CN116173695A - Flue gas purification deacidification processing system - Google Patents

Abstract

The application discloses flue gas purification deacidification processing system includes: the conveying device comprises a second storage bin, a second arch breaker, a plurality of conveyors and ejectors; the first storage bin is connected above the first arch breaker, the outlet of the first arch breaker is connected with the inlet of the grinding device, the outlet of the grinding device is connected with the second storage bin, the second storage bin is connected above the second arch breaker, a plurality of conveyors are connected below the second arch breaker, the fine particle materials processed by the second arch breaker are transmitted to the ejector by the plurality of conveyors, and finally are discharged by the ejector to react with waste gas; the conveying directions of conveying pipelines of the plurality of conveyors are different, and a multidirectional conveying outlet is formed; the flue gas purification deacidification treatment system provided by the invention grinds and refines large-particle calcium hydroxide for multiple times, and improves the reaction rate of sodium hydroxide.

Description

A flue gas purification and deacidification treatment system

technical field

The invention relates to the field of waste gas treatment, in particular to a flue gas purification and deacidification treatment system.

Background technique

At present, the power plant adopts the integrated system technology of high-efficiency collaborative removal of various pollutants to make the emission concentration of air pollutants reach the emission limit of the natural gas turbine unit standard. When the existing incineration plant adopts the dry deacidification process as the flue gas purification method, Generally use conventional calcium hydroxide as deacidification agent, or directly purchase 600 mesh sodium bicarbonate as deacidification agent, conventional sodium hydroxide deacidification efficiency is low (hydrogen chloride removal rate 80%, sulfur dioxide removal rate 60%), and 600 The purchase cost of sodium bicarbonate is relatively high, and 600-mesh sodium bicarbonate is easy to absorb moisture. When the storage time exceeds 3 days, the sodium bicarbonate storage tank is prone to clogging, which will lead to unstable operation of the system. Grinding equipment generally adopts one machine and one line, that is, one grinding equipment, one delivery point to transport materials, single-point dosing, and only one delivery line. When the delivery pipeline fails, it can only be shut down for maintenance, which will affect the work progress.

Contents of the invention

In view of the above-mentioned problems in the prior art, the object of the present invention is to provide a flue gas purification and deacidification treatment system.

The specific technical scheme is as follows:

A flue gas purification and deacidification treatment system is designed, including: a storage device, a grinding device, and a delivery device, the storage device includes a first storage bin and a first arch breaker, the delivery device includes a second storage bin, Second arch breaker, several conveyors and injectors;

The first storage bin is connected above the first arch breaker, the outlet of the first arch breaker is connected to the inlet of the grinding device, the outlet of the grinding device is connected to the second storage bin, the The second storage bin is connected above the second arch breaker, and several conveyors are connected below the second arch breaker, and the fine-grained materials processed by the second arch breaker are conveyed by several The conveyor is transported to the injector, and finally discharged from the injector to react with the exhaust gas;

The conveying pipelines of several conveyors have different conveying orientations, forming a multi-directional conveying outlet.

Preferably, the storage device further includes a first delivery pipe, and the outlet of the first arch breaker is connected to the inlet of the first delivery pipe.

Preferably, the grinding device includes a classifying grinder, and the outlet of the first conveying pipe is connected to the inlet of the classifying grinder.

Preferably, the pipeline connected to the outlet of the classification grinder is connected to the inlet of the second storage bin.

Preferably, the second arch breaker includes a conical outer cylinder, a stirring rod and a lower outlet, and the lower outlet is connected above the inlets of several conveyors.

Preferably, the injector includes a first inlet, a second inlet and an outlet pipe, and the outlet of the conveyor is connected to the first inlet.

Preferably, the second inlet is connected to the output end of the first fan.

Preferably, the outlet pipe is connected to the fourth inlet of the reaction tank.

Preferably, the reaction tank further includes a third inlet and a gas outlet, and the third inlet is connected to a flue gas pipeline.

Preferably, a pulse dust collector is connected above the first storage bin and the second storage bin, and the pulse dust collector above the second storage bin is connected to a second fan.

The above technical solution has the following advantages or beneficial effects:

The present invention proposes a flue gas purification and deacidification treatment system. The first arch breaker, the grinding device and the second arch breaker perform multiple grinding and refinement of large-grain calcium hydroxide to improve the reaction rate of sodium hydroxide, and because the second arch breaker There are several conveyors connected under the second arch breaker, and the transmission pipelines of several conveyors have different conveying directions, forming a multi-directional conveying outlet, so as to avoid affecting the work progress when a conveying line fails.

Description of drawings

Fig. 1 is the schematic diagram of the flue gas purification and deacidification treatment system proposed by the present invention;

Fig. 2 is the sectional view of the second arch breaker of the flue gas purification and deacidification treatment system proposed by the present invention;

Fig. 3 is a top view of the second arch breaker of the flue gas purification and deacidification treatment system proposed by the present invention.

illustration:

First storage bin 1, classifying grinder 2 _, second storage bin 3, reaction tank 4 _, first arch breaker 11, first delivery pipe 12, second arch breaker 31, injector 32, conveyor 33 _, the first fan 35, the second fan 36, the third inlet 41, the air outlet 42, the fourth inlet 43 _, the first inlet 321, the second inlet 322, and the outlet pipe 323.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

Referring to Figures 1-3, a flue gas purification and deacidification treatment system includes: a storage device, a grinding device, and a conveying device. The storage device includes a first storage bin 1 and a first arch breaker 11, and the conveying device includes a second Storage bin 3, a second arch breaker 31, several conveyors 33 and injectors 32;

The first storage bin 1 is connected above the first arch breaker 11, the outlet of the first arch breaker 11 is connected to the inlet of the grinding device, the outlet of the grinding device is connected to the second storage bin 3, and the second storage bin 3 is connected to the A plurality of conveyors 33 are connected above the second arch breaker 31 and below the second arch breaker 31, and the fine-grained materials processed by the second arch breaker 31 are transported to the injector 32 by several conveyors 33, and finally sent to the injector 32 by the injector. The device 32 discharges and reacts with the exhaust gas;

The conveying pipelines of several conveyors 33 have different conveying orientations, forming multi-directional conveying outlets.

The storage device also includes a first delivery pipe 12 , the outlet of the first arch breaker 11 is connected to the inlet of the first delivery pipe 12 .

The raw material of 80-200 mesh sodium bicarbonate is directly used in the first storage bin 1, the cost is relatively low, and the storage time can reach more than 10 days.

The grinding device includes a classifying grinder 2 , and the outlet of the first conveying pipe 12 is connected to the inlet of the classifying grinder 2 .

The pipeline connected to the outlet of the classification grinder 2 is connected to the inlet of the second storage bin 3 .

Referring to Figures 2-3, the second arch breaker 31 includes a conical outer cylinder, a stirring rod and a lower outlet, and the lower outlet is connected above the inlets of several conveyors 33; the stirring rod is connected with several multi-directional stirring blades , used to strengthen the grinding of product particle size.

The sodium bicarbonate raw material is preliminarily scattered through the first arch breaker 11 and falls into the first conveying pipe 12 below, and is transported to the classifying grinder 2 from the first conveying pipe 12, and obtains 600% after being subjected to secondary dispersion in the classifying grinder 2. Mesh sodium bicarbonate is subjected to the suction force of the second blower fan 36 subsequently, enters in the second storage bin 3 for use along pipeline, and the 600 order sodium bicarbonate after grinding is in temporary storage state in the second storage bin 3, The storage time is less than 1 day.

When 600-mesh sodium bicarbonate needs to be used, the outlet of the second storage bin 3 is opened, the material falls into the second arch breaker 31, and the final stirring is carried out to refine and break up, and the stirring rod of the second arch breaker 31 stops Finally, the discharge port below is opened, and the material evenly falls into the inlets arranged side by side of several conveyors 33; the conveyor 33 selects a screw conveyor for use.

The screw conveyor controls the screw shaft to deliver the refined material to the injector 32 at different positions. Refer to Figure 3. At this time, the material can be conveyed by multiple conveying screws and enter the conveying system, so as to realize one machine with two lines to one machine with four lines. , improve work efficiency while avoiding that a transmission line will affect the work progress when the transmission pipeline fails.

The ejector 32 includes a first inlet 321 , a second inlet 322 and an outlet pipe 323 , and the outlet of the conveyor 33 is connected to the first inlet 321 .

The second inlet 322 is connected to the output end of the first fan 35 .

The outlet pipe 323 is connected to the fourth inlet 43 of the reaction tank 4. The reaction tank 4 also includes a third inlet 41 and a gas outlet 42. The third inlet 41 is connected to the flue gas pipeline. Good materials are provided with thrust provided by the first fan 35 and enter the reaction tank 4 through the outlet pipe 323 and the fourth inlet 43 in turn, and react with the flue gas introduced from the third inlet 41, and perform dry powder purification treatment on the flue gas, and the treated gas It is discharged through the air outlet 42.

Both the first storage bin 1 and the second storage bin 3 are connected with a pulse dust collector, and the pulse dust collector above the second storage bin 3 is connected with the second fan 36; The powder mixed in the gas discharged from machine 2 is collected as much as possible, and added to the second material storage bin for centralized storage.

The first storage bin 1 and the second storage bin 3 are respectively provided with detection devices, such as infrared sensors, which are used to send signals to the controllers of the outlet baffles of the first storage bin 1 and the second storage bin 3, and The first arch breaker 11 _, the second arch breaker 31 and the classification grinder 2;

When the detection device detects that the material in the first storage bin 1 is reduced and the height drops to a specified position, a feedback signal is sent to the controller of the outlet baffle of the first storage bin 1, and the outlet baffle of the first storage bin 1 moves and closes. At the same time, the first arch breaker 11 receives the signal, and after a period of delay, it stops stirring, and removes the baffle plate at the outlet of the first arch breaker 11, and the materials dispersed for the first time fall into the first conveying pipe 12, along the first arch breaker 12. A conveying pipe 12 slides into the classifying grinder 2, and the classifying grinder 2 starts after receiving the signal transmitted by the detection device in the first storage bin 1 with a delay for a period of time to carry out secondary dispersion of the material.

After the material stored in the second storage bin 3 reaches the specified amount, the detection device in the second storage bin 3 feeds back a signal to the controller of the outlet baffle of the second storage bin 3, and the second storage bin 3 The outlet baffle is moved and opened, and the materials stirred in the second arch breaker 31 are added to control the dosage of the ground products entering the second arch breaker 31 to ensure that the flue gas is stable and up to standard; this advanced treatment system The controller adopts PLC automatic control system and can be connected to DCS control system.

Working principle: Referring to Fig. 1-Fig. 3, the sodium bicarbonate raw material passes through the first arch breaker 11 and falls into the first conveying pipe 12 below, and is transferred from the first conveying pipe 12 to the classifying grinder 2, where it is classified and ground The machine 2 is subjected to secondary dispersion, and then is attracted by the second fan 36, and enters the second storage bin 3 along the pipeline for use, the outlet of the second storage bin 3 is opened, and the material falls into the second arch breaker 31 During the last stirring, refinement and dispersal, after the stirring rod of the second arch breaker 31 stops, the lower discharge port is opened, and the materials evenly fall into the inlets arranged side by side of several conveyors 33; the conveyor 33 will fine The melted material is delivered to the ejector 32 at different positions. At this time, the material can be conveyed into the conveying system by multiple conveying screws, so as to realize one machine with two lines to one machine with four lines, improve work efficiency and avoid one conveying line from being conveyed When the pipeline fails, it will affect the progress of the work.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the implementation and protection scope of the present invention. For those skilled in the art, they should be able to realize that all equivalents made by using the description and illustrations of the present invention The solutions obtained by replacement and obvious changes shall all be included in the protection scope of the present invention.

Claims (10)

1. A flue gas purification and deacidification treatment system, characterized in that it comprises: a storage device, a grinding device, a conveying device, and the storage device includes a first storage bin (1) and a first arch breaker (11), The conveying device comprises a second storage bin (3), a second arch breaker (31), several conveyors (33) and injectors (32); The first storage bin (1) is connected above the first arch breaker (11), the outlet of the first arch breaker (11) is connected to the inlet of the grinding device, and the outlet of the grinding device is connected to the The second storage bin (3), the second storage bin (3) is connected above the second arch breaker (31), the second arch breaker (31) is connected with several The conveyor (33), the fine particle material processed by the second arch breaker (31) is transported to the injector (32) by several conveyors (33), and finally by the injector ( 32) Exhaust reacts with exhaust gas; The conveying pipelines of the several conveyors (33) have different conveying orientations, forming multi-directional conveying outlets. 2. The flue gas purification and deacidification treatment system according to claim 1, characterized in that: the storage device also includes a first delivery pipe (12), and the outlet of the first arch breaker (11) is connected to the The inlet of the first delivery pipe (12). 3. The flue gas purification and deacidification treatment system according to claim 2, characterized in that: the grinding device comprises a classifying grinder (2), and the outlet of the first conveying pipe (12) is connected to the classifying grinder (2) Imports. 4. The flue gas purification and deacidification treatment system according to claim 3, characterized in that: the pipeline connected to the outlet of the classifying grinder (2) is connected to the inlet of the second storage bin (3). 5. The flue gas purification and deacidification treatment system according to claim 1, characterized in that: the second arch breaker (31) comprises a conical outer cylinder, a stirring rod and a lower outlet, and the lower outlet The ports are connected above the inlets of several of said conveyors (33). 6. The flue gas purification and deacidification treatment system according to claim 1, characterized in that: the injector (32) comprises a first inlet (321), a second inlet (322) and an outlet pipe (323), the The outlet of the conveyor (33) is connected to the first inlet (321). 7. The flue gas purification and deacidification treatment system according to claim 6, characterized in that: the second inlet (322) is connected to the output end of the first fan (35). 8. The flue gas purification and deacidification treatment system according to claim 6, characterized in that: the outlet pipe (323) is connected to the fourth inlet (43) of the reaction tank (4). 9. The flue gas purification and deacidification treatment system according to claim 8, characterized in that: the reaction tank (4) also includes a third inlet (41) and a gas outlet (42), and the third inlet (41 ) to connect the flue gas pipe. 10. The flue gas purification and deacidification treatment system according to claim 2, characterized in that: a pulse dust collector is connected above the first storage bin (1) and the second storage bin (3), The pulse dust collector above the second storage bin (3) is connected with a second blower fan (36).

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