CN219357366U - Continuous converting solid salt reverberatory furnace - Google Patents

Abstract

The utility model discloses a continuous converting solid salt reverberatory furnace, which comprises a horizontal reverberatory furnace body, wherein the head part of the reverberatory furnace body is provided with a waste salt inlet and a burner, the tail part of the reverberatory furnace body is provided with a molten salt outlet and a flue gas outlet, the bottom surface of a furnace chamber of the reverberatory furnace body is obliquely arranged, one end of the bottom surface of the reverberatory furnace body is higher than one end of the molten salt outlet, a plurality of continuous converting air pipes are arranged on the side wall of the reverberatory furnace body, an air inlet of each continuous converting air pipe is connected with an air supply device, an air outlet is communicated with the furnace chamber of the reverberatory furnace body, the air outlet is obliquely arranged downwards, and the air outlet is close to the bottom surface of the furnace chamber. According to the utility model, the continuous blowing air pipe is used for blowing air, so that organic matters in the liquid molten salt can be completely decomposed in an oxidizing environment, and the TOC content in the obtained product is less than 10mg.

Description

Continuous converting solid salt reverberatory furnace

Technical Field

The utility model relates to the field of reverberatory furnaces, in particular to a continuous converting solid salt reverberatory furnace.

Background

Generally, aiming at the property of industrial waste salt, a high-temperature oxidation method is generally adopted according to the content of organic matters in the waste salt, and the method aims at high-temperature treatment of the waste salt aiming at high content of the organic matters in the waste salt, so that organic impurities in the waste salt are oxidized into CO2, CO, H2O and acid gas at high temperature, and the aim of removing the organic impurities is fulfilled. The high temperature oxidation method generally adopted is a temperature control roasting method and a high temperature liquid state melting method. The high temperature liquid melting method is to change the polluted salt into liquid state at high temperature to decompose the organic matters in the polluted salt, and the generated fume enters the secondary combustion chamber through the flue for re-combustion. High temperature liquid melting processes typically employ a reverberatory furnace. The working environment in the furnace chamber is a reducing environment, so that the traditional reverberatory furnace adopts a periodic operation mode, and organic matters in the polluted salt are easy to carbonize at high temperature, so that the recovered salt has higher TOC content; on the other hand, the furnace temperature changes sharply during discharging and feeding, and the refractory material is damaged relatively greatly.

Disclosure of Invention

The utility model aims to provide a continuous converting solid salt reverberatory furnace.

The innovation point of the utility model is that the continuous blowing air pipe blows air, so that organic matters in the liquid molten salt can be completely decomposed in an oxidation environment, and the TOC content in the obtained product is less than 10mg.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

the utility model provides a continuous converting solid salt reverberatory furnace, includes horizontal reverberatory furnace body, and reverberatory furnace body head is equipped with waste salt import and combustor, afterbody and is equipped with the fused salt export, and the bottom surface slope of the furnace chamber of reverberatory furnace body is arranged, and the bottom surface is located waste salt import one end and is higher than fused salt export one end, its characterized in that is equipped with a plurality of continuous converting tuber pipes on the lateral wall of reverberatory furnace body, and the air intake connection of continuous converting tuber pipe has air supply unit, air outlet intercommunication reverberatory furnace body's furnace chamber, and the air outlet downward sloping is arranged, and the air outlet is close to the bottom surface of furnace chamber.

The waste salt is heated by a burner after entering the waste salt inlet, the waste salt is melted, the air supply device supplies air continuously to the continuous converting air pipe to disturb the waste salt in a molten state, organic matters in the waste salt react with oxygen in the air, the organic matters are discharged from a flue gas outlet, and the organic matters are burnt and oxidized; the waste salt inlet continuously feeds salt, the waste salt outlet continuously discharges the material, and the refractory materials in the reverberatory furnace cannot be influenced by severe temperature change.

Preferably, the continuous converting pipe has an angle of 15 ° with the horizontal plane. Experiments prove that the angle disturbance effect is best.

Preferably, the air pressure in the continuous converting air pipes is 30-50 kpa, the continuous converting air pipes are horizontally arranged, and the distance between adjacent continuous converting air pipes is 0.2-0.3 m. The liquid slag is blown to the opposite side wall due to excessive wind pressure, so that the wall is easy to hang; too small a liquid molten salt cannot form effective stirring, and organic matters in the molten salt are not fully contacted with oxygen, so that the TOC content of the recovered solid salt is high.

Preferably, a row of continuous converting air pipes are distributed on the two side walls of the reverberatory furnace body. The air is simultaneously fed from two sides, so that the effect is good.

Preferably, the two rows of continuous converting air pipes are arranged in a staggered mode. The organic matters in the molten salt are more fully contacted with oxygen, and the disturbance is more severe.

Preferably, the tail part of the reverberatory furnace body is directly communicated with a secondary combustion chamber, a burner is arranged on the secondary combustion chamber, and a flue gas outlet is arranged at the top of the secondary combustion chamber. When the flue gas generated during high-temperature melting enters the secondary combustion chamber to burn again through the flue, the flue gas can generate temperature drop to cause molten salt cooling of the jacket in the flue gas to adhere to the flue gas to block the flue gas, and meanwhile, the cooled flue gas enters the secondary combustion chamber to raise the temperature to 1100 ℃ to consume more running fuel cost, so that the flue gas in the reverberatory furnace directly enters the secondary combustion chamber to burn at high temperature, and the blocking condition of the traditional connecting flue gas is reduced.

Preferably, the furnace chamber top surface of the reverberatory furnace body is provided with a downward bent closing section at the tail part. On one hand, the flow speed of the flue gas can be increased when the flue gas passes through; on the other hand, the flue gas is pressed down, the flue gas is more easily contacted with the flame of the burner of the secondary combustion chamber, if the secondary combustion chamber is not provided with a closing-in section, the flue gas can escape from the closing-in section, and the combustion is insufficient.

Preferably, the bottom surface of the furnace chamber of the reverberatory furnace body is an arc surface. The molten salt is more favorable to disturbance, and dead angles do not exist during the disturbance.

The beneficial effects of the utility model are as follows:

1. according to the utility model, the continuous blowing air pipe is used for blowing air, so that organic matters in the liquid molten salt can be completely decomposed in an oxidizing environment, and the TOC content in the obtained product is less than 10mg.

2. In the utility model, the flue gas combusted in the reverberatory furnace directly enters the secondary combustion chamber for high-temperature combustion, so that the blocking condition of the traditional connecting flue is reduced.

Drawings

Fig. 1 is a front view of the present utility model.

Fig. 2 is a top view of fig. 1.

Fig. 3 is a side view of fig. 1.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings.

Example 1: as shown in fig. 1, 2 and 3, the continuous converting solid salt reverberatory furnace comprises a horizontal type reverberatory furnace body 1, wherein a waste salt inlet 1.1 and a burner 2 are arranged at the head part of the reverberatory furnace body 1, a molten salt outlet 1.2 and a flue gas outlet 1.4 are arranged at the tail part of the reverberatory furnace body, the bottom surface 1.31 of a furnace chamber 1.3 of the reverberatory furnace body 1 is obliquely arranged, one end of the bottom surface 1.31 of the waste salt inlet 1.1 is higher than one end of the molten salt outlet 1.2, the bottom surface 1.3 of the furnace chamber of the reverberatory furnace body is an arc-shaped surface, a row of continuous converting air pipes 3 are uniformly distributed on two side walls of the reverberatory furnace body 1, an air inlet 3.1 of the continuous converting air pipes is connected with an air supply device 4, an air outlet 3.2 is communicated with the furnace chamber 1.3 of the reverberatory furnace body, the air outlet 3.2 is obliquely arranged downwards, the air outlet 3.2 is close to the bottom surface 1.31 of the furnace chamber, the included angle between the continuous converting air pipes 3 and the horizontal plane is 15 degrees, the air pressure in the continuous converting air pipes 3 is 50kpa, and the distance between adjacent continuous converting air pipes 3 is 0.3m; the tail of the reverberatory furnace body 1 is directly communicated with a secondary combustion chamber 5, a combustor 2 is arranged on the secondary combustion chamber 5, a flue gas outlet 1.4 is arranged at the top of the secondary combustion chamber 5, and a closing-in section 1.321 which is downwards bent is arranged at the tail of the furnace chamber top surface 1.32 of the reverberatory furnace body.

During operation, waste salt is continuously added into the furnace chamber 1.3 from the waste salt inlet 1.1, the air supply device 4 supplies air to the continuous converting air pipe 3, molten salt is disturbed, organic matters in the molten salt can fully contact with air to perform oxidation reaction, the molten salt slowly moves to the molten salt outlet 1.2 by means of dead weight, the molten salt outlet 1.2 continuously discharges, reacted flue gas enters the combustor 2 of the secondary combustion chamber 5 to continue secondary combustion, and the flue gas is discharged from the flue gas outlet 1.4.

The described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Claims (8)

1. The utility model provides a continuous converting solid salt reverberatory furnace, includes horizontal reverberatory furnace body, and reverberatory furnace body head is equipped with waste salt import and combustor, afterbody are equipped with fused salt export and flue gas export, and the bottom surface slope of the furnace chamber of reverberatory furnace body is arranged, and the bottom surface is located waste salt import one end and is higher than fused salt export one end, and its characterized in that is equipped with a plurality of continuous converting tuber pipes on the lateral wall of reverberatory furnace body, and the air intake connection of continuous converting tuber pipe has air supply device, the furnace chamber of air outlet intercommunication reverberatory furnace body, and the air outlet downward sloping is arranged, and the air outlet is close to the bottom surface of furnace chamber.

2. The continuous converting solid salt reverberatory furnace according to claim 1, characterized in that the continuous converting air pipe is inclined at 15 ° to the horizontal.

3. The continuous converting solid salt reflecting furnace according to claim 1, wherein the air pressure in the continuous converting air pipes is 30-50 kpa, the continuous converting air pipes are horizontally arranged, and the distance between adjacent continuous converting air pipes is 0.2-0.3 m.

4. A continuous converting solid salt reverberatory furnace according to claim 3, characterized in that a row of continuous converting pipes are arranged on both side walls of the reverberatory furnace body.

5. The continuous converting solid salt reflecting furnace according to claim 4, wherein two rows of continuous converting air pipes are arranged in a staggered manner.

6. The continuous converting solid salt reverberatory furnace according to claim 1, wherein the tail part of the reverberatory furnace body is directly communicated with a secondary combustion chamber, a burner is arranged on the secondary combustion chamber, and a flue gas outlet is arranged at the top of the secondary combustion chamber.

7. The continuous converting solid salt reverberatory furnace of claim 6, wherein the top surface of the furnace chamber of the reverberatory furnace body is provided with a down-turned closing section at the tail.

8. The continuous converting solid salt reverberatory furnace of claim 1, wherein the bottom surface of the furnace chamber of the reverberatory furnace body is an arcuate surface.