CN108278620A - A kind of cylindrical type regenerative oxidation system - Google Patents

Abstract

The invention discloses a cylindrical thermal storage oxidation system, which comprises a cylindrical seven-chamber thermal storage oxidation furnace. The cylindrical seven-chamber thermal storage oxidation furnace includes seven umbrella-shaped regenerators evenly distributed in the cylindrical body, which are respectively Regenerator 1, Regenerator 2, Regenerator 3, Regenerator 4, Regenerator 5, Regenerator 6, Regenerator 7, the cylindrical seven-chamber regenerative oxidation furnace is connected to the waste gas and air of the workshop, The exhaust of the cylindrical seven-chamber thermal storage oxidation furnace is connected to a heat recovery system, and the exhaust of the heat recovery system is connected to a chimney. The exhaust of the cylindrical seven-chamber thermal storage oxidation furnace is connected to the chimney. A gas burner is installed in the furnace. The advantages of the present invention are: through the air supply and auxiliary heating device, one of the seven chambers of the cylindrical seven-chamber regenerative oxidation furnace is the first chamber where the waste gas enters in the previous cycle, and a circulation pipe is set. Further eliminate the trace amount of VOC carried in the flue gas when the valve is reversing, so that the exhaust gas can meet the emission standard.

Description

A cylindrical thermal storage oxidation system

technical field

The invention relates to the technical field of VOCs waste gas treatment, in particular to a cylindrical thermal storage oxidation system.

Background technique

Volatile organic compounds (VOCs) are a general term for a class of organic compounds. Among the 187 pollutants prioritized by the US EPA, 33 belong to VOCs. In my country, VOCs have been systematically controlled and prevented as pollutants. VOCs are harmful in many ways, specifically reflected in the following: most VOCs have pungent odors, and have carcinogenic, teratogenic, and mutagenic effects on the human body. When the concentration is too high, it is easy to cause acute poisoning. In mild cases, dizziness, coughing, Nausea, severe cases may lead to coma or even life-threatening; some flammable and explosive VOCs can also cause fire and explosion. It can be seen that VOCs are extremely harmful to the human body and even the entire ecosystem, and VOCs monitoring, analysis, control and governance are one of the priorities of modern environmental protection.

Contents of the invention

The technical problem to be solved by the present invention is to provide a cylindrical thermal storage oxidation system capable of recycling VOCs waste gas and recovering waste heat.

In order to solve the above technical problems, the technical solution of the present invention is: a cylindrical thermal storage oxidation system, the innovation point of which is that it includes a cylindrical seven-chamber thermal storage oxidation furnace, and the cylindrical seven-chamber thermal storage oxidation furnace includes uniformly distributed The regenerators in the seven umbrella-shaped areas in the cylinder are regenerator 1, regenerator 2, regenerator 3, regenerator 4, regenerator 5, regenerator 6 and regenerator 7 , the cylindrical seven-chamber thermal storage oxidation furnace is connected to workshop exhaust gas and air, the exhaust of the cylindrical seven-chamber thermal storage oxidation furnace is connected with a heat energy recovery system, and the exhaust of the heat energy recovery system is connected with a chimney, The exhaust of the cylindrical seven-chamber thermal storage oxidation furnace is connected to a chimney, and a gas burner is installed in the cylindrical seven-chamber thermal storage oxidation furnace.

Further, each of the regenerators is connected with a valve A, a valve B and a valve C, and the valves A of the seven regenerators are connected and connected with the air supply fan, and the air supply fan is connected with the workshop , the valves B of the seven regenerators are connected and communicated with the chimney, the valves C of the seven regenerators are connected and connected with the cleaning fan, and the exhaust port of the cleaning fan is connected to the air supply fan air intake.

Further, a valve D is installed at the upper exhaust of the cylindrical seven-chamber thermal storage oxidation furnace, and a valve E is installed between the lower exhaust of the heat recovery system and the chimney.

Further, the heat energy recovery system is connected with a hot water tank, a cold water tank and a frequency conversion water pump to form a circuit.

Further, there are two variable frequency water pumps.

Further, the hot water tank is directly connected to the cold water tank through an overflow pipe.

Further, a valve F is installed at the inlet of the air, a valve G is installed at the inlet of the workshop exhaust gas, and a valve H for emergency discharge is installed at the inlet of the workshop exhaust gas.

Further, a gas inlet valve I is installed on the gas burner.

The advantages of the present invention are:

(1) Through the air supply and auxiliary heating device, one of the seven chambers of the cylindrical seven-chamber regenerative oxidation furnace is the first chamber where the waste gas enters in the previous cycle, and the circulation pipe is set to further eliminate the valve The trace amount of VOC carried in the flue gas during the reversing makes the exhaust gas meet the emission standard.

(2) Arrange the heat energy recovery system to further recover and utilize the heat of the flue gas at the outlet of the cylindrical seven-chamber regenerative oxidation furnace, and at the same time, the processing device remains stable when the concentration and flow fluctuate greatly.

(3) Compared with other rotary regenerative oxidation furnaces, it is more advanced to use valves to switch and connect with pipes, which improves durability, sealing and reliability, and is easy to maintain. The designed volume can be of any size.

Description of drawings

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is a structural schematic diagram of a cylindrical thermal storage oxidation system of the present invention.

Detailed ways

The following examples can enable those skilled in the art to understand the present invention more comprehensively, but the present invention is not limited to the scope of the described examples.

As shown in Figure 1, a cylindrical regenerative oxidation system includes a cylindrical seven-chamber regenerative oxidation furnace, and the cylindrical seven-chamber regenerative oxidation furnace includes seven umbrella-shaped regenerators evenly distributed in the cylinder, They are regenerator one 1, regenerator two 2, regenerator three 3, regenerator four 4, regenerator five 5, regenerator six 6, regenerator seven 7, cylindrical seven-chamber heat storage The oxidation furnace is connected to the exhaust gas and air of the workshop, and the valve F8 is installed at the inlet of the air, the valve G9 is installed at the inlet of the workshop exhaust gas, and the valve H10 for emergency discharge is installed at the inlet of the workshop exhaust gas.

The exhaust of the cylindrical seven-chamber thermal storage oxidation furnace is connected with a heat energy recovery system 11, the exhaust of the heat energy recovery system 11 is connected with a chimney 12, and the heat energy recovery system 11 is connected with a hot water tank 13, a cold water tank 14 and a frequency conversion water pump 15 and To form a circuit, there are two frequency conversion water pumps. The hot water tank 13 and the cold water tank 14 are directly connected through the overflow pipe 16. The exhaust of the cylindrical seven-chamber thermal storage oxidation furnace is connected to the chimney 12. The cylindrical seven-chamber thermal storage oxidation furnace A gas burner 17 is installed inside, and a gas inlet valve I18 is installed on the gas burner 17, a valve D19 is installed on the upper exhaust of the cylindrical seven-chamber thermal storage oxidation furnace, and the lower exhaust of the heat recovery system 11 is connected with the chimney A valve E20 is installed between 12.

Each regenerator is connected with valve A21, valve B22 and valve C23. The valves A21 of the seven regenerators are connected and connected with the air supply fan 24. The air supply fan 24 is connected with the workshop. The valve B22 communicates with the chimney 12 , the valve C23 of the seven regenerators communicates with the cleaning fan 25 , and the exhaust port of the cleaning fan 25 is connected to the air inlet of the blower fan 24 .

A cylindrical regenerative oxidation system is used as follows: firstly turn on the cleaning fan 25 to blow air, discharge the combustible substances that may remain in the furnace, and then start the gas burner 17 to heat the regenerator in the furnace. When the temperature of the regenerator in the furnace rises to the specified temperature, the valve G9 installed at the inlet of the exhaust gas in the workshop is opened, and the exhaust gas is introduced into the furnace. Into the waste gas, the waste gas reaches the oxidation temperature of VOCs under the heating of the regenerator, and the VOCs decomposes into CO ₂ and H ₂ O and releases heat, and the temperature of the regenerator in the regenerator 1 gradually decreases; the purified high-temperature gas from The regenerator 4 is discharged, and the heat is transferred to the regenerator in the regenerator 4, and then discharged from the chimney; the cleaning fan 25 extracts fresh air to clean the regenerator 7 to clean up the VOCs that may remain in the regenerator 7 , leaving it in a standby state. After the regenerator one 1 and the regenerator four 4 work, delay 30 seconds to open the regenerator two 2 to feed the exhaust gas, and the exhaust gas is discharged from the regenerator five 5, when the regenerator two 2 and the regenerator After 5 5 works, delay 30 seconds to open the regenerator 3 3 to feed waste gas, and the waste gas is discharged from the regenerator 6 6 . At the end of the first cycle, the waste gas enters from the regenerator 4 4 and is preheated and oxidized, and is discharged from the regenerator 7 7 to heat the regenerator in the regenerator 7 7 and purge the regenerator 1 at the same time. put it on standby. At the end of the second cycle, the exhaust gas enters from the regenerator 5 5 and is preheated and oxidized, and is discharged from the regenerator 1 1 to heat the regenerator in the regenerator 1 , while purging the regenerator 2 . put it on standby. At the end of the third cycle, the exhaust gas enters the regenerator six 6 and is preheated and oxidized, and is discharged from the regenerator two 2 to heat the regenerator in the regenerator two 2 and purge the regenerator three 3 at the same time. put it on standby. At the end of the fourth cycle, the exhaust gas enters the regenerator six 6 and is preheated and oxidized, and is discharged from the regenerator three 3 to heat the regenerator in the regenerator three 3 and purge the regenerator four 4 at the same time. put it on standby. A big cycle ends, and the seven regenerators work alternately in this way.

When the concentration of VOCs in the exhaust gas increases, resulting in a high temperature in the combustion chamber, part of the flue gas is directly discharged from the chimney after cooling through the heat energy recovery system 11, reducing the heat accumulated in the heat storage body and reducing the preheating temperature of the exhaust gas.

When the concentration of VOCs in the waste gas is low and the temperature of the combustion chamber is low, start the gas burner 17 to supplement the heat to keep the temperature in the furnace stable.

In the event of over-temperature of the combustion chamber, equipment failure and other emergencies, cut off the valve G9 at the inlet of the waste gas in the workshop, and open the valve H10 for emergency discharge.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments, and what described in the above-mentioned embodiments and the description only illustrates the principles of the present invention, and the present invention will also have other functions without departing from the spirit and scope of the present invention. Variations and improvements all fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (8)

1. a kind of cylindrical type regenerative oxidation system, it is characterised in that：Including seven Room regenerative oxidation stove of cylindrical type, the cylindrical type seven Room regenerative oxidation stove includes the regenerative chamber for seven pileated regions being evenly distributed in cylinder, respectively regenerative chamber one, accumulation of heat Room two, regenerative chamber three, regenerative chamber four, regenerative chamber five, regenerative chamber six, regenerative chamber seven, seven Room regenerative oxidation stove of the cylindrical type connect Into house exhaust and air, heat reclaiming system, the thermal energy are connected at the exhaust of seven Room regenerative oxidation stove of the cylindrical type It is connected with chimney at recovery system exhaust, chimney, the cylinder are connected at the exhaust of seven Room regenerative oxidation stove of the cylindrical type Gas burner is installed in seven Room regenerative oxidation stove of type.

2. a kind of cylindrical type regenerative oxidation system according to claim 1, it is characterised in that：Each regenerative chamber connects It is connected to valve A, valve B and valve C, the valve A of seven regenerative chambers is connected and is connected with breeze fan, the air-supply wind Machine is connected with workshop, and the valve B of seven regenerative chambers is connected and is connected with chimney, the valve of seven regenerative chambers C is connected and is connected with wind turbine is cleaned, and the exhaust outlet for cleaning wind turbine is connected to the air inlet of breeze fan.

3. a kind of cylindrical type regenerative oxidation system according to claim 2, it is characterised in that：Seven Room accumulation of heat of the cylindrical type Valve D is installed at the upper exhaust of oxidation furnace, valve E is installed between chimney at the lower exhaust of the heat reclaiming system.

4. a kind of cylindrical type regenerative oxidation system according to claim 3, it is characterised in that：The heat reclaiming system connects It is connected to boiler, cold water storage cistern and variable frequency pump and constitutes circuit.

5. a kind of cylindrical type regenerative oxidation system according to claim 4, it is characterised in that：The variable frequency pump shares two It is a.

6. a kind of cylindrical type regenerative oxidation system according to claim 5, it is characterised in that：The boiler and cold water storage cistern Directly connected by overflow pipe.

7. a kind of cylindrical type regenerative oxidation system according to claim 6, it is characterised in that：The air place of the tapping into installation There are valve F, the house exhaust place of tapping into that valve G is installed, the house exhaust place of tapping into is also equipped with for emergent discharge Valve H.

8. a kind of cylindrical type regenerative oxidation system according to claim 7, it is characterised in that：Pacify on the gas burner Equipped with the valve I into combustion gas.