WO2022061693A1

WO2022061693A1 - Regenerative waste gas incinerator

Info

Publication number: WO2022061693A1
Application number: PCT/CN2020/117660
Authority: WO
Inventors: 陈耀庭
Original assignee: 绍兴君合新材料科技有限公司
Priority date: 2020-09-23
Filing date: 2020-09-25
Publication date: 2022-03-31
Also published as: CN213599389U; DE212020000741U1

Abstract

A regenerative waste gas incinerator, comprising a furnace body (3), a combustion chamber (6), a first heat exchanger (11), and a second heat exchanger (21) being arranged in the furnace body (3), a combustor (7) being arranged in the combustion chamber (6), a balance pipe (8) being connected to the combustion chamber (6), a waste gas inlet and an exhaust gas outlet being arranged on the combustion chamber (6), the exhaust gas outlet being connected to a hot medium inlet of the first heat exchanger (11), a hot medium outlet of the first heat exchanger (11) being connected to a hot medium inlet of the second heat exchanger (21), an exhaust gas outlet pipe (2) being connected to a hot medium outlet of the second heat exchanger (21), an induced draught fan (13) and a spray tower (14) being connected to the exhaust gas outlet pipe (2), the waste gas inlet of the combustion chamber (6) being connected to a cold medium outlet of the first heat exchanger (11), a waste gas intake pipe (1) being connected to a cold medium inlet of the first heat exchanger (11), a blower (9) and a filter (10) being arranged on the waste gas intake pipe (1), a fresh air intake pipe (4) being connected to a cold medium inlet of the second heat exchanger (21), and a fresh air outlet pipe (5) being connected to a cold medium outlet thereof. The present incinerator has high heat recovery efficiency and is energy saving and environmentally friendly, safe, and reliable.

Description

A regenerative waste gas incinerator

technical field

The utility model relates to a regenerative waste gas incinerator, which belongs to the technical field of organic waste gas treatment equipment.

Background technique

In the process of industrial production, toxic gases, volatile organic gases and odors are emitted. At present, the combustible waste gas is generally treated by combustion. After the treatment, the combustible waste gas is converted into carbon dioxide and water gas for discharge. It is not used effectively, and the exhaust gas will also cause environmental pollution.

Utility model content

The technical problem to be solved by the utility model is to provide a regenerative waste gas incinerator, which can recycle the heat generated in the combustion process, and the exhaust gas is cooled and filtered, so as to achieve a better effect of energy saving and emission reduction.

The technical scheme of the utility model is: a regenerative waste gas incinerator, comprising a furnace body, the furnace body is provided with a combustion chamber, a first heat exchanger and a second heat exchanger, and a burner is provided in the combustion chamber The combustion chamber is connected to a balance pipe, and the combustion chamber is provided with an exhaust gas inlet and a tail gas outlet, the exhaust gas outlet is connected to the heat medium inlet of the first heat exchanger, and the heat medium outlet of the first heat exchanger is connected to the second heat exchanger. The heat medium inlet of the second heat exchanger is connected with the exhaust gas outlet pipe, and the exhaust gas outlet pipe is connected with an induced draft fan and a spray tower, and the exhaust gas inlet of the combustion chamber is connected with the refrigerant outlet of the first heat exchanger. connection, the refrigerant inlet of the first heat exchanger is connected with an exhaust gas inlet pipe, the exhaust gas inlet pipe is provided with a blower and a filter, the refrigerant inlet of the second heat exchanger is connected with a fresh air inlet pipe, and the refrigerant outlet is connected There is fresh air out. The fuel and air are mixed and combusted through the burner in the combustion chamber. The high-temperature exhaust gas after combustion is drawn by the induced draft fan through the first heat exchanger and the second heat exchanger in turn, and then enters the spray tower for cooling and filtering, and is discharged. The exhaust gas passes through After being filtered by the filter, the exhaust gas inlet pipe enters the first heat exchanger to heat up, and after the temperature reaches a certain temperature, it enters the combustion chamber for combustion. The balance pipe connected to the combustion chamber introduces the combustion-supporting gas, which is conducive to the full combustion of the exhaust gas, and the gas to be heated enters through the fresh air. After the tube enters the second heat exchanger, it is heated up and sent to the factory building through the fresh air outlet pipe for reuse.

Further, the furnace body is provided with an explosion-proof inspection door. It is convenient to overhaul the devices in the furnace, such as heat exchangers.

It further includes a control device, a temperature sensor is arranged in the combustion chamber, and the temperature sensor and the burner are connected to the control device through a route. The organic waste gas must reach above 760 ℃ to completely oxidize and decompose its harmful components. The control device controls the flame size of the burner through the data transmitted by the temperature sensor, which not only ensures that the organic waste gas reaches the temperature of complete oxidation and decomposition, but also causes the fuel to burn when the temperature is too high. waste.

Further, a pressure pipe is connected between the combustion chamber and the spray tower, and a gas safety valve is arranged on the pressure pipe. In order to fully carry out heat exchange, the heat exchange coil is bent more and has a longer length, which is easy to cause blockage and cause dangerous situations such as explosion. When the heat exchange coil is blocked, when the pressure in the combustion chamber increases to a certain value, the gas safety valve will be closed. Open it, and directly introduce the high-temperature exhaust gas into the spray tower to prevent the occurrence of dangerous situations.

It further includes an alarm device, a second temperature sensor is arranged in the pressure pipe, and the second temperature sensor and the alarm device are respectively connected to the control device through lines. When the gas safety valve is opened, it means that the heat exchange coil is abnormal. When the high temperature exhaust gas passes through the pressure pipe, its temperature rises. The second temperature sensor transmits the information to the control device. The control device controls the alarm device to issue a warning and turns off the burner at the same time. .

To sum up, the utility model provides a regenerative waste gas incinerator with high heat recovery efficiency, energy saving and environmental protection, safety and reliability.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Figure 2 is a schematic diagram of the connection of the automatic control system.

As shown in the figure: exhaust gas inlet pipe 1; exhaust gas outlet pipe 2; furnace body 3; fresh air inlet pipe 4; fresh air outlet pipe 5; combustion chamber 6; burner 7; balance pipe 8; blower 9; filter 10; first Heat exchanger 11; explosion-proof inspection door 12; induced draft fan 13; spray tower 14; control device 15; temperature sensor 16; pressure pipe 17; gas safety valve 18; alarm device 19; second temperature sensor 20; second heat exchange device 21.

detailed description

Embodiments of the present utility model: As shown in Figures 1 to 2, a regenerative waste gas incinerator includes a furnace body 3, and the furnace body is provided with a combustion chamber 6, a first heat exchanger 11, and a second heat exchanger 21. A burner 7 is arranged in the combustion chamber 6, a balance pipe 8 is connected to the combustion chamber 6, an exhaust gas inlet and an exhaust gas outlet are arranged on the combustion chamber 8, and the exhaust gas outlet is connected to the heat medium inlet of the first heat exchanger 11, and the first The heat medium outlet of the heat exchanger 11 is connected with the heat medium inlet of the second heat exchanger 21, the heat medium outlet of the second heat exchanger 21 is connected with the exhaust gas outlet pipe 2, and the exhaust gas outlet pipe 2 is connected with the induced draft fan 13, the spray In the shower tower 14, the exhaust gas inlet of the combustion chamber 6 is connected with the refrigerant outlet of the first heat exchanger 11, the refrigerant inlet of the first heat exchanger 11 is connected with the exhaust gas inlet pipe 1, and the exhaust gas inlet pipe 1 is provided with a blower 9, a filter 10. A fresh air inlet pipe 4 is connected to the refrigerant inlet of the second heat exchanger 21, and a fresh air outlet pipe 5 is connected to the refrigerant outlet. The fuel and air are mixed and burned in the combustion chamber 6 through the burner 7, and the high-temperature exhaust gas after combustion is drawn by the induced draft fan 13 and passes through the first heat exchanger 11 and the second heat exchanger 21 in turn and then enters the spray tower 14. After cooling and filtering, the exhaust gas is discharged through the exhaust gas inlet pipe 1 and filtered by the filter 10, and then enters the first heat exchanger 11 to heat up, and after warming to a certain temperature, it enters the combustion chamber 6 for combustion, and the balance pipe 8 connected to the combustion chamber 6 is introduced into the combustion support. The gas is conducive to the full combustion of the exhaust gas. The heated gas enters the second heat exchanger 21 through the fresh air inlet pipe 4 to be heated, and then is transported to the factory building through the fresh air outlet pipe 5 for reuse.

The furnace body 3 preferred in this embodiment is provided with an explosion-proof inspection door 12 . It is convenient to overhaul the devices in the furnace body 3, such as heat exchangers.

This embodiment preferably includes a control device 15, a temperature sensor 16 is provided in the combustion chamber 6, and the temperature sensor 16 and the burner 7 are connected to the control device through a route. The organic waste gas must reach above 760°C to completely oxidize and decompose its harmful components. The control device 15 controls the flame size of the burner 7 through the data transmitted by the temperature sensor 16, which not only ensures that the organic waste gas reaches the temperature of complete oxidation and decomposition, but also makes the temperature too high. cause waste of fuel.

A pressure pipe 17 is connected between the preferred combustion chamber 6 and the spray tower 14 in this embodiment, and a gas safety valve 18 is arranged on the pressure pipe 17 . In order to fully carry out heat exchange, the heat exchange coil 11 is bent more and has a longer length, which is easy to cause blockage and cause dangerous situations such as explosion. When the heat exchange coil 11 is blocked, the pressure in the combustion chamber 6 increases to a certain value. , the gas safety valve 18 is opened, and the high-temperature exhaust gas is directly introduced into the spray tower 14 to prevent the occurrence of dangerous situations.

This embodiment preferably includes an alarm device 19, a second temperature sensor 20 provided in the pressure pipe 17, and the second temperature sensor 20 and the alarm device 19 are respectively connected to the control device 15 through lines. When the gas safety valve 18 is opened, it means that the heat exchange coil 11 is abnormal, and the temperature of the high-temperature exhaust gas increases when it passes through the pressure pipe 17 , the second temperature sensor 20 transmits the information to the control device 15 , and the control device 15 controls the alarm device 19 An alarm sounds and burner 7 is turned off at the same time.

Claims

A regenerative waste gas incinerator, comprising a furnace body, characterized in that: a combustion chamber, a first heat exchanger and a second heat exchanger are arranged in the furnace body, a burner is arranged in the combustion chamber, and a burner is arranged on the combustion chamber. Connect the balance pipe, the combustion chamber is provided with an exhaust gas inlet and an exhaust gas outlet, the exhaust gas outlet is connected with the heat medium inlet of the first heat exchanger, and the heat medium outlet of the first heat exchanger is connected with the heat medium inlet of the second heat exchanger connection, the heat medium outlet of the second heat exchanger is connected with a tail gas outlet pipe, the tail gas outlet pipe is connected with an induced draft fan and a spray tower, the exhaust gas inlet of the combustion chamber is connected with the refrigerant outlet of the first heat exchanger, the first The refrigerant inlet of the heat exchanger is connected with an exhaust gas inlet pipe, the exhaust gas inlet pipe is provided with a blower and a filter, the refrigerant inlet of the second heat exchanger is connected with a fresh air inlet pipe, and the refrigerant outlet is connected with a fresh air outlet pipe .
The regenerative waste gas incinerator according to claim 1, wherein the furnace body is provided with an explosion-proof inspection door.
The regenerative waste gas incinerator according to claim 1, characterized in that it includes a control device, a temperature sensor is arranged in the combustion chamber, and the temperature sensor and the burner are connected to the control device through a route.
The regenerative waste gas incinerator according to claim 3, wherein a pressure pipe is connected between the combustion chamber and the spray tower, and a gas safety valve is arranged on the pressure pipe.
The regenerative waste gas incinerator according to claim 4, characterized in that it includes an alarm device, a second temperature sensor is arranged in the pressure pipe, and the second temperature sensor and the alarm device are respectively connected to the control device through lines.