CN210631917U

CN210631917U - Dispersed flue gas recovery device for power plant

Info

Publication number: CN210631917U
Application number: CN201921402885.2U
Authority: CN
Inventors: 孙德创; 张凯; 刘帅
Original assignee: Datang Yuncheng Power Generation Co Ltd
Current assignee: Datang Yuncheng Power Generation Co Ltd
Priority date: 2019-08-27
Filing date: 2019-08-27
Publication date: 2020-05-29
Anticipated expiration: 2029-08-27

Abstract

The utility model discloses a dispersed flue gas recovery device for power plant, which comprises a shell, a gas storage tank and a PLC, one side of the lower half part of the gas storage tank is fixedly connected with an electric flow control valve through a pipe connector, the top part of the gas storage tank is fixedly provided with a pressure sensor through a joint, a second PVC filler is fixedly arranged above a second support frame through a joint, a first PVC filler is fixedly arranged above the first support frame through a joint, a second water diversion pipe is fixedly arranged at the bottom part of a water pipe fixing frame through a joint, the utility model discloses a first PVC filler and a second PVC filler which are arranged in the traditional spray desulfurization area greatly increase the contact area of flue gas and lime water, improve the flue gas desulfurization rate while saving lime water, and stably discharge the desulfurized flue gas through the regulation of the gas storage tank through the arranged gas storage tank and the electric flow control valve, so that the flue gas in the desulfurization device can stably enter and exit.

Description

Dispersed flue gas recovery device for power plant

Technical Field

The utility model relates to a power plant technical field specifically is a dispersed flue gas recovery unit that power plant used.

Background

A large amount of smoke dust, sulfur dioxide and nitrogen oxide discharged by the combustion of raw coal in a thermal power plant bring great harm to the atmospheric environment and the health of people, the content of the smoke dust in the atmospheric environment is rapidly increased due to the discharge of the smoke dust, which is one of the reasons for aggravating the current haze, the human respiratory tract is greatly influenced after being in the atmospheric environment for a long time, the smoke discharged by a power plant can also influence the ecological environment, the falling of the smoke dust can cause the reduction of the crop yield during growth, sulfur dioxide can erode buildings and plants, and therefore dispersed smoke of the power plant needs to be recovered and purified,

however, the traditional dispersed flue gas recovery device for power plants has some disadvantages in the using process, such as:

1. traditional power plant is with dispersion flue gas recovery unit mainly gets rid of the sulphide in the flue gas when purifying the flue gas that gets into the device, generally adopts to spray lime wash and neutralizes the acidic sulphide in the flue gas, and the flue gas is inadequately contacted with the spray water at the in-process that sprays, leads to the flue gas desulfurization rate to not reach the emission requirement.

2. Traditional power plant spills flue gas recovery unit when carrying out desulfurization purification to dispersion flue gas, because the pressure of flue gas constantly changes in the pipeline, so big time spent when entering into the inside flue gas volume of desulfurization purifier, and the pressure that sprays the sulphur removal water is generally invariable, causes the flue gas volume big time desulfurization rate not up to standard, and the condition of the extravagant old lin sulphur removal water of flue gas volume hour takes place.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a dispersed flue gas recovery unit that power plant used to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a dispersed flue gas recovery device for a power plant comprises a shell, a gas storage tank and a PLC (programmable logic controller), wherein one side of the bottom of the shell is connected with a water collecting tank through pouring, a clean flue gas outlet is formed in the top of the shell, the side, away from the water collecting tank, of the inner wall of the bottom of the shell is fixedly provided with the gas storage tank through welding, one side of the upper half part of the gas storage tank is fixedly connected with an original flue gas inlet pipe through a pipe joint, one side of the lower half part of the gas storage tank is fixedly connected with an electric flow regulating valve through a pipe joint, the top of the gas storage tank is fixedly provided with a pressure sensor through clamping, one side of the outer part of the shell is fixedly provided with a water pump through a bolt, one end of a water inlet of the water pump is connected with a desulfurized lime, a second PVC filler is fixedly arranged above the second support frame through clamping, a first support frame is fixedly arranged on the inner wall of the shell corresponding to the upper part of the second PVC filler through bolts, the upper part of the first supporting frame is fixedly installed with a first PVC filler through clamping, the lower part of the first supporting frame is fixedly installed with a first water distributing pipe through clamping, a water pipe fixing frame is fixedly arranged on the inner wall of the shell corresponding to the upper part of the first PVC filler through bolts, the bottom of the water pipe fixing frame is fixedly provided with a second water dividing pipe through clamping, one end of the first water dividing pipe and one end of the second water dividing pipe penetrating through the shell are respectively connected with the main water pipe through pipe joints, the pressure sensor signal output end is electrically connected with the PLC signal input end, the electric flow control valve signal input end is electrically connected with the PLC signal output end, and the water pump signal input end is electrically connected with the PLC signal output end.

Furthermore, the first water distribution pipe and the second water distribution pipe are respectively provided with three water distribution pipes, and spray heads are fixedly installed at the bottoms of the first water distribution pipe and the second water distribution pipe through pipe joints, so that the desulfurized lime water can be conveniently and uniformly sprayed to the inner part of the shell.

Furthermore, the outer surfaces of the water pipe fixing frame, the first supporting frame and the second supporting frame are sprayed with antirust paint for rust prevention.

Furthermore, the sealing gasket is installed at the joint of the first water distribution pipe, the second water distribution pipe and the original smoke inlet pipe and the shell, and is used for preventing smoke from leaking out of the connecting gap.

Furthermore, a water pumping pipe is pre-buried at the bottom of the water collecting tank and used for pumping water away from the inside of the water collecting tank.

Furthermore, the first PVC filler and the second PVC filler are honeycomb-shaped, so that the flue gas and the desulfurized lime water can be kept in a larger contact area, the lime water can be saved, and the flue gas desulfurization rate can be improved.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a pack at the traditional first PVC that sprays the desulfurization district setting and pack with the second PVC for desulfurization lime wash contacts with the flue gas in the honeycomb structure of packing inside, and flue gas and lime wash area of contact greatly increased improve the flue gas desulfurization rate when saving lime wash.

2. The utility model discloses a gas holder and the electric flow control valve that set up for the regulation of desulfurated flue gas through the gas holder is stabilized and is discharged, according to the opening size of flue gas pressure's size control electric flow control valve, makes the inside flue gas business turn over of desulphurization unit stable.

Drawings

FIG. 1 is a schematic sectional view of the overall front view structure of the present invention;

FIG. 2 is a schematic sectional view of the overall left-side view structure of the present invention;

FIG. 3 is a schematic sectional view of the overall top view structure of the present invention;

fig. 4 is a schematic view of the electronic component connection control system of the present invention.

In FIGS. 1-4: 1-raw flue gas inlet pipe; 2-a main water pipe; 3-a housing; 4-a pressure sensor; 5-a first water dividing pipe; 6-a second water distribution pipe; 7-purified flue gas outlet; 8-water pipe fixing frame; 9-a first PVC filler; 10-a first support frame; 11-a second PVC filler; 12-a second support frame; 13-a water collecting tank; 14-an electric flow regulating valve; 15-a gas storage tank; 16-a water pump; 17-PLC.

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. 1-4, the present invention provides a technical solution: the utility model provides a dispersed flue gas recovery unit that power plant used, includes shell 3, gas holder 15 and PLC17, 3 bottom one sides of shell are through pouring connection and catch basin 13 for collect the shower water, clean flue gas outlet 7 has been seted up at 3 tops of shell for discharge flue gas after the desulfurization, the inner wall is kept away from catch basin 13 one side in 3 bottoms of shell and is installed gas holder 15 through welded fastening, is used for adjusting the flue gas flow stability.

Former flue gas intake pipe 1 of first half one side of gas holder 15 through pipe connector fixedly connected with, 15 lower half one sides of gas holder 15 are through pipe connector fixedly connected with electric flow control valve 14, there is pressure sensor 4 at 15 tops of gas holder through joint fixed mounting, there is water pump 16 outside one side of shell 3 through bolt fixed mounting, water pump 16 water inlet one end is connected with desulfurization lime agent holding box through the water pipe, there is main water pipe 2 water pump 16 delivery port one end through pipe connector fixed mounting, former flue gas enters into gas holder 15 through former flue gas intake pipe 1, through the switch size of PLC17 control electric flow control valve 14 behind the pressure in the 4 response gas holders 15 of pressure sensor, make the flue gas flow that gets into in the desulphurization unit remain stable.

The inner wall of the shell 3 is provided with a second supporting frame 12 corresponding to the upper part of the gas storage tank 15 through bolt fixed mounting, the upper part of the second supporting frame 12 is provided with a second PVC filler 11 through a clamping fixed mounting, the inner wall of the shell 3 is provided with a first supporting frame 10 corresponding to the upper part of the second PVC filler 11 through bolt fixed mounting, the upper part of the first supporting frame 10 is provided with a first PVC filler 9 through a clamping fixed mounting, the lower part of the first supporting frame 10 is provided with a first water distributing pipe 5 through a clamping fixed mounting, the upper part of the shell 3 corresponding to the first PVC filler 9 is provided with a water pipe fixed frame 8 through bolt fixed mounting, the bottom of the water pipe fixed frame 8 is provided with a second water distributing pipe 6 through a clamping fixed mounting, the first water distributing pipe 5 and the second water distributing pipe 6 penetrate through one end of the shell 3 to be respectively connected with the main water pipe 2 through pipe joints, the internal honeycomb structure of the first PVC filler 9 and the second PVC filler 11 is used for Area, thereby guaranteeing the desulfurization rate of the flue gas while saving the lime water.

The signal output end of the pressure sensor 4 is electrically connected with the signal input end of the PLC17, the signal input end of the electric flow control valve 14 is electrically connected with the signal output end of the PLC17, and the signal input end of the water pump 16 is electrically connected with the signal output end of the PLC 17.

First minute water pipe 5 and second minute water pipe 6 respectively have three, there is the shower head first

minute water pipe

5 and 6 bottoms of second minute water pipe through coupling fixed mounting, be convenient for evenly spray desulfurization lime wash inside shell 3, water pipe fixed frame 8, first braced

frame

10 and 12 outer surface spraying of second braced frame have anti-rust paint, be used for rust-proofly, first minute water pipe 5, sealed the pad is installed with shell 3 junction to second minute water pipe 6 and former flue gas intake pipe 1, be used for preventing that the flue gas from spilling from the joint line, the pre-buried drinking-water pipe in catch basin 13 bottom, be used for taking out the inside water of catch basin, first PVC packs 9 and the inside honeycomb that is of second PVC packing, be used for guaranteeing that flue gas and desulfurization lime wash keep great area, be convenient for improve the flue gas desulfurization rate when saving lime wash.

The working principle is as follows: when the device is used, raw flue gas generated by a power plant is conveyed into the gas storage tank 15 through the raw flue gas inlet pipe 1, when the flow of flue gas in the raw flue gas inlet pipe 1 is large, the pressure in the gas storage tank 15 is increased, the pressure sensor 4 senses the increase of the pressure in the gas storage tank 15 and sends a signal to the PLC17, the PLC receives the signal and controls the valve of the electric flow regulating valve 14 to be closed, similarly, when the flow of flue gas in the raw flue gas inlet pipe 1 is small, the valve of the electric flow regulating valve 14 is controlled to be opened to stabilize the flow of flue gas entering the desulfurization device, the raw flue gas with stable flow is discharged from the electric flow regulating valve 14 into the desulfurization device and rises under the self-gravity of the flue gas, the water pump is started at the moment, desulfurized lime water is sprayed into the honeycomb structures inside the first PVC filler 9 and the second PVC filler 11 through the main water pipe 2, the first water diversion pipe 5 and the second water, greatly increased the area of contact of flue gas and lime wash, flue gas rises this moment and lime wash contact, separates the sulphide in the flue gas under the effect of lime wash, and the lime wash after the separation down falls into the catch basin 13 and is convenient for follow-up preparation gypsum, and the flue gas after the separation continues to rise and discharges from clean flue gas outlet 7 and accomplish whole separation process.

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.

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 dispersed flue gas recovery unit that power plant used, includes shell (3), gas holder (15) and PLC (17), shell (3) bottom one side is through pouring connection and catch basin (13), clean flue gas outlet (7) have been seted up at shell (3) top, shell (3) bottom inner wall is kept away from catch basin (13) one side and is installed gas holder (15), its characterized in that through welded fastening: the device is characterized in that an original flue gas inlet pipe (1) is fixedly connected to one side of the first half part of the gas storage tank (15) through a pipe joint, an electric flow regulating valve (14) is fixedly connected to one side of the lower half part of the gas storage tank (15) through a pipe joint, a pressure sensor (4) is fixedly mounted at the top of the gas storage tank (15) through a joint, a water pump (16) is fixedly mounted on one side of the outer part of the shell (3) through a bolt, one end of a water inlet of the water pump (16) is connected with a desulfurized lime agent containing box through a water pipe, a main water pipe (2) is fixedly mounted at one end of a water outlet of the water pump (16) through a pipe joint, a second supporting frame (12) is fixedly mounted on the inner wall of the shell (3) corresponding to the upper part of the gas storage tank (15) through a bolt, a second PVC filler (11) is fixedly, the upper part of the first supporting frame (10) is fixedly arranged with a first PVC filler (9) through clamping, a first water diversion pipe (5) is fixedly arranged below the first supporting frame (10) through clamping, a water pipe fixing frame (8) is fixedly arranged on the inner wall of the shell (3) corresponding to the upper part of the first PVC filler (9) through bolts, the bottom of the water pipe fixing frame (8) is fixedly provided with a second water dividing pipe (6) through clamping, the first water dividing pipe (5) and the second water dividing pipe (6) penetrate through one end of the shell (3) and are respectively connected with the main water pipe (2) through pipe joints, the signal output end of the pressure sensor (4) is electrically connected with the signal input end of the PLC (17), the signal input end of the electric flow regulating valve (14) is electrically connected with the signal output end of the PLC (17), and the signal input end of the water pump (16) is electrically connected with the signal output end of the PLC (17).

2. The dispersed flue gas recovery device for power plants according to claim 1, characterized in that: the spray head is fixedly arranged at the bottoms of the first water distribution pipe (5) and the second water distribution pipe (6) through pipe joints.

3. The dispersed flue gas recovery device for power plants according to claim 1, characterized in that: and antirust paint is sprayed on the outer surfaces of the water pipe fixing frame (8), the first supporting frame (10) and the second supporting frame (12).

4. The dispersed flue gas recovery device for power plants according to claim 1, characterized in that: and sealing gaskets are arranged at the joints of the first water distribution pipe (5), the second water distribution pipe (6), the raw flue gas inlet pipe (1) and the shell (3).

5. The dispersed flue gas recovery device for power plants according to claim 1, characterized in that: and a water pumping pipe is embedded at the bottom of the water collecting tank (13).

6. The dispersed flue gas recovery device for power plants according to claim 1, characterized in that: the first PVC filler (9) and the second PVC filler (11) are honeycomb-shaped.