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Domestic waste gasification device and process

A technology for domestic waste and gasification device, which is applied in the gasification of granular/powdered fuel, petroleum industry, and the manufacture of combustible gas, etc. The effect of saving treatment costs, simplifying the overall process, and eliminating exhaust gas

Inactive Publication Date: 2019-05-03
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the combustible gas in the furnace of this device is dried and filtered, and then directly passed into the furnace, which may easily cause a rapid increase in local pressure, or even cause an explosion; at the same time, a large amount of water vapor evaporated at high temperature is sent to the reduction zone, resulting in excessive moisture in the reduction zone. Not conducive to the reduction reaction

Method used

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  • Domestic waste gasification device and process
  • Domestic waste gasification device and process
  • Domestic waste gasification device and process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as figure 1 Shown is an embodiment of a domestic waste gasification device, including a gasifier 1 with a drying zone 11, a pyrolysis zone 12, a reduction zone 13, an oxidation zone 14, and an ash zone 15 from top to bottom; The top is provided with a feed port 16 for domestic garbage to enter, the bottom of the gasifier 1 is provided with an ash outlet 17, and the side wall of the gasifier 1 is provided with a gasification gas outlet 18, and the domestic garbage enters the drying zone 11 and the pyrolysis zone in turn. 12. The ash obtained after treatment in the reduction zone 13 and the oxidation zone 14 is discharged through the ash zone 15 through the ash outlet 17 and the obtained gasification gas is discharged from the gasification gas outlet 18; the junction of the oxidation zone 14 and the ash zone 15 A fire grate 2 is provided at the center, and a flashback device 3 that can dry and filter the gas is connected between the drying area 11 and the ash area 15...

Embodiment 2

[0035] This embodiment is an embodiment of the domestic waste gasification process, comprising the following steps:

[0036] S10. Domestic garbage enters the gasifier 1 through the feed port 16, and the moisture in the domestic garbage evaporates into water vapor in the drying zone 11;

[0037] S20. The domestic waste dried and processed in step S10 enters the pyrolysis zone 12 and the reduction zone 13 for pyrolysis and gasification reactions to produce combustible gas;

[0038] S30. The domestic garbage after the pyrolysis and gasification reaction in step S20 sinks into the oxidation zone 14, burns in the oxidation zone 14, and the heat generated by the combustion rises to supply the heat required for the reduction zone 13, the pyrolysis zone 12 and the drying zone 11, The ash produced by combustion enters the ash zone 15;

[0039] S40. The ash in the ash area 15 in step S30 is discharged through the ash outlet 17.

[0040] The domestic waste pyrolysis gasification reacti...

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Abstract

The invention relates to the technical field of humidity regulation, more particularly to a domestic waste gasification device and a process. The domestic waste gasification device comprises a gasification furnace; a material inlet is arranged at that top of the gasification furnace, an ash-slag outlet is arranged at the bottom of the gasification furnace, a gasification gas outlet is arranged atthe side wall of the gasification furnace, and domestic garbage enters a drying zone, a pyrolysis zone, a reduction zone and an oxidation zone in turn for treatment, so that the obtained ash-slag is discharged through the ash-slag outlet and the obtained gasification gas is discharged through the gasification gas outlet; a fire grate is arranged at the junction of the oxidation zone and the ash-slag zone, a backdraft device for drying and filtering the gas is communicated between the drying zone and the ash-slag zone, the backdraft device is provided with a backdraft suction port communicatingwith the drying zone and a backdraft air outlet communicating with the ash-slag zone, the backdraft air outlet is arranged below the grate, and an igniter is arranged besides the side of the backdraft air outlet. The invention extracts the mixed gas at the top of the gasification furnace, dries and removes water vapor, thereby facilitating the continuous gasification reaction of the gasificationfurnace; the gasified gas after filtration and purification is ignited and then enters the furnace to effectively avoid the deflagration phenomenon.

Description

technical field [0001] The invention relates to the technical field of humidity adjustment, and more specifically, to a domestic waste gasification device and process. Background technique [0002] Most of the domestic waste in our country has a high moisture content, and it is often necessary to dry the domestic waste to reduce the moisture content before performing pyrolysis and gasification treatment. At present, the domestic waste pyrolysis gasification treatment device is mainly researched on the structure of the gasifier, and the gasifier is innovated to obtain a better treatment effect. Without fuel assistance, the existing domestic waste gasification treatment system can intelligently and directly process domestic waste with low water content, while adding fuel to assist the treatment of domestic waste with high water content will increase the processing cost and cannot ensure the response went smoothly. [0003] Some applicants adopted a fixed-bed furnace-type gar...

Claims

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Application Information

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IPC IPC(8): C10J3/72C10J3/82C10J3/20C10J3/54
Inventor 吴永明黎国栋
Owner GUANGDONG UNIV OF TECH
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