WO2020199095A1

WO2020199095A1 - Electric heat tracing system of fly ash storage tank for domestic waste incineration

Info

Publication number: WO2020199095A1
Application number: PCT/CN2019/080865
Authority: WO
Inventors: 廖鹏
Original assignee: 深圳市能源环保有限公司
Priority date: 2019-04-01
Filing date: 2019-04-01
Publication date: 2020-10-08

Abstract

An electric heat tracing system of a fly ash storage tank (1) for domestic waste incineration, comprising the fly ash storage tank (1) and a heating device provided on an outer wall of the tank. An upper portion of the fly ash storage tank (1) is of a cylindrical structure (2), and a lower portion thereof is of a funnel structure (3). The heating device is composed of heating blocks (4) arranged in close attached to and fixed on the outer wall of the tank and having an independent heating function, the heating blocks (4) each having a heating face and the heating face being closely attached to the outer wall of the tank. The outer wall of the fly ash storage tank (1) is further provided with a temperature measuring element (5), and an electrical cable branch box and a temperature control cabinet are provided on the outer wall of the fly ash storage tank (1). The temperature control cabinet controls the heating blocks (4) by means of the electrical cable branch box, solving the problem in the prior art that a heating jacket needs to be replaced as a whole.

Description

Electric heating system for domestic garbage incineration fly ash storage tank

Technical field

The utility model relates to a garbage incineration power generation fly ash storage device, in particular to an electric heating system for a domestic garbage incineration fly ash storage tank.

Background technique

In the process of waste incineration and power generation, the flue gas produced by waste incineration contains a large amount of fly ash. After the flue gas treatment processes such as reaction tower deacidification, activated carbon injection and bag dust removal, the fly ash is filtered and collected into the reaction tower and bag ash hopper , The fly ash is sent to the ash warehouse for storage through the scraper conveyor and bucket elevator. Fly ash particles are extremely fine, and it is very easy to be damp and agglomerate to cause blockage of the ash conveyor. It is necessary to maintain a high temperature condition during transportation and storage to avoid dampness of fly ash. Waste incineration power plants generally install electric heating devices on conveyors and ash tank shells to maintain the dryness of fly ash.

However, the disclosed electric heating device for the waste fly ash storage tank adopts an integral structure, that is, a heating jacket is arranged on the outer surface of the waste fly ash storage tank. Because the heating jacket is a whole, when the heating element inside the heating jacket is damaged The heating jacket needs to be replaced as a whole. The overall replacement cost is high, and the overall replacement project is large, which seriously affects the normal operation of the waste incineration system.

Summary of the invention

In order to solve the shortcomings of the prior art, the utility model provides an electric heating system for domestic garbage incineration fly ash storage tanks. The electric heating system on the outer wall of the garbage fly ash storage tank adopts a layered and independent setting method, which effectively solves the problem. There is a technical problem that the heating jacket needs to be replaced as a whole.

The technical scheme adopted by the utility model to solve the technical problem: an electric heating system for a domestic waste incineration fly ash storage tank, which includes a fly ash storage tank and a heating device arranged on the outer wall of the tank. The upper part of the fly ash storage tank is cylindrical The structure, the lower part is a funnel-shaped structure, characterized in that the heating device is composed of heating blocks with independent heating functions arranged and closely fixed on the outer wall of the tank, the heating block has a heating surface and the heating surface is close to the outer wall of the tank , The outer wall of the fly ash storage tank is also provided with a temperature measuring element, an electric junction box is arranged on the outer wall of the fly ash storage tank, and a temperature control cabinet is also provided, and the temperature control cabinet is connected to each other through the electric junction box The heating block performs heating control.

Preferably, the heating blocks are arranged in layers to form an upper heating layer, a middle heating layer and a lower heating layer.

Preferably, an electrical tap box is provided on each side of the tank outer wall corresponding to the upper heating layer, and an electrical tap box is provided on each side of the tank outer wall corresponding to the middle heating layer, and the lower heating layer is heated. An electric tap box is provided on each side of the outer wall of the tank corresponding to the layer, and the temperature control cabinet controls its corresponding heating layer through each electric tap box.

Preferably, the heating block is a mica heater.

The beneficial effects of the present invention: the utility model provides an electric heating system for domestic garbage incineration fly ash storage tanks. The electric heating system on the outer wall of the garbage fly ash storage tank adopts a layered and independent setting method, which effectively solves the existing technology The technical problem that the heating jacket needs to be replaced as a whole.

Description of the drawings

Figure 1 is a schematic structural diagram of an embodiment of the utility model.

In the picture:

1. Fly ash storage tank;

2. Cylindrical structure;

3. Funnel-shaped structure;

4. Heating block; 4.1A, 4.1B upper heating layer, 4.2 middle heating layer, 4.3 lower heating layer

5. Temperature measuring components.

detailed description

Figure 1 is a schematic structural diagram of an embodiment of the utility model. The figure shows that in this example, an electric heating system for a domestic waste incineration fly ash storage tank includes a fly ash storage tank 1 and a heating device arranged on the outer wall of the tank. The upper part of the fly ash storage tank 1 has a cylindrical structure 2. The lower part is a funnel-shaped structure 3. The difference from the prior art is that in this example, the heating device is composed of heating blocks 4 arranged in a row and closely fixed to the outer wall of the tank with independent heating functions. The heating blocks 4 have heating surfaces and generate heat. The surface is close to the outer wall of the fly ash storage tank 1. A temperature measuring element 5 is also arranged on the outer wall of the fly ash storage tank 1. An electric tap box is set on the outer wall of the fly ash storage tank 1, and a temperature control cabinet is also provided. The electric tap box controls the heating of the heating block 4.

Figure 1 shows that in this example, the heating block 4 is arranged in layers to form the upper heating layer 4.1A, 4.1B, the middle heating layer 4.2 and the lower heating layer 4.3.

In this example, an electric tap box is set on each side of the tank outer wall corresponding to the upper heating layer, and an electric tap box is set on each side of the tank outer wall corresponding to the middle heating layer. One electric tap box is set on each side, and the temperature control cabinet controls its corresponding heating layer through each electric tap box.

In this example, mica heater is used as heating block.

The utility model provides an electric heat tracing system for domestic garbage incineration fly ash storage tanks. The electric heat tracing system on the outer wall of the garbage fly ash storage tank adopts a layered and independent setting method. When individual heating blocks are damaged, they can be damaged. The heating block is repaired, which effectively solves the technical problem that the existing technology needs to replace the heating jacket as a whole.

Claims

An electric heating system for a domestic waste incineration fly ash storage tank, comprising a fly ash storage tank and a heating device arranged on the outer wall of the tank. The upper part of the fly ash storage tank has a cylindrical structure and the lower part has a funnel-shaped structure. The heating device is composed of heating blocks with independent heating functions arranged and closely fixed on the outer wall of the tank, the heating block has a heating surface and the heating surface is close to the outer wall of the tank, and the outer wall of the fly ash storage tank is also A temperature measuring element is provided, an electric tap box is arranged on the outer wall of the fly ash storage tank, and a temperature control cabinet is also arranged, and the temperature control cabinet controls the heating of the heating block through the electric tap box.
The electric heating system for the domestic waste incineration fly ash storage tank according to claim 1, wherein the heating blocks are arranged in layers to form an upper heating layer, a middle heating layer and a lower heating layer.
The electric heat tracing system for the domestic waste incineration fly ash storage tank according to claim 1, wherein an electric tap box is provided on each side of the outer wall of the tank corresponding to the upper heating layer, and the middle heating layer An electric tap box is set on each side of the corresponding tank outer wall, and an electric tap box is set on each side of the tank outer wall corresponding to the lower heating layer. The temperature control cabinet is connected to each other through each electric tap box. The corresponding heating layer is controlled.
The electric tracing system for the domestic waste incineration fly ash storage tank according to claim 1, wherein the heating block is a mica heater.