlet of a heating medium; and the inlet and the outlet of the heating medium and the discharge outlet are respectively provided with a valve.

Description

technical field [0001] The invention relates to a steam explosion device, in particular to a pretreatment device which adopts a pressurized piston to increase the steam explosion pressure of materials, and instantly opens a pressure relief piston or a quick-opening valve to generate a steam explosion effect, thereby performing steam explosion or puffing on materials. Background technique [0002] Steam explosion (referred to as "steam explosion") technology began in 1926, mainly for the production of man-made fiberboard, and since the 1970s, it has been widely used in the production of animal feed and the extraction of ethanol and specialty chemicals from wood fibers. The material is heated to 180-235°C with steam, after a period of pressure maintenance, the pressure is suddenly released and the gas phase medium in the pores of the material is sprayed out, and the high-pressure liquid water quickly boils to form a flash, and works externally, resulting in a "blasting" effect ...

Claims

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Application Information

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IPC IPC(8): B01J3/00B02C19/00
Inventor 葛仕福赵培涛葛剑
Owner SOUTHEAST UNIV
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