CN215062080U

CN215062080U - Plasma preheating and incineration and cracking integrated furnace for continuously treating waste salt

Info

Publication number: CN215062080U
Application number: CN202120348788.0U
Authority: CN
Inventors: 国兴; 杨安凯; 陈梓元
Original assignee: Shandong Oka Environmental Protection Engineering Co ltd
Current assignee: Shandong Oka Environmental Protection Engineering Co ltd
Priority date: 2021-02-08
Filing date: 2021-02-08
Publication date: 2021-12-07
Anticipated expiration: 2031-02-08

Abstract

The to-be-solved problem of the utility model is to provide a plasma of continuous processing waste salt preheats and burns schizolysis integrative stove, realizes preheating hopper and furnace body integrated design, and the material is preheated to the heat in the make full use of furnace body, and guarantees that waste salt fully burns the schizolysis. The plasma furnace comprises a furnace body which is transversely distributed, wherein a feeding screw capable of stirring and propelling materials is arranged in the furnace body along the length direction of the furnace body, a preheating hopper and a plurality of plasma generators are arranged above the feeding screw in the furnace body, and all the plasma generators are positioned at the rear side of the preheating hopper; the preheating device is characterized in that a stirring shaft capable of rotating and stirring materials is arranged in the preheating hopper, the outer wall of the top of the furnace body is communicated with the feeding hopper of the preheating hopper, and the rear side wall of the furnace body is provided with a discharge door.

Description

Plasma preheating and incineration and cracking integrated furnace for continuously treating waste salt

Technical Field

The utility model relates to a useless field of handling of danger, concretely relates to plasma of continuous processing waste salt preheats and burns schizolysis integrative stove.

Background

The industrial waste salt refers to various waste residues, dust and other wastes discharged in the industrial production process. In the industrial field, a plurality of enterprises generate waste salt in the production process. For example, in the production process of organic and inorganic chemical products, a large amount of salt-containing organic matter mixed waste salt is generated, and the crystallized salt contains a large amount of organic or inorganic impurities and cannot be used as industrial raw material salt. If the materials are piled for a long time, a large amount of fields are occupied, and serious pollution and damage are caused to the ecological environment.

At present, the resource conversion of industrial waste salt is generally adopted: one is a chemical method, the other is a high-temperature pyrolysis method, the chemical method is adopted for resource treatment, the process route is long, the investment is large, and the production cost is high. The high-temperature pyrolysis method is adopted, the process route is short, the production cost is low, the investment is low, the process flow meets the environmental protection requirement, and the industrial direction of the domestic industrial waste salt recovery and resource utilization is met.

Plasma incineration pyrolysis and plasma vitrification are the best choice for thoroughly treating hazardous waste. The temperature of the plasma torch is far higher than that of other incinerating devices, and the high temperature can quickly gasify and crack harmful substance molecules in the dangerous waste and finally form a vitreous body, so that the aim of thorough treatment is fulfilled. Although there is plasma incineration pyrolysis furnace of handling waste salt at present, when handling waste salt, need put into preheating hopper heating stirring with waste salt, then get into plasma incineration pyrolysis furnace and burn the schizolysis, nevertheless preheating hopper is split type, not only individual area occupied, need utilize extra heat source to heat in addition, leads to very inconvenient.

SUMMERY OF THE UTILITY MODEL

The to-be-solved problem of the utility model is to provide a plasma of continuous processing waste salt preheats and burns schizolysis integrative stove, realizes preheating hopper and furnace body integrated design, and the material is preheated to the heat in the make full use of furnace body, and guarantees that waste salt fully burns the schizolysis.

The utility model discloses a realize through following technical scheme:

a plasma preheating and incineration and cracking integrated furnace for continuously treating waste salt comprises a furnace body which is transversely distributed, wherein a feeding screw capable of stirring and propelling materials is arranged in the furnace body along the length direction of the furnace body, a preheating hopper and a plurality of plasma generators are arranged above the feeding screw in the furnace body, and all the plasma generators are positioned on the rear side of the preheating hopper;

the preheating device is characterized in that a stirring shaft capable of rotating and stirring materials is arranged in the preheating hopper, the outer wall of the top of the furnace body is communicated with the feeding hopper of the preheating hopper, and the rear side wall of the furnace body is provided with a discharge door.

Further, a spiral conveyor is arranged between the preheating hopper and the feeding screw, the rear end of the spiral conveyor is a feed inlet and communicated with a discharge outlet of the preheating hopper, and the front end of the spiral conveyor is a discharge outlet communicated with the front end of the feeding screw.

Furthermore, the feeding screw comprises a first rotating shaft, the screw conveyor comprises a second rotating shaft, and the front ends of the first rotating shaft and the second rotating shaft extend to the outside of the furnace body and are driven by two variable speed motors to rotate respectively; the upper end of the stirring shaft extends to the outside of the furnace body and is driven to rotate by a stirring motor.

Furthermore, the upper end of the discharge door is hinged to the rear side wall of the furnace body, and the outer wall of the discharge door is provided with a balancing weight.

Further, the rotating speed of the feeding screw is 6-10 revolutions per minute, and the pushing speed is set to be 2-5 cm per minute; the inner side of the bottom of the furnace body is an arc-shaped surface matched with the feeding spiral.

Further, the power of the plasma generator is 3-5kw, and the arrangement density is 3-6 counts/square decimeter; the distance between the plasma generator and the material is maintained between 7 and 10 centimeters; the temperature in the furnace body is 600-1200 ℃.

Compared with the prior art, the utility model the beneficial effect who gains as follows:

1. the preheating hopper is arranged in the furnace body, the heat of the plasma generator is utilized to preheat the materials in the preheating hopper, and the stirring shaft can stir the materials to ensure that the materials are uniformly heated; the preheating hopper and the furnace body are integrated, energy is saved, and the occupied area is small;

the preheated waste salt enters the furnace body, is spirally propelled and stirred under the action of the feeding screw, and in the process of propelling to the rear end of the furnace body, the plasma generator above generates high-temperature flame to incinerate and crack the waste salt, wherein the incineration and cracking are a continuous process and are fully incinerated and reduced;

2. the spiral feeder has the effects that the waste salt in the preheating hopper is further stirred and then is fed to the front end of the feeding spiral, so that the stirring process is greatly improved, and the waste salt is uniformly stirred;

3. the utility model discloses adapt to industry waste salt incineration disposal, compact structure uses easy maintenance, is worth promoting in this field.

Drawings

FIG. 1 is a schematic view of the plasma preheating and incineration cracking integrated furnace of the present invention;

in the figure: 1. the device comprises a furnace body, 2, a feeding screw, 21, a first rotating shaft, 3, a preheating hopper, 4, a screw conveyor, 41, a second rotating shaft, 5, a feeding hopper, 6 and a plasma generator.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present invention, it is to be understood that the terms "front", "back", "left", "right", "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

As shown in FIG. 1, the present embodiment discloses a plasma preheating and incineration and cracking integrated furnace for continuously treating waste salt, which comprises a furnace body 1, a feeding screw 2, a preheating hopper 3 and a screw conveyor 4. The furnace body 1 is transversely and lengthily distributed, and a high-temperature resistant furnace chamber is arranged in the furnace body 1. The feed screw 2 comprises a first rotating shaft 21, and the front and rear ends of the first rotating shaft 21 are rotatably mounted on the front and rear side walls of the furnace body 1 through bearing assemblies. The preheating hopper 3 is arranged in the furnace body 1 and is positioned above the feeding screw 2, a stirring shaft capable of stirring materials is arranged in the preheating hopper 3 in a rotating way, the upper end of the stirring shaft extends to the outside of the furnace body 1 and is driven to rotate by a stirring motor, a feeding hopper 5 communicated with the preheating hopper 3 is arranged on the outer wall of the top of the furnace body 1,

the spiral feeder 4 is arranged between the preheating hopper 3 and the feeding screw 2, the rear end of the spiral feeder 4 is a feeding hole and communicated with a discharging hole of the preheating hopper 3, and the front end of the spiral feeder 4 is a discharging hole which is downwards aligned with the front end of the feeding screw 2. The screw conveyor 4 includes a second rotating shaft 41, and the front ends of the first rotating shaft 21 and the second rotating shaft 41 extend to the outside of the furnace body 1 and are driven to rotate by two variable speed motors, respectively. Under the action of the variable speed motor, the rotating speed of the feeding screw 2 is 6-10 revolutions per minute, the materials can be pushed towards the rear end of the furnace body 1 while being uniformly stirred, and the pushing speed of the feeding screw 2 is within the range of 2-5 centimeters per minute. The inner side of the bottom of the furnace body 1 is an arc-shaped surface matched with the feeding screw 2, so that the stirring and propelling effects of the feeding screw 2 are greatly improved.

A plurality of plasma generators 6 are arranged on the inner top wall of the furnace body 1, and all the plasma generators 6 are positioned above the feeding screw 2 and are positioned at the rear side of the preheating hopper 3. The arrangement density of the plasma generator 6 is 2-3 counts/square decimeter, and the distance between the plasma generator 6 and the material is maintained between 7-10 cm. The power of each plasma generator 6 is 3-5kw, so that the temperature in the furnace body 1 can reach 600-1200 ℃. The back lateral wall of furnace body 1 articulates there is the bin gate 7 that can upwards overturn and open, is equipped with the balancing weight at the outer wall of bin gate 7, and so design when the rear end material of furnace body 1 piles up the certain degree, bin gate 7 is opened.

The plasma of continuous processing waste salt preheats and burns the specific working process of schizolysis integrated furnace as follows:

the furnace body starts preheating operation, industrial waste salt enters a preheating hopper from a feed hopper, and the stirring shaft stirs the waste salt and heats the waste salt by means of heat in the furnace body. The preheating and stirring waste salt is conveyed to the front end of the feeding screw through the spiral conveyor, the waste salt is gradually pushed to the rear end of the furnace body while being uniformly stirred along with the rotation of the feeding screw, the rotating speed of the spiral stirring is set to be 6-10 rpm, the pushing speed is set to be 2-5 cm/min, meanwhile, the plasma generator above generates high-temperature flame to burn and crack the waste salt, the burning and cracking are continuous processes, and the burning and cracking are fully reduced.

Claims

1. A plasma preheating and incineration and cracking integrated furnace for continuously treating waste salt comprises a furnace body which is transversely distributed, and is characterized in that a feeding screw capable of stirring and propelling materials is arranged in the furnace body along the length direction of the furnace body, a preheating hopper and a plurality of plasma generators are arranged above the feeding screw in the furnace body, and all the plasma generators are positioned at the rear side of the preheating hopper;

2. The plasma preheating, incineration and cracking integrated furnace as claimed in claim 1, wherein a screw conveyor is arranged between the preheating hopper and the feeding screw, a rear end of the screw conveyor is a feeding hole and communicated with a discharging hole of the preheating hopper, and a front end of the screw conveyor is a discharging hole communicated with a front end of the feeding screw.

3. The plasma preheating and incineration and cracking integrated furnace as claimed in claim 2, wherein the feeding screw includes a first rotating shaft, the screw conveyor includes a second rotating shaft, and front ends of the first rotating shaft and the second rotating shaft extend to the outside of the furnace body and are respectively driven to rotate by two variable speed motors; the upper end of the stirring shaft extends to the outside of the furnace body and is driven to rotate by a stirring motor.

4. The plasma preheating and incineration and cracking integrated furnace as claimed in claim 3, wherein the upper end of the discharge gate is hinged to the rear side wall of the furnace body, and a balancing weight is arranged on the outer wall of the discharge gate.

5. The plasma preheating and incineration and cracking integrated furnace as claimed in claim 2, wherein the rotation speed of the feeding screw is 6-10 rpm, and the pushing speed is set at 2-5 cm/min; the inner side of the bottom of the furnace body is an arc-shaped surface matched with the feeding spiral.

6. The plasma preheating and incineration-cracking integrated furnace as recited in any one of claims 1 to 5, wherein the power of the plasma generator is 3 to 5kw and the arrangement density thereof is 3 to 6 counts/square decimeter; the distance between the plasma generator and the material is maintained between 7 and 10 centimeters; the temperature in the furnace body is 600-1200 ℃.