CN212339262U

CN212339262U - Grate type plasma gasification melting furnace

Info

Publication number: CN212339262U
Application number: CN202021134142.4U
Authority: CN
Inventors: 谢新兵; 陈兵
Original assignee: Shandong Xinborun Environmental Technology Co ltd
Current assignee: Shandong Xinborun Environmental Technology Co ltd
Priority date: 2020-06-17
Filing date: 2020-06-17
Publication date: 2021-01-12
Anticipated expiration: 2030-06-17

Abstract

The utility model discloses a grate type plasma gasification melting furnace, including the feed inlet, be connected with on the feed inlet and preheat the drying zone, the exit linkage who preheats the drying zone has the burning zone, and the export that burns the zone is equipped with the burn-out district, and the export in burn-out district is equipped with the melting zone, is equipped with the discharge port on the melting zone, and the top in burning zone is equipped with the exhanst gas outlet. The utility model discloses well melting furnace has realized the regional separation of organic matter reaction and inorganic matter melting, each other does not influence, adjusts simply, and the operation is stable, and incineration disposal is thorough.

Description

Grate type plasma gasification melting furnace

Technical Field

The utility model belongs to the technical field of the melting furnace, concretely relates to grate type plasma gasification melting furnace.

Background

The existing plasma gasification melting furnace gasifies and melts solid waste in a furnace body, so that the process control difficulty is large, the incineration treatment of a grate furnace is not thorough, and organic matters in residues are not completely combusted.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a grate type plasma gasification melting furnace, incineration disposal is thorough.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a grate type plasma gasification melting furnace, includes the feed inlet, be connected with on the feed inlet and preheat the drying zone, the exit linkage who preheats the drying zone has burning zone, burning zone's export is equipped with the melting zone, be equipped with the discharge port on the melting zone, burning zone's top is equipped with the exhanst gas outlet.

Furthermore, the preheating and drying area, the burning area and the burnout area all convey materials through a mechanical grate.

Further, the temperature of the preheating and drying zone is set to be 500-600 ℃, the temperature of the incineration zone is set to be 800-1000 ℃, the temperature of the burn-out zone is set to be 900-1100 ℃, and the temperature of the melting zone is 1400-1600 ℃.

Furthermore, the mechanical fire grate adopts any one of a reverse-push type fire grate furnace, a forward-push type fire grate furnace or a reciprocating turnover type fire grate furnace.

Furthermore, the inner wall of the feeding hole is hinged with two oppositely arranged guide plates, a connecting cylinder is arranged below each guide plate, the shell of each connecting cylinder is hinged with the inner wall of the feeding hole, and the piston rod of each connecting cylinder is hinged with the corresponding guide plate.

Compared with the prior art, the beneficial effects of the utility model are that.

(1) The melting furnace realizes the separation of organic matter reaction and inorganic matter melting area, and has no mutual influence, simple regulation, stable operation and thorough incineration treatment.

(2) The retention time of the solid waste in the furnace can be realized by adjusting the mechanical fire grate moving structure.

Drawings

Fig. 1 is a schematic structural view of a grate-type plasma gasification melting furnace of the present invention.

FIG. 2 is a schematic view of the feed inlet.

In the figure: 1. a flue gas outlet; 2. a melting zone; 3. a burnout zone; 4. an incineration zone; 5. a preheating drying zone; 6. a feed inlet; 7. a plasma torch; 8. primary air; 9. secondary air; 10. tertiary air; 11. a slag discharge port; 12. connecting the cylinder; 13. a material guide plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The first embodiment.

Referring to fig. 1-2, the present invention provides a grate type plasma gasification melting furnace, which includes a feeding port 6, a preheating drying zone 5 connected to the feeding port 6, an incineration zone 4 connected to an outlet of the preheating drying zone 5, a burnout zone 3 provided at an outlet of the incineration zone 4, a melting zone 2 provided at an outlet of the burnout zone 3, a discharge port provided at the melting zone 2, and a flue gas outlet 1 provided above the incineration zone 4; the preheating and drying area 5, the burning area 4 and the burnout area 3 all convey materials through a mechanical grate.

The temperature of the preheating and drying area 5 is set to 500-; the preheating drying zone 5, the burning zone 4 and the burnout zone 3 can adopt a plasma torch 7, a natural gas burner and a diesel burner as combustion-supporting systems, and the melting zone 2 can adopt the plasma torch 7, a fluxing electrode and an immersion burner as heat sources.

The air distribution of the melting furnace is divided into primary air 8, secondary air 9 and tertiary air 10; the primary air 8 comprises a preheating drying area 5, an incineration area 4 and a burnout area 3, and the air distribution quantity is adjusted according to the area temperature; secondary air 9 enters through the plasma torch 7,decomposing the residual organic matters in the burnout zone 3 again; the tertiary air 10 is based on CO and H in the outlet flue gas₂、CH₄、O₂Adjusting the content of (A); whether the solid waste organic matters in the incineration area 4 adopt gasification reaction or oxidation reaction can be realized by adjusting primary air 8.

The mechanical fire grate can adopt any one of a reverse push type fire grate furnace, a forward push type fire grate furnace or a reciprocating turnover type fire grate furnace, and is selected according to the characteristics of solid waste water, ash content, heat value and the like.

The solid waste enters a mechanical grate of a preheating and drying area 5 through a feeding hole 6, the water in the solid waste is completely evaporated at the temperature of 500-600 ℃ in the area, the light component organic matter is cracked, and the volume of the solid waste is reduced at the moment; then moving to the mechanical grate in the incineration area 4 through the mechanical grate, and ensuring that organic matters in solid waste fully react by adjusting primary air 8 at the temperature of 800-1000 ℃ in the area, wherein oxidation reaction and reduction reaction exist in the process; then moving to a mechanical grate in the burnout zone 3 through the mechanical grate, wherein the temperature in the zone is higher than that in the incineration zone 4 by more than 100 ℃, so as to ensure the full cracking reaction of the refractory organic matters, and at the moment, the organic matters in the solid waste basically react completely; inorganic matters and heavy metals in the residual solid waste enter a melting zone 2, a plasma torch 7 and a fluxing electrode are arranged in the melting zone 2, under the input of energy of the plasma torch and the fluxing electrode, the temperature of the melting zone 2 is ensured to reach 1400-1600 ℃, at the temperature, the inorganic matters in the solid waste are completely melted to be changed into a liquid phase, and finally the liquid phase is discharged through a slag discharge port 11, and the discharged slag can be cooled by water or air to obtain a vitreous body or other building materials; gas generated in the reaction process in the furnace moves to the smoke outlet 1 under the action of outlet negative pressure, tertiary air 10 is arranged in the upper area of the smoke outlet 1, and CO and H in outlet smoke are regulated by the tertiary air 10₂、CH₄、O₂Waiting for gas components, and discharging the smoke which meets the requirements out of the furnace through the smoke outlet 1; different burners are arranged in different areas in the furnace, burners and plasma torches 7 are arranged in the preheating drying area 5, the burning area 4 and the burnout area 3 to provide energy, and the requirement of area temperature is met; the melting furnace realizes the separation of the organic matter reaction and the inorganic matter melting area 2 without mutual influence, and has simple adjustment and stable operation.

Example two.

The difference between the embodiment and the first embodiment is that two oppositely arranged material guide plates 13 are hinged to the inner wall of the feed port 6, a connecting cylinder 12 is arranged below each material guide plate 13, the shell of the connecting cylinder 12 is hinged to the inner wall of the feed port 6, a piston rod of the connecting cylinder 12 is hinged to the corresponding material guide plate 13, when materials are poured into the feed port 6, the piston rod of the connecting cylinder 12 contracts, the material guide plates 13 rotate downwards to open the feed port 6, the materials enter the feed port 6, the piston rod extends out after the materials are fed, and the material guide plates 13 close the feed port 6, so that the loss of heat from the feed port 6 is reduced; in addition, the connecting cylinder 12 can drive the material guide plate 13 to rotate back and forth, so that the blockage of the material at the material inlet 6 is avoided.

The preheating drying area, the burning area and the burnout area all convey materials through a mechanical grate, the temperature of the preheating drying area is set to be 550-plus-600 ℃, the temperature of the burning area is set to be 850-plus-950 ℃, the temperature of the burnout area is set to be 920-plus-1100 ℃, the melting area is 1450-plus-1580 ℃, and the mechanical grate can be any one of a reverse-push grate furnace, a forward-push grate furnace or a reciprocating-turning grate furnace.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a grate type plasma gasification melting furnace which characterized in that: the device comprises a feed inlet, wherein a preheating and drying area is connected to the feed inlet, an incineration area is connected to an outlet of the preheating and drying area, an burnout area is arranged at an outlet of the incineration area, a melting area is arranged at an outlet of the burnout area, a discharge port is arranged on the melting area, and a flue gas outlet is arranged above the incineration area.

2. The stoker-type plasma gasification melting furnace according to claim 1, wherein: the preheating and drying area, the burning area and the burnout area all convey materials through a mechanical grate.

3. The stoker-type plasma gasification melting furnace according to claim 1, wherein: the temperature of the preheating and drying zone is set to 500-600 ℃, the temperature of the incineration zone is set to 800-1000 ℃, the temperature of the burn-out zone is set to 900-1100 ℃, and the temperature of the melting zone is set to 1400-1600 ℃.

4. The stoker-type plasma gasification melting furnace according to claim 2, wherein: the mechanical fire grate adopts any one of a reverse-push type fire grate furnace, a forward-push type fire grate furnace or a reciprocating turnover type fire grate furnace.

5. The stoker-type plasma gasification melting furnace according to claim 1, wherein: the inner wall of the feeding hole is hinged with two oppositely arranged guide plates, a connecting cylinder is arranged below each guide plate, a shell of each connecting cylinder is hinged with the inner wall of the feeding hole, and a piston rod of each connecting cylinder is hinged with the corresponding guide plate.