CN218155568U

CN218155568U - Emery wheel production heating system

Info

Publication number: CN218155568U
Application number: CN202221673166.6U
Authority: CN
Inventors: 虞灿标
Original assignee: Shaoxing Dingtai Energy Saving Environmental Protection Technology Co ltd
Current assignee: Shaoxing Dingtai Energy Saving Environmental Protection Technology Co ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2022-12-27
Anticipated expiration: 2032-06-30

Abstract

The utility model discloses a grinding wheel production heating system, which comprises a furnace cellar for heating a grinding wheel; a direct-fired furnace for oxidizing the organic waste gas into carbon dioxide and water by high-temperature combustion; the furnace inlet fan is positioned between the furnace pit and the direct-fired furnace, and gas generated by the furnace pit is introduced into the direct-fired furnace; and the cooling spraying system is communicated with the gas outlet of the direct-fired furnace, and discharges the residual gas into the atmosphere after cooling and spraying. The yellow dextrin of the grinding wheel is fully decomposed in the kiln, and the organic waste gas is safely discharged into the atmosphere after being treated by a direct-fired furnace and a cooling spraying system.

Description

Emery wheel production heating system

Technical Field

The utility model relates to a heating system, in particular to emery wheel production heating system.

Background

The grinding wheel is also called a consolidation grinding tool, the grinding wheel is a consolidation grinding tool which is formed by consolidating common grinding materials into a certain shape (mostly circular, a through hole is arranged in the center) by a binding agent and has certain strength, the consolidation grinding tool generally comprises the grinding materials, the binding agent and the air hole, the three parts are commonly called three elements of the consolidation grinding tool, according to different classifications of the binding agent, the three elements are commonly ceramic (binding agent) grinding wheels, resin (binding agent) grinding wheels and rubber (binding agent) grinding wheels, the grinding wheel is the one with the largest usage amount and the widest use surface in the grinding tool, and when the consolidation grinding tool is used, the consolidation grinding wheel rotates at a high speed and can carry out coarse grinding, semi-fine grinding and fine grinding, slotting, cutting and the like on the excircle, the inner circle, the plane, various molded surfaces and the like of a metal or nonmetal workpiece.

The grinding wheel needs to be heated at high temperature in the production process, the yellow dextrin in the grinding wheel is fully decomposed, but organic waste gas is generated in the decomposition process, and the environment is influenced by directly discharging the organic waste gas into the atmosphere.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a emery wheel production heating system fully decomposes the yellow dextrin of emery wheel with the stove cellar for storing things, and organic waste gas passes through direct-fired stove and cooling spraying system and handles the back, safely discharges into in the atmosphere.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a grinding wheel production heating system comprises a furnace pit for heating a grinding wheel;

a direct-fired furnace for oxidizing the organic waste gas into carbon dioxide and water by high-temperature combustion;

the furnace inlet fan is positioned between the furnace pit and the direct-fired furnace, and gas generated by the furnace pit is introduced into the direct-fired furnace;

and the cooling spraying system is communicated with the gas outlet of the direct-fired furnace, and discharges the residual gas into the atmosphere after cooling and spraying.

By adopting the technical scheme, the grinding wheel is placed in the kiln to be heated, the yellow dextrin is decomposed, the waste gas is poured into the direct-fired furnace through the furnace inlet fan, the organic waste gas is fired into carbon dioxide and water through high temperature combustion, and finally the gas is treated through the cooling spraying system.

Preferably, a waste heat recoverer is arranged in the direct-fired furnace.

By adopting the technical scheme, the gas heated by the kiln has a certain temperature, and the gas enters the hearth of the direct-fired furnace through the waste heat recoverer, so that the heat can be recycled, and the energy is effectively saved.

Preferably, the furnace cellar is provided with a first air outlet pipe and a second air outlet pipe, the first air outlet pipe is communicated with the furnace inlet fan, the first air outlet pipe is provided with a low-temperature valve, and the second air outlet pipe is provided with a high-temperature valve.

By adopting the technical scheme, the low-temperature valve and the high-temperature valve are used for respectively controlling the opening and closing of the first air outlet pipe and the second air outlet pipe.

Preferably, the furnace cellar is provided with two furnaces, and one furnace is large and one furnace is small.

Preferably, the furnace inlet fan is also connected with a small oven.

By adopting the technical scheme, the small oven is used for melting.

Preferably, the cooling spray system comprises a cooling water tank, a first-stage spray tower, a second-stage spray tower and a third-stage spray tower, wherein one end of the cooling water tank is communicated with the direct-fired furnace, and the other end of the cooling water tank is communicated with the first-stage spray tower.

Adopt above-mentioned technical scheme, carry out primary cooling to gas through cooling water tank, then through one-level spray column, second grade spray column and tertiary spray column, dissolve some residual waste gases in aqueous.

Preferably, a high-pressure fan is installed at an air outlet of the cooling spraying system.

By adopting the technical scheme, the high-pressure fan is used for assisting in exhausting the gas.

The utility model has the advantages that: 1. fully combusting the organic waste gas into carbon dioxide and water through a direct-fired furnace, and absorbing the residual organic waste gas in the gas into water through a spray tower; 2. the waste heat recoverer is used for utilizing the heat of gas heated by the furnace pit, so that the internal gas of the direct-fired furnace before starting has a certain temperature, and the energy is effectively saved; 3. when the temperature in the kiln reaches a certain value, the yellow dextrin is completely decomposed, the organic waste gas is completely oxidized into carbon dioxide and water, and the high-temperature valve is opened to directly exhaust the carbon dioxide and the water to the outside, so that the energy is effectively saved.

Drawings

Fig. 1 is a system diagram of the present invention.

Reference numerals are as follows: 1. a direct-fired furnace; 2. a furnace inlet fan; 3. a waste heat recoverer; 4. a low temperature valve; 5. a high temperature valve; 6. a cooling water tank; 7. a first stage spray tower; 8. a secondary spray tower; 9. a third stage spray tower; 10. a high pressure fan; 11. and a negative pressure gauge.

Detailed Description

The following is only the preferred embodiment of the present invention, the protection scope is not limited to this embodiment, and all technical solutions belonging to the idea of the present invention should belong to the protection scope of the present invention. It should also be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and such modifications and decorations should also be regarded as the protection scope of the present invention.

Referring to fig. 1, there are two kilns, one large and one small, one small 1# kiln, one large 2# kiln, and another small oven for proofing, and it is impossible to start firing grinding wheels simultaneously in one large and one small kiln, and by firing one large and one small kiln, it is guaranteed that there is no synchronous opening, so that a single kiln is designed to process air volume (taking 1# kiln as an example):

1. starting from the time when a product enters a furnace kiln, namely the temperature in the furnace is 0-150 ℃, wherein yellow dextrin which is one of main components of the grinding wheel is not decomposed, and directly opening a No. 1 low-temperature valve (closing a No. 1 high-temperature valve simultaneously) manually (without automatic safety consideration); the furnace inlet fan is started to pass through the combustor (combustion is not started at the moment), pass through the three-stage spray absorption tower and then be discharged to the atmosphere through the tail end induced air high-pressure fan;

2. when the temperature of a furnace is 150 to 600 ℃, starting a direct-fired furnace burner within 5 minutes before the temperature in the furnace reaches 150 ℃, setting the combustion temperature to 760 ℃ (± 5 ℃), keeping the temperature of a hearth of the burner to be about 760 ℃, enabling a furnace inlet fan to enter the hearth for combustion through a waste heat recoverer in the direct-fired furnace, and enabling the temperature of a combustion outlet to be about 400 ℃ after heat exchange; cooling by a cooling water tank of the cooling spray system, and discharging the air in the air through a tail end fan after the air passes through a three-stage spray tower, a two-stage spray tower and a three-stage spray tower in sequence;

3. when the temperature in the furnace exceeds 600 ℃, the yellow dextrin is basically completely decomposed, and most of organic waste gas components are oxidized into carbon dioxide and water through long-time retention time in the furnace; at the moment, a high-temperature valve of the No. 1 kiln is manually opened (attention is paid to high-temperature damage); the smoke is discharged as natural ventilation through the original chimney (the smoke is directly discharged by considering safety factors, and no peculiar smell exists at the moment);

4. after the operation is finished, the direct-fired furnace is closed, then the furnace inlet fan is closed, and then the induced air high-pressure fan and the spray tower water pump are closed when the temperature of the hearth is reduced to the normal temperature;

5. adding caustic soda flakes into the spray tower to keep the pH of water in the spray tower at about 8-9.

6. The frequency conversion regulation of the fan keeps the negative pressure at the outlet of the hearth at about-10 Pa according to a negative pressure meter designed in a pipeline; the negative pressure of the hearth is kept as much as possible. Controlling the combustor by a PLC program, stabilizing at 760 ℃, and displaying and inputting each temperature in the program; can be browsed at any time. Analyzing whether the direct discharge condition exists or not by comparing the temperature in the kiln and the temperature in each pipeline; the temperature range of the negative pressure gauge is between 0 and 500 ℃, and the negative pressure range is between 500Pa and 500Pa.

Claims

1. The grinding wheel production heating system is characterized by comprising a furnace cellar for heating a grinding wheel;

a direct-fired furnace, which oxidizes the organic waste gas decomposed from the yellow dextrin into carbon dioxide and water through high-temperature combustion;

and the cooling spraying system is communicated with the gas outlet of the direct-fired furnace.

2. The grinding wheel production heating system of claim 1, wherein a waste heat recovery device is arranged in the direct-fired furnace.

3. The grinding wheel production heating system according to claim 1, wherein the furnace cellar is provided with a first air outlet pipe and a second air outlet pipe, the first outlet pipe is communicated with the furnace inlet fan, the first air outlet pipe is provided with a low-temperature valve, and the second outlet pipe is provided with a high-temperature valve.

4. The grinding wheel production heating system of claim 1, wherein the furnace cellar is provided with two furnaces, one large and one small.

5. The grinding wheel production heating system of claim 1, wherein the furnace inlet fan is further connected with a small oven.

6. The grinding wheel production heating system according to claim 1, wherein the cooling spray system comprises a cooling water tank, a primary spray tower, a secondary spray tower and a tertiary spray tower, one end of the cooling water tank is communicated with the direct-fired furnace, and the other end of the cooling water tank is communicated with the primary spray tower.

7. The grinding wheel production heating system of claim 6, wherein a high pressure fan is installed at an air outlet of the cooling spray system.