CN107726337B - Flue gas treatment system of garbage treatment furnace - Google Patents

Abstract

The present invention discloses a flue gas treatment system for a garbage treatment furnace, which includes a garbage incineration treatment furnace, a steam-smoke mixing cooling device, a sewage circulation device and an induced draft duct, and a cyclone sedimentation dust collector and an exhaust duct. The garbage incineration treatment furnace includes a shell, an incineration treatment chamber, a smoke buffer chamber, a furnace water cooling chamber, and a smoke extraction pipe. The smoke buffer chamber is provided with an air inlet extending to the shell. The steam-smoke mixing cooling device includes an outer tube body, a smoke exhaust pipe provided in the outer tube body, a cooling spray nozzle provided on the outer tube body above the smoke exhaust pipe, a mixing chamber provided inside the outer tube body, and a water vapor recovery pipe provided on the outer tube body, one end of which extends to the inside of the mixing chamber and is connected to the furnace water cooling chamber, and the other end is connected to the furnace water cooling chamber; the sewage circulation device is connected to the mixing chamber. The present invention has the effects of efficient smoke removal and deodorization, recycling garbage and sewage, low manufacturing and operation costs, stable operation, easy maintenance, and ensuring the continuous and safe operation of the garbage treatment furnace.

Description

A flue gas treatment system for a garbage treatment furnace

technical field

The invention relates to the field of garbage incineration treatment equipment, in particular to a flue gas treatment system of a garbage treatment furnace which can process garbage sewage and flue gas.

Background technique

In recent years, the country has implemented a large number of garbage harmless and thorough incineration furnaces for garbage treatment. Since this product is still in the stage of continuous development, research, and improvement, there are still many shortcomings. The smoke and garbage generated during the garbage incineration process The sewage generated during the recycling process and before treatment is one of the problems. If a set of flue gas purification system and sewage treatment equipment are equipped for each set of waste incinerators, it will increase the burden of capital and manpower on the user unit.

Contents of the invention

In view of the above problems, the object of the present invention is to provide a garbage disposal with high efficiency in smoke removal and deodorization, recycling of garbage and sewage, low manufacturing and operating costs, stable operation, easy maintenance, and continuous and safe operation of the garbage disposal furnace. Furnace flue gas treatment system.

In order to achieve the above object, the present invention provides a flue gas treatment system of a garbage treatment furnace, which includes a garbage incineration treatment furnace, a steam-smoke mixing cooling device provided on the top side of the garbage incineration treatment furnace, and a steam-smoke mixing cooling device. The device is respectively provided with a sewage circulation device and an air induction pipe, and a cyclone sedimentation dust collector and an exhaust pipe are arranged on the air induction pipe. The waste incineration furnace includes a shell, an incineration treatment chamber at the bottom of the shell, a flue gas buffer chamber and a water cooling chamber for the furnace body arranged in sequence on the top of the incineration treatment chamber, and a Fume pipe for the buffer room. The flue gas buffer chamber is provided with an air inlet extending to the casing. The steam-smoke mixing and cooling device includes an outer tube body provided on one side of the shell, a smoke exhaust pipe communicated with the smoke buffer chamber in the outer tube body, and a The cooling spray nozzle, the mixing chamber provided inside the outer pipe body, and the water vapor recovery pipe that is provided on the outer pipe body with one end extending to the inside of the mixing chamber and the other end communicating with the water cooling chamber of the furnace body; the sewage circulation device and The mixing chamber communicates.

In some embodiments, the interface of the water cooling chamber of the furnace body connected with the water vapor recovery pipe is set as a conical water vapor outlet; the water inlet is provided on the water cooling chamber of the furnace body; the four faces of the water cooling chamber of the furnace body All are equipped with adjustable air inlets.

In some embodiments, the sewage circulation device includes a return pipe on the mixing chamber, a sewage storage tank provided on the end of the return pipe, a circulating water pump provided on the sewage storage tank, and one end is connected with the circulating water pump, and the other A water supply pipe connected at one end to the water inlet.

In some embodiments, the smoking pipe includes a honeycomb pipe disposed on the pipe body and the bottom end of the pipe body.

In some embodiments, the cyclone sedimentation dust collector includes a collection tank and a dust discharge valve arranged at the bottom of the collection tank; the exhaust pipe is arranged at the top of the collection tank.

In some embodiments, a maintenance window is provided above the outer casing on the front of the mixing chamber.

In some embodiments, the smoke exhaust pipe is composed of a plurality of thin pipes, and is connected to the connection port by a flange. This structure can facilitate the uniform and fast cooling effect on the exhaust gas, and generate a large amount of high-temperature water vapor.

The invention has the beneficial effects of highly efficient smoke removal and deodorization, recycling of garbage and sewage, low manufacturing and operating costs, stable operation, easy maintenance, and continuous and safe operation of the garbage treatment furnace. The details are as follows: (1) The top of the waste incineration furnace is cooled by the water storage structure of the furnace body water cooling chamber, and the smoke exhaust pipe is cooled by water spraying in the steam-smoke mixed cooling device. The high temperature is about 100 degrees Celsius, so the top of the furnace body and the exhaust pipe will generate a high temperature through heat transfer, and a large amount of water resources will be consumed during water cooling. Using this principle to solve the problem of sewage treatment.

(2) The top of the waste incineration furnace is made into a cone shape and a water vapor outlet is installed. Since a large amount of water vapor will be generated during water cooling operation, this structure can facilitate the rapid and smooth discharge of water vapor to the exhaust port.

(3) The steam-smoke mixing and cooling device includes an outer pipe body provided on one side of the shell, a smoke exhaust pipe connected with the smoke buffer chamber is arranged in the outer pipe body, and a smoke exhaust pipe is arranged on the outer pipe body above the smoke exhaust pipe. There are cooling spray nozzles, a mixing chamber inside the outer pipe body, and a water vapor recovery pipe that extends to the inside of the mixing chamber on the outer pipe body and communicates with the water cooling chamber of the furnace body at the other end. The sewage circulation device communicates with the mixing chamber. The four sides of the outer pipe body are provided with cooling spray nozzles for cooling the exhaust pipe. During operation, the spray nozzle will be cooled and the smoke exhaust pipe will be cooled. A large amount of high-temperature water vapor will be accumulated in the mixing chamber. In addition, the water vapor recovered by the water vapor recovery pipe connected to the water cooling chamber of the furnace body is installed on the top of the mixing chamber. This structure can use the water vapor and the flue gas discharged from the exhaust pipe to carry out unified mixing and buffering in the mixing chamber, because the ultra-high temperature water vapor is composed of nano-scale water molecules, because the nano-scale water molecules are much smaller than those in the waste incineration furnace The smoke, ash, and dust generated, so that the water vapor forms a package state for the smoke, ash, and dust generated in the waste incineration treatment, so that the smoke, ash, and dust increase the specific gravity, and decelerate before entering the cyclone sedimentation dust collector, which is beneficial to the cyclone The treatment of the sedimentation dust collector and the subsequent spray scrubber can effectively remove the smoke, ash and dust generated in the incineration treatment, and the effect is particularly ideal.

(4) In the middle of the lower part of the flue gas buffer chamber, there is a smoke pipe that extends into the combustion layer of the incineration treatment chamber and the other end is connected with the flue gas buffer chamber. The smoke pipe is made of special material pipes, and the inside of the lower end is made of multiple special material pipes Honeycomb shape, and directly extends to the top of the flame of the combustion layer. When this structure is in operation, the smoke pipe reaches the same temperature due to the high temperature of more than 1000 degrees in the furnace. Because the harmful gas generated during garbage incineration is generally in a high temperature state Can completely remove, such as dioxin, tar, sulfur dioxide and other harmful gases and smoke through the honeycomb tube can be evenly and comprehensively high-temperature treatment, so as to completely remove harmful gases and smoke. Therefore, it achieves the effects of efficient smoke removal and deodorization, recycling of garbage and sewage, low manufacturing and operating costs, stable operation, easy maintenance, and continuous and safe operation of the garbage treatment furnace.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a structural schematic diagram of the layout of cooling spray nozzles shown in Fig. 1;

Fig. 3 is a schematic structural diagram of the smoke pipe shown in Fig. 1 .

Detailed ways

Below in conjunction with accompanying drawing, invention is described in further detail.

As shown in Fig. 1-3, a flue gas treatment system of a waste treatment furnace includes a waste incineration treatment furnace 01, a steam-smoke mixing cooling device 02 provided on the top side of the waste incineration treatment furnace 01, a steam-smoke mixing cooling device 02 The device 02 is provided with a sewage circulation device 03 and an air induction pipe 04 respectively, and a cyclone sedimentation dust collector 05 provided on the air induction pipe 04 and an exhaust pipe 06 provided on the cyclone sedimentation dust collector 05 . The waste incineration furnace 01 includes a shell 11, an incineration treatment chamber 12 provided at the bottom of the shell 11, a flue gas buffer chamber 13 and a furnace body water cooling chamber 14 successively provided on the top of the incineration treatment chamber 12, and an incineration treatment chamber 12 is provided with a smoke pipe 15 extending to the smoke buffer chamber 13. The smoke buffer chamber 13 is provided with an air inlet 16 extending to the casing 11 . The steam-smoke mixing and cooling device 02 includes an outer tube body 21 provided on one side of the housing 11, a smoke exhaust pipe 22 communicated with the smoke buffer chamber 13 inside the outer tube body 21, and a smoke exhaust pipe 22 above the smoke exhaust pipe 22. The cooling spray nozzle 23 provided on the top of the outer pipe body 21, the mixing chamber 24 provided inside the outer pipe body 21, the outer pipe body 21 is provided with one end extending to the inside of the mixing chamber 24, and the other end communicates with the water cooling chamber of the furnace body. 14 communicated water vapor recovery pipe 25. The four sides of the outer pipe body 21 are provided with cooling spray nozzles 23 for cooling the exhaust pipe 22 , and the sewage circulation device 03 communicates with the mixing chamber 24 . The furnace body water cooling chamber 14 interface connected with the water vapor recovery pipe 25 is set as a conical water vapor outlet 26; The sewage circulation device 03 comprises the return pipe 31 on the mixing chamber 24, the sewage storage tank 32 that is provided with on the end of the return pipe 31, the circulating water pump 33 that is provided with on the sewage storage tank 32, and one end is connected with the circulating water pump 33 , the other end is connected to the water delivery pipe 34 of the water inlet 27, and is also connected to the cooling spray nozzle 23 in addition. A connection port 17 is provided between the smoke exhaust pipe 22 and the casing 11 . The smoke pipe 15 includes a honeycomb pipe arranged on the pipe body and the bottom end of the pipe body. The cyclone sedimentation dust collector 05 includes a collection tank 51 and a dust discharge valve 52 provided at the bottom of the collection tank 51 ; the exhaust pipe 06 is provided at the top of the collection tank 51 . A maintenance window 07 is provided above the outer casing 11 on the front side of the mixing chamber 24 . The smoke exhaust pipe 22 is located at the front end of the junction where the water vapor recovery pipe 25 is connected to the steam-smoke mixing cooling device 02 , and is perpendicular to the center of the smoke exhaust pipe 22 . The smoke exhaust pipe 22 is composed of a plurality of thin pipes, and is connected with the connecting port by a flange. The smoke pipe 15 is made of a special material pipe, and the inside of the lower end is made of a plurality of special material pipes into a honeycomb shape, and directly extends into the flame top of the combustion layer of the incineration treatment chamber 12 . The length of the exhaust pipe 22 is 2/3 of the length of the mixing chamber 24 . The furnace body water cooling chamber 14 interface connected with the water vapor recovery pipe 25 is set as a conical water vapor outlet 26, water can be automatically supplied at the water inlet 27, and an adjustable air inlet 28 is provided opposite the water inlet 27. Adjustable air inlets 28 are provided on the four sides of the furnace body water cooling chamber 14 .

When in use, the circulating water pump 33 is installed on the sewage storage tank 32, and its operation is to pump the sewage in the sewage storage tank 32 to the cooling spray nozzle 23 of the steam-smoke mixing cooling device 02 through the water supply pipe 34 and control it to the water tank through the automatic water supply device. The water cooling chamber 14 of the furnace body is supplied with water, and the cooling spray nozzle 23 sprays water from four sides to the smoke exhaust pipe 22 through multiple sets of spray valves for cooling. And the cooling effect of the smoke exhaust pipe 22, and produce a large amount of water vapor. The water vapor generated in the water cooling chamber 14 of the furnace body enters the front end of the smoke exhaust pipe 22 of the steam-smoke mixing cooling device 02 through the top conical water vapor outlet 26 and the water vapor recovery pipe 25 by utilizing the gravitational force of the external ash discharge valve. The water vapor generated in the smoke mixing and cooling device 02 is mixed with the smoke, dust and ash discharged from the smoke exhaust pipe 22, and then enters the cyclone through the air induction pipe 04 connected to the smoke mixing and cooling device 02 on the cyclone settling dust collector 05. Settling dust collector 05, thus solving the problems of dust removal, smoke removal and partial sewage treatment.

What have been described above are only some embodiments of the present invention. For those skilled in the art, without departing from the inventive concept of the present invention, several modifications and improvements can be made, and these all belong to the protection scope of the present invention.

Claims (7)

1. A flue gas treatment system of a garbage disposal furnace, characterized in that it comprises a garbage incineration treatment furnace, a steam-smoke mixing cooling device provided on one side of the garbage incineration treatment furnace top, and a steam-smoke mixing cooling device is respectively provided with The sewage circulation device and the induced air pipe, and the cyclone settling dust collector on the induced air pipe and the exhaust pipe provided on the cyclone settling dust collector; The waste incineration treatment furnace includes a shell, an incineration treatment chamber arranged at the bottom of the shell, a flue gas buffer chamber and a water cooling chamber for the furnace body arranged sequentially on the top of the incineration treatment chamber, and an extension A smoke pipe to the flue gas buffer chamber; the flue gas buffer chamber is provided with an air inlet extending to the casing; The vapor-smoke mixing and cooling device includes an outer pipe body provided on one side of the housing, a smoke exhaust pipe communicating with the flue gas buffer chamber is arranged in the outer pipe body, and a smoke supply and exhaust pipe is arranged on the outer pipe body to carry out The cooled cooling spray nozzle, the mixing chamber provided inside the outer pipe body, and the water vapor recovery pipe that extends to the inside of the mixing chamber at one end and communicates with the water cooling chamber of the furnace body at the other end on the outer pipe body; the sewage circulation The device communicates with the mixing chamber. 2. The flue gas treatment system of a kind of garbage treatment furnace according to claim 1, characterized in that, the interface of the water cooling chamber of the furnace body connected with the water vapor recovery pipe is set as a conical water vapor outlet; in the water cooling chamber of the furnace body A water inlet is arranged on the top; air inlets are adjusted on the four surfaces of the water cooling chamber of the furnace body. 3. The flue gas treatment system of a garbage disposal furnace according to claim 2, wherein the sewage circulation device comprises a return pipe on the mixing chamber, a sewage storage tank provided at the end of the return pipe tank, a circulating water pump arranged on the sewage storage tank, and a water delivery pipe connected with the circulating water pump at one end and connected with the water inlet at the other end. 4 . The flue gas treatment system of a garbage disposal furnace according to claim 1 , wherein the smoke extraction pipe includes honeycomb pipes arranged on the pipe body and the bottom end of the pipe body. 5. The flue gas treatment system of a garbage disposal furnace according to claim 1, 2 or 3, wherein the cyclone sedimentation dust collector includes a collection tank, and an ash discharge valve provided at the bottom of the collection tank; The exhaust pipe is arranged on the top of the collection tank. 6. The flue gas treatment system of a garbage disposal furnace according to claim 1, 2 or 3, characterized in that a maintenance window is provided above the outer casing on the front of the mixing chamber. 7 . The flue gas treatment system of a garbage disposal furnace according to claim 1 , wherein the exhaust pipe is composed of a plurality of thin pipes, and is connected to the connection port by a flange. 8 .