CN209819573U

CN209819573U - Flue gas ultra-low temperature recovery unit

Info

Publication number: CN209819573U
Application number: CN201920362721.5U
Authority: CN
Inventors: 刘珍玉; 郭芹; 周金丽
Original assignee: Qingdao Haiwan Chemical Engineering Design & Research Institute Ltd
Current assignee: Qingdao Haiwan Chemical Engineering Design & Research Institute Ltd
Priority date: 2019-03-20
Filing date: 2019-03-20
Publication date: 2019-12-20
Anticipated expiration: 2029-03-20

Abstract

The utility model discloses a flue gas ultra-low temperature recovery unit, including the reaction cooling district, the chimney of the c cold district of reaction cooling district has one side of advancing the cigarette house steward through flue gas recovery pipe intercommunication, it has exhaust-heat boiler's air inlet to advance cigarette house steward one end intercommunication, exhaust-heat boiler's gas outlet intercommunication has the diffusion pipe, the one end intercommunication of diffusion pipe has the induced air device, the one end intercommunication that the induced air device was kept away from to the diffusion pipe has the diffusion valve, the part intercommunication that lies in induced air device on the diffusion pipe and between the diffusion valve has the circulating pipe, the one end of diffusion pipe and the bellows intercommunication of reaction cooling district are kept away from to the circulating pipe, the induced air device includes the induced duct, the inside fixedly connected with draught fan of induced duct, induced duct one end fixedly connected with sealing plug, the utility model relates to a flue gas recovery technical field. This flue gas ultra-low temperature recovery unit can the energy saving, reduces the pollution of flue gas to the environment to can alleviate staff and wash the burden.

Description

Flue gas ultra-low temperature recovery unit

Technical Field

The utility model relates to a flue gas recovery technical field specifically is a flue gas ultra-low temperature recovery unit.

Background

At present, an energy-saving and emission-reducing comprehensive working scheme of 'thirteen five' is provided, industrial energy conservation is enhanced, by 2020, the utilization efficiency and the cleanliness level of industrial energy are obviously improved, the unit increment energy consumption of industrial enterprises with scales is reduced by more than 18% compared with that in 2015, and the conventional flue gas recovery device comprises a pipeline unit, a power unit, a control unit and a cooling area; wherein the initial end of the pipeline unit is connected with a smoke outlet of the reaction device, and the tail end of the pipeline unit is connected with the aging device and the cooling device; the power unit is arranged on the pipeline unit and is used for acting according to a control signal of the control unit so as to guide the flue gas at the smoke exhaust port to be conveyed to the ageing device and the cooling device, and the cooling area of the reaction device is generally divided into four cooling areas, wherein the temperature of a cold area is about 300 ℃, the temperature of a cold area b is about 200 ℃, and the temperature of a cold area c is about 100 ℃. Among the present waste heat recovery project, mainly be the higher hot waste gas of the temperature to reaction unit's a cold district and b cold district carry out recycle, and the c cold district is because the temperature is lower, and no equipment yet can effectively retrieve this part exhaust gas temperature, and this part heat is wasted by vain, and the high temperature flue gas that the boiler discharged passes through the chimney directly to be discharged to the atmosphere simultaneously, still can aggravate greenhouse effect, causes the influence to the environment.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a flue gas ultra-low temperature recovery unit has solved among the present waste heat recovery project, mainly be to the higher hot waste gas of the temperature in reaction unit's a cold district and b cold district carry out recycle, and the c cold district is because the temperature is lower, do not have yet equipment can effectively retrieve this part exhaust gas temperature, this part heat is wasted by vain, the high temperature flue gas of boiler emission passes through the chimney directly to be discharged to the atmosphere simultaneously, still aggravate greenhouse effect, cause the problem of influence to the environment.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides an ultra-low temperature recovery unit of flue gas, includes the reaction cooling district, the chimney of the c cold district of reaction cooling district has one side of advancing the cigarette house steward through flue gas recovery pipe intercommunication, it has exhaust-heat boiler's air inlet to advance cigarette house steward one end intercommunication, exhaust-heat boiler's gas outlet intercommunication has the pipe of diffusing, the one end intercommunication of diffusing the pipe has the induced air device, the one end intercommunication that the induced air device was kept away from to the pipe of diffusing has the valve of diffusing, the partial intercommunication that lies in induced air device on the pipe of diffusing and between the valve of diffusing has the circulating pipe, the one end of diffusing the pipe and the bellows intercommunication of reaction cooling district are kept away from to the circulating pipe.

Preferably, the induced draft device comprises an induced draft pipe, an induced draft fan is fixedly connected inside the induced draft pipe, and a sealing plug is fixedly connected to one end of the induced draft pipe.

Preferably, one end of the induced draft tube, which is far away from the sealing plug, is communicated with the diffusing tube through a sealing sleeve.

Preferably, the induced air direction of the induced draft fan is communicated with one end of the blow-off valve towards the blow-off pipe.

Preferably, the flue gas recovery pipe is communicated with a control valve.

Preferably, the circulating pipe is communicated with a circulating valve.

(III) advantageous effects

The utility model provides a flue gas ultra-low temperature recovery unit. The method has the following beneficial effects:

(1) this ultra-low temperature recovery device of flue gas, the chimney of the c cold district through the reaction cooling district has one side of advancing the cigarette house steward through flue gas recovery pipe intercommunication, it has exhaust-heat boiler's air inlet to advance cigarette house steward one end intercommunication, exhaust-heat boiler's gas outlet intercommunication has the diffuse pipe, the one end intercommunication of diffuse pipe has the induced air device, the one end intercommunication that the induced air device was kept away from to the diffuse pipe has the diffuse valve, the part intercommunication that lies in induced air device on the diffuse pipe and diffuse between the valve has the circulating pipe, the one end of diffuse pipe and the bellows intercommunication of reaction cooling district are kept away from to the circulating pipe, can discharge the heat in the waste gas to the c cold district and carry out recycle, have reached the energy saving, reduce the purpose of the pollution of fume emission to the environment.

(2) This flue gas ultra-low temperature recovery unit has the induced air device through the one end intercommunication of diffusing the pipe, the induced air device includes the induced duct, the inside fixedly connected with draught fan of induced duct, induced duct one end fixedly connected with sealing plug can avoid waste gas through the induced air device with the induced air device setting in the one end of diffusing the pipe, causes the pollution to the induced air device, can alleviate and wash the burden.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the air inducing device of the present invention.

In the figure: the system comprises a reaction cooling zone 1, a flue gas recovery pipe 2, a flue gas inlet main pipe 3, a waste heat boiler 4, a diffusion pipe 5, an induced draft device 6, a diffusion valve 7, a circulation pipe 8, a sealing sleeve 9, a control valve 10, a circulating valve 11, an induced draft pipe 61, an induced draft fan 62 and a sealing plug 63.

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.

Referring to fig. 1-2, the present invention provides a technical solution: the utility model provides an ultra-low temperature recovery unit of flue gas, includes reaction cooling zone 1, and the chimney of the c cold district of reaction cooling zone 1 has one side of advancing cigarette house steward 3 through 2 intercommunications of flue gas recovery pipe, advances the air inlet that 3 one end intercommunications of cigarette house steward have exhaust-heat boiler 4, conveniently utilizes the exhaust-heat boiler in the c cold district, exhaust-heat boiler 4's gas outlet intercommunication has diffusing pipe 5, and diffusing pipe 5's one end intercommunication has induced air device 6, conveniently accelerates the inside air flow rate of diffusing pipe 5, and diffusing pipe 5 keeps away from the one end intercommunication of induced air device 6 has diffusion valve 7, and diffusing pipe 5 is last to be located induced air device 6 and the partial intercommunication between diffusion valve 7 has circulating pipe 8, and circulating pipe 8 keeps away from diffusing pipe 5's one end and reaction cooling zone 1's bellows intercommunication.

The induced draft device 6 comprises an induced draft pipe 61, an induced draft fan 62 is fixedly connected inside the induced draft pipe 61, and a sealing plug 63 is fixedly connected to one end of the induced draft pipe 61, so that air pressure difference is formed between the inside of the diffused pipe and the air outlet of the waste heat boiler and between the diffused pipe and the circulating pipe conveniently, and the flue gas flows more quickly and smoothly.

One end of the induced duct 61 far away from the sealing plug 63 is communicated with the diffusing pipe 5 through a sealing sleeve 9.

The induced air of the induced draft fan 62 flows toward one end of the blow-off valve 7 communicating with the blow-off pipe 5.

The flue gas recovery pipe 2 is communicated with a control valve 10.

The circulating pipe 8 is communicated with a circulating valve 11.

When in use, the waste gas in the reaction cooling zone 1 is discharged through the flue gas recovery pipe 2 and enters the waste heat boiler 4 through the flue gas inlet main pipe 3, and exchanges heat with cold water in the waste heat boiler 4, the low-temperature gas after heat exchange enters the diffusing pipe 5, the trend of the low-temperature gas is controlled by the diffusing valve 7 and the circulating valve 11, when the diffusion valve 7 is opened and the circulating valve 11 is closed, the low-temperature gas is discharged out of the diffusion pipe 5 through the diffusion valve 7, when the diffusion valve 7 is closed and the circulating valve 11 is opened, the low-temperature gas enters the air box of the reaction cooling zone 1 through the circulating valve 11 and the circulating pipe 8 to realize secondary utilization, when the air inducing device 6 works, the induced draft fan 62 blows out the air in the diffusion pipe 5, the air pressure in the diffusion pipe 5 is reduced to generate suction on the air outlet of the waste heat boiler 4, the internal waste gas flow is faster, and the flow speed of the waste gas in the device can be adjusted by adjusting the wind power of the induced draft fan 62.

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.

Claims

1. The utility model provides a flue gas ultra-low temperature recovery unit, includes reaction cooling zone (1), its characterized in that: the chimney of the c cold district of reaction cooling district (1) has one side of advancing cigarette house steward (3) through flue gas recovery pipe (2) intercommunication, it has the air inlet of exhaust-heat boiler (4) to advance cigarette house steward (3) one end intercommunication, the gas outlet intercommunication of exhaust-heat boiler (4) has diffuse pipe (5), the one end intercommunication of diffuse pipe (5) has induced air device (6), the one end intercommunication that induced air device (6) were kept away from in diffuse pipe (5) has diffuse valve (7), the part intercommunication that lies in between induced air device (6) and diffuse valve (7) on diffuse pipe (5) has circulating pipe (8), the one end that diffuse pipe (5) were kept away from in circulating pipe (8) communicates with the bellows of reaction cooling district (1).

2. The ultra-low temperature flue gas recovery device of claim 1, wherein: the induced draft device (6) comprises an induced draft pipe (61), an induced draft fan (62) is fixedly connected inside the induced draft pipe (61), and one end of the induced draft pipe (61) is fixedly connected with a sealing plug (63).

3. The ultra-low temperature flue gas recovery device of claim 2, wherein: one end of the induced draft tube (61), which is far away from the sealing plug (63), is communicated with the diffusing tube (5) through a sealing sleeve (9).

4. The ultra-low temperature flue gas recovery device of claim 2, wherein: the induced draft wind direction of draught fan (62) is towards the one end of diffusing pipe (5) intercommunication diffusion valve (7).

5. The ultra-low temperature flue gas recovery device of claim 1, wherein: the smoke gas recovery pipe (2) is communicated with a control valve (10).

6. The ultra-low temperature flue gas recovery device of claim 1, wherein: the circulating pipe (8) is communicated with a circulating valve (11).