CN210089427U

CN210089427U - Rock wool production quenching and tempering stove low temperature flue gas waste heat recovery device

Info

Publication number: CN210089427U
Application number: CN201920829205.9U
Authority: CN
Inventors: 李少晨; 奚军; 马继辉; 梁超琪
Original assignee: Shaanxi Is Energy-Conservation Science And Technology Co Ltd Incomparably
Current assignee: Shaanxi Is Energy-Conservation Science And Technology Co Ltd Incomparably
Priority date: 2019-06-04
Filing date: 2019-06-04
Publication date: 2020-02-18
Anticipated expiration: 2029-06-04

Abstract

The utility model discloses a rock wool production quenching and tempering stove low temperature flue gas waste heat recovery device, include: the utility model relates to a flue gas treatment technical field, the device reasonable in design, novel structure, the feature is good, can retrieve low temperature flue gas waste heat effectively, reaches environmental protection emission standard, and the exhaust gas after-combustion stove is installed to sack dust catcher, entry flue, expansion joint, waste heat recovery device, export flue, desulfurizing tower and flue gas, entry flue one end is installed on the sack dust catcher to install in sack dust catcher right-hand member, the flue gas after-combustion stove is installed on sack dust catcher right side, and connect through the entry flue, the expansion joint is installed on the flue gas after-combustion stove to be located flue gas after-combustion stove right-hand member, waste heat recovery device one end is installed on the expansion joint, export flue one end is installed on the waste heat recovery device other end, the desulfurizing tower is connected with the export flue other end, the utility model.

Description

Rock wool production quenching and tempering stove low temperature flue gas waste heat recovery device

Technical Field

The utility model relates to a flue gas treatment technical field specifically is a rock wool production quenching and tempering stove low temperature flue gas waste heat recovery device.

Background

The industrial production process can generate a large amount of flue gas with certain temperature, the flue gas is divided into high-temperature flue gas (more than 600 ℃), medium-temperature flue gas (230-600 ℃) and low-temperature flue gas (less than 230 ℃) according to the temperature, the waste heat utilization condition of the high-temperature flue gas is relatively good in the recycling of waste heat resources, the waste heat recovery utilization ratio of the medium-temperature flue gas (especially the low-temperature flue gas) is relatively low, the main reason is that the heat value of the high-temperature flue gas is relatively high and the utilization difficulty is low, so the waste heat utilization ratio of the part is high, the medium-temperature flue gas, especially the low-temperature flue gas, is relatively low in temperature, the heat value and the work capacity are also relatively low, and a proper heat user is difficult to find according to the principles of energy matching and capability gradient application, so that the low-temperature flue gas is directly discharged into the atmosphere, in view of the above, the present invention has been made in view of the above problems.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a rock wool production quenching and tempering stove low temperature flue gas waste heat recovery device has solved the low temperature flue gas because the temperature is lower, and the calorific value is less, and the acting capacity is also less, hardly finds suitable hot user, consequently just directly discharges the low temperature flue gas in the atmosphere, has caused the pollution of environment, has caused the problem of the waste of the energy simultaneously again.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a rock wool production quenching and tempering stove low temperature flue gas waste heat recovery device mainly includes: the device comprises a bag-type dust collector, an inlet flue, an expansion joint, a waste heat recovery device, an outlet flue, a desulfurizing tower and a flue gas reburning furnace, wherein one end of the inlet flue is installed on the bag-type dust collector and is installed at the right end of the bag-type dust collector, the flue gas reburning furnace is installed on the right side of the bag-type dust collector and is connected through the inlet flue, the expansion joint is installed on the flue gas reburning furnace and is located at the right end of the flue gas reburning furnace, one end of the waste heat recovery device is installed on the expansion joint, one end of the outlet flue is installed at the other end of the waste heat.

Preferably, the flue gas reburning furnace comprises: the device comprises a reburning combustor, a smoke-air premixer, a heat insulation combustor and a afterburning combustor;

the gas-air premixer is connected with the other end of the inlet flue, the afterburning burner is installed on the gas-air premixer and is positioned at the top end of the gas-air premixer, the adiabatic combustion chamber is connected with the bottom end of the gas-air premixer, and the afterburning burner is installed at the bottom end of the adiabatic combustion chamber.

Preferably, the flue gas dedusted by the bag-type dust remover is subjected to secondary combustion to generate high-temperature flue gas at 800-900 ℃, and the secondary combustion fuel is natural gas.

Preferably, the waste heat recovery device is a natural circulation water pipe waste heat boiler, and the heating surface is provided with a membrane water-cooled wall, a superheater, an evaporator and an economizer.

Preferably, the expansion joint is of a circular ring structure.

Preferably, the smoke and air premixer is of a cylindrical structure, the front section is made into a three-layer ring by a plurality of small pipe rings, smoke flows in the pipes, air flows between the pipes, reburning smoke and air are uniformly dispersed and sent into the hearth, and the rear section is a steel plate rolling cylinder.

Advantageous effects

The utility model provides a rock wool production quenching and tempering stove low temperature flue gas waste heat recovery device possesses following beneficial effect: the rock wool production conditioning furnace low-temperature flue gas waste heat recovery device is reasonable in design, novel in structure and good in environmental protection performance, can effectively recover low-temperature flue gas waste heat and reach the environmental protection emission standard, the generated CO gas is collected by the bag-type dust collector in the rock wool production process, the CO is combustible gas and can generate high-temperature flue gas with the temperature of 800-.

Drawings

FIG. 1 is a structure schematic diagram is looked at to rock wool production quenching and tempering stove low temperature flue gas waste heat recovery device's owner.

FIG. 2 is a rock wool production quenching and tempering furnace low temperature flue gas waste heat recovery device's local enlarged structure schematic diagram.

FIG. 3 is a rock wool production quenching and tempering stove low temperature flue gas waste heat recovery device's expansion joint part looks sideways at the schematic structure.

In the figure: 1. a bag-type dust collector; 2. an inlet flue; 3. a re-combustion burner; 4. a flue gas and air premixer; 5. a heat-insulating combustion chamber; 6. afterburning the burner; 7. an expansion joint; 8. a waste heat recovery device; 9. an outlet flue; 10. a desulfurizing tower.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

All the electrical components in the present application are connected with the power supply adapted to the electrical components through a wire, and an appropriate controller and an appropriate encoder should be selected according to actual conditions to meet control requirements, and specific connection and control sequences should be obtained.

Example (b): the utility model provides a technical scheme: according to the attached drawings 1-3 of the specification, the scheme is a rock wool production tempering furnace low-temperature flue gas waste heat recovery device, which mainly comprises: the device comprises a bag-type dust collector 1, an inlet flue 2, an expansion joint 7, a waste heat recovery device 8, an outlet flue 9, a desulfurizing tower 10 and a flue gas reburning furnace, and the connection relation is as follows:

inlet flue 2 one end is installed on the sack dust catcher to install in the sack dust catcher right-hand member, and the flue gas after-combustion stove is installed in the sack dust catcher right side, and connects through inlet flue 2, and expansion joint 7 is installed on the flue gas after-combustion stove, and is located the flue gas after-combustion stove right-hand member, and 8 one ends of waste heat recovery device are installed on

expansion joint

7, and 9 one ends of export flue are installed on 8 other ends of waste heat recovery device, and desulfurizing tower 10 is connected with the 9 other ends of export flue.

According to the general conditions, when in use, low-temperature flue gas discharged from the rock wool production tempering furnace is sucked into the bag-type dust collector 1 through the connecting flue for dust removal, the low-temperature flue gas after dust removal is introduced into the flue gas recombustion chamber to be mixed with combustion-supporting air, the mixture is combusted around the flame of the recombustion burner 3, the temperature after combustion is 800-, causes environmental pollution and energy waste.

Preferably, the flue gas reburning furnace further comprises: the device comprises a afterburning combustor 3, a smoke and air premixer 4, a heat insulation combustor 5 and a afterburning combustor 6;

the gas and air premixer 4 is connected with the other end of the inlet flue 2, the afterburning burner 3 is installed on the gas and air premixer 4 and is positioned at the top end of the gas and air premixer 4, the heat insulation combustion chamber 5 is connected with the bottom end of the gas and air premixer 4, and the afterburning burner is installed at the bottom end of the heat insulation combustion chamber 5.

As a preferred scheme, further, the flue gas dedusted by the bag-type dust remover 1 is subjected to re-combustion to generate high-temperature flue gas at 800-900 ℃, and the re-combustion fuel is natural gas.

Preferably, the waste heat recovery device 8 is a natural circulation water pipe waste heat boiler, and the heating surface includes a membrane water wall, a superheater, an evaporator and an economizer.

Preferably, the expansion joint 7 has an annular structure.

As a preferred scheme, further, the smoke and air premixer 4 is of a cylindrical structure, the front section is a three-layer ring formed by a plurality of small pipe rings, smoke flows in the pipes, air flows between the pipes, reburning smoke and air are uniformly dispersed and sent into a hearth, and the rear section is a steel plate rolling cylinder.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a rock wool production quenching and tempering stove low temperature flue gas waste heat recovery device mainly includes: sack cleaner (1), entry flue (2), expansion joint (7), waste heat recovery device (8), export flue (9), desulfurizing tower (10) and flue gas after-combustion stove, its characterized in that, entry flue (2) one end is installed on the sack cleaner to install in sack cleaner right-hand member, the flue gas after-combustion stove is installed in sack cleaner right side, and connect through entry flue (2), expansion joint (7) are installed on the flue gas after-combustion stove to be located the flue gas after-combustion stove right-hand member, waste heat recovery device (8) one end is installed on expansion joint (7), export flue (9) one end is installed on waste heat recovery device (8) other end, desulfurizing tower (10) are connected with export flue (9) other end.

2. The rock wool production tempering furnace low-temperature flue gas waste heat recovery device of claim 1, wherein the flue gas after-combustion furnace comprises: the device comprises a reburning combustor (3), a smoke-air premixer (4), a heat insulation combustor (5) and a afterburning combustor (6);

the gas-air pre-mixer (4) is connected with the other end of the inlet flue (2), the re-combustion burner (3) is installed on the gas-air pre-mixer (4) and is located at the top end of the gas-air pre-mixer (4), the heat insulation combustion chamber (5) is connected with the bottom end of the gas-air pre-mixer (4), and the afterburning burner is installed at the bottom end of the heat insulation combustion chamber (5).

3. The rock wool production conditioning furnace low-temperature flue gas waste heat recovery device as claimed in claim 1, wherein the flue gas dedusted by the bag-type dust remover (1) is subjected to re-combustion to generate 800-900 ℃ high-temperature flue gas, and the re-combustion fuel is natural gas.

4. The rock wool production conditioning furnace low-temperature flue gas waste heat recovery device as claimed in claim 1, wherein the waste heat recovery device (8) is a natural circulation water pipe waste heat boiler, and the heating surface comprises a membrane water wall, a superheater, an evaporator and an economizer.

5. The rock wool production tempering furnace low-temperature flue gas waste heat recovery device according to claim 1, wherein the expansion joint (7) is of a circular ring structure.

6. The rock wool production tempering furnace low-temperature flue gas waste heat recovery device according to claim 2, wherein the flue gas and air premixer (4) is of a cylindrical structure, the front section is made into a three-layer ring by a plurality of small pipe rings, flue gas flows in the pipes, air flows between the pipes, reburning flue gas and air are uniformly dispersed and sent into a hearth, and the rear section is a steel plate rolling cylinder.