CN105091009B - Desulfurated plaster rain separated collection system and the spinner formula chimney comprising the system - Google Patents

Abstract

The invention relates to a desulfurization gypsum rain separation and collection system and a rotating surfing chimney comprising the system. Specifically, the system includes a chimney system, a gypsum rain separation system and a gypsum rain collection system. The chimney system includes a chimney inner cylinder, a chimney outer cylinder, and a horizontal flue; the gypsum rain separation system includes The first guide device in the inner cylinder and/or the second guide device arranged in the horizontal flue; the gypsum rain collection system includes a stagnation zone flow channel, an outlet pipe, and a gypsum rain recovery pipe; and the The stagnation zone flow channel is arranged on the inner wall of the inner cylinder of the chimney. By using the desulfurization gypsum rain separation and collection system of the present invention, higher income can be obtained at a lower cost, and it is applicable to the design of new power plants and the transformation of old power plants, and can effectively solve the phenomenon of desulfurization gypsum rain formed by chimney discharge.

Description

Desulfurization gypsum rain separation collection system and rotating surfing chimney containing the system

technical field

The invention relates to the field of thermal power plants, in particular to a chimney desulfurization gypsum rain separation system.

Background technique

At present, during the operation of thermal power plants, since the liquid particles in the flue gas cannot be effectively lifted and diffused into the atmosphere, it is easy to form "desulphurized gypsum rain" or acid rain in the power plant and its surroundings, polluting the power plant and its surrounding environment.

In the prior art, the methods for preventing and controlling desulfurization gypsum rain mainly include the following: 1) using a gas-gas heat exchanger (gasgasheater, GGH) device, using the flue gas in front of the desulfurization tower to heat the flue gas behind the desulfurization tower, and the heated net The temperature of the flue gas is high, and the flue gas can be effectively lifted after being discharged from the chimney, thereby preventing the occurrence of desulfurization gypsum rain. However, there are many shortcomings in the use of GGH devices, such as energy waste, easy blockage, large investment, low return rate, etc. Among them, easy blockage will seriously affect the safe and stable operation of the GGH system and power plants. 2) The tube-type GGH device is adopted, which works on the same principle as the ordinary GGH, the difference is that the original gas-gas direct heat exchange is changed to the gas-water-gas method. This method requires a large investment, and the resulting corrosion problem is difficult to solve. 3) The "wet chimney" scheme is adopted, that is, the GGH device is canceled, and the limestone-gypsum wet desulfurization process is adopted to directly discharge the clean flue gas from the chimney, and the chimney is lined with anti-corrosion materials. Since this solution does not use the GGH device, although it can effectively avoid the blockage of the GGH and is conducive to the safe and stable operation of the power plant, but because the exhaust gas temperature of the "wet chimney" is relatively low, the clean flue gas with saturated water at the outlet of the absorption tower will During the process, part of the condensation forms liquid droplets, and the flue gas cannot be effectively lifted and diffused into the atmosphere after being discharged from the chimney mouth, so the phenomenon of desulfurization gypsum rain cannot be effectively solved. 4) Adopt the technology of integrating smoke towers, which has limitations in national environmental protection policies. 5) Optimizing the desulfurization system, but this method has limited effects and cannot fundamentally solve the phenomenon of desulfurization gypsum rain. 6) Reduce the flue gas flow rate in the chimney. This method has a large initial investment and has no reference significance for old power plants. There is no effective matching method for collecting gypsum rain droplets, and it cannot effectively solve the desulfurization gypsum rain phenomenon.

In summary, the existing methods for solving the desulfurization gypsum rain phenomenon in this field all have a series of shortcomings such as high technical investment, low relative yield, and difficulty in popularization. In order to effectively solve this problem, it is urgent to develop a method that can A new method that can effectively solve the phenomenon of desulfurization gypsum rain formed by chimney emissions, which can obtain higher income at a lower construction cost, and is applicable to both new power plant design and old power plant transformation.

Contents of the invention

The purpose of the present invention is to provide a desulfurization gypsum rain separation and collection system, which can obtain higher income at a lower cost by using the system, and the system basically has no operating costs, which is convenient for saving energy consumption and is conducive to the economical and stable operation of the power plant. It is very suitable for promotion and application of old and new power plants.

The first aspect of the present invention provides a desulfurization gypsum rain separation and collection system, the system includes a chimney system, a gypsum rain separation system and a gypsum rain collection system, wherein,

The chimney system includes a chimney inner cylinder, a chimney outer cylinder and a horizontal flue communicated with the chimney inner cylinder;

The gypsum rain separation system includes a first flow guiding device arranged in the chimney inner cylinder and/or a second flow guiding device arranged in the horizontal flue;

The gypsum rain collection system includes a stagnation zone flow channel for stagnating and collecting gypsum rain, an outlet pipe for guiding the collected gypsum rain to the outside of the chimney inner tube, and a gypsum rain pipe connected to the outlet pipe. recovery pipes;

And the stagnation zone flow channel is set on the inner wall of the chimney inner tube.

In another preferred example, the gypsum rain separation system further includes an adjustment structure and/or a control structure of the first flow guiding device and/or the second flow guiding device.

In another preferred example, the horizontal flue traverses the outer tube of the chimney.

In another preferred example, the height of the first flow guiding device relative to the horizontal flue is 1-50m.

In another preferred example, the height of the first deflector relative to the horizontal flue is 3-45m, preferably 5-40m, more preferably 8-35m.

In another preferred example, the first guide device is composed of 1-10 guide vane groups; and/or

The guide vane group is composed of 1-6 guide vanes.

In another preferred example, the number of guide vane sets in the first guide device is 1-8, preferably 2-6, more preferably 3-5.

In another preferred example, the guide vane set consists of 2-5 guide vanes evenly distributed along the circumference, preferably 3-4 guide vanes.

In another preferred example, the included angle between each guide vane in the first guide device and the horizontal plane is about 1-90°.

In another preferred example, the included angle between each guide vane in the first guide device and the horizontal plane is about 15-80°, preferably 30-70°.

In another preferred example, the vane length of each guide vane in the first guide device is 0.1-0.8 times, preferably 0.2-0.7 times, more preferably 0.3-0.6 times the inner radius of the inner tube of the chimney. times.

In another preferred example, as the unit load changes, the adjustment structure and/or the control structure can be used to adjust the included angle between each guide vane in the first guide device and the horizontal plane.

In another preferred example, the guide vanes are fan blade-shaped, fan-shaped, or grille-shaped.

In another preferred example, the second flow guiding device is located at the outer wall of the horizontal flue near the inner cylinder of the chimney, and is used to make the flue gas in the horizontal flue enter the inner cylinder of the chimney horizontally and tangentially, so that the flue gas in the chimney Circulation is formed in the barrel.

In another preferred example, the second deflector is composed of 2-20 deflectors, preferably 3-15, more preferably 4-10.

In another preferred example, the deflectors in the second deflector are arranged in parallel.

In another preferred example, the deflectors in the second deflector device may be arranged equidistantly or not equidistantly.

In another preferred example, the included angle between the second guide device and the flow direction of the flue gas in the horizontal flue is 1-80°, preferably 5-60°, more preferably 10-45°.

In another preferred example, the heights of the deflectors in the second deflector are substantially the same as the heights of the horizontal flues at their respective locations.

In another preferred example, the width of each deflector in the second deflector device is 0.2-0.8 times, preferably 0.4-0.6 times, the width of the horizontal flue.

In another preferred example, the included angle between the second flow guide device and the flow direction of the flue gas in the horizontal flue can be adjusted through the adjustment structure and/or the control structure.

In another preferred example, the cross section of the flow channel in the stagnation zone is surf-shaped.

In another preferred example, the flow channel in the stagnation zone is arranged in a helical, rotating and ascending manner.

In another preferred example, the flow channel in the stagnation zone is arranged in sections.

In another preferred example, each stagnation zone flow channel includes a first component line L1, a first component ellipse A, a second component ellipse B, a second component ellipse C, and a third component L2.

In another preferred example, the included angle between the straight line L1 of the first assembly and the horizontal plane is 10-80°, preferably 30-75°, more preferably 40-70°.

In another preferred example, the semi-major axis a _A of the ellipse A in the first assembly is 0.02-0.9 times, preferably 0.05-0.85 times, more preferably 0.2-0.7 times the inner radius of the chimney inner cylinder .

In another preferred example, the number of channels in the stagnation zone is 1-15, preferably 2-10, more preferably 3-8.

In another preferred example, the bottommost ends of the flow channels in the stagnation zones are connected to the outlet pipes.

In another preferred example, the angle formed between the highest end and the bottom end of each stagnation zone flow channel is 365-1080°, preferably 365-850°, more preferably 365° -500°.

In another preferred example, the outlet pipe passes through the inner wall of the chimney and communicates with the gypsum rain recovery pipe provided on the outer wall of the inner wall of the chimney.

In another preferred example, 1-5 lead-out pipes, preferably 1-3, are provided for each flow channel in the stagnation zone.

In another preferred example, the number of the outlet pipes may be the same as or different from the number of the flow channels in the stagnation zone.

In another preferred example, the number of the outlet pipes is 1-20, preferably 2-18, more preferably 3-16.

In another preferred example, the gypsum rain collection system further includes a sump for collecting gypsum rain flowing out of the gypsum rain recovery pipe.

In another preferred example, the water accumulation pit is connected to the desulfurization island, and the gypsum rain collected by the water accumulation pit is finally recycled to the desulfurization island.

The second aspect of the present invention provides a rotating surfing chimney, the chimney includes the desulfurization gypsum rain separation and collection system described in the first aspect of the present invention.

The third aspect of the present invention provides an application of the desulfurization gypsum rain separation and collection system described in the first aspect of the present invention, for separating and collecting desulfurization gypsum rain.

The fourth aspect of the present invention provides a method for separating and collecting desulfurized gypsum rain. The method uses the desulfurized gypsum rain separation and collection system described in the first aspect of the present invention to separate and collect desulfurized gypsum rain.

It should be understood that within the scope of the present invention, the above-mentioned technical features of the present invention and the technical features specifically described in the following (such as embodiments) can be combined with each other to form new or preferred technical solutions. Due to space limitations, we will not repeat them here.

Description of drawings

Fig. 1 is a schematic structural view of the present invention using guide vanes as a guide device.

Fig. 2 is a structural schematic diagram of using a deflector as a deflector in the present invention.

Fig. 3 is a schematic structural view of the flow channel in the stagnation zone of the present invention.

detailed description

After long-term and in-depth research, the inventor unexpectedly found that by arranging the first flow guide device in the inner cylinder of the chimney and/or the second flow guide device in the horizontal flue, and setting the inner cylinder wall of the chimney Correspondingly setting stagnant zone flow channels with specific shapes and fluid characteristics can achieve the purpose of effectively separating and collecting gypsum rain, so as to obtain a relatively low cost to obtain high income, basically no operating costs, It is a desulfurization gypsum rain separation collection system that is convenient for energy saving, economical and stable operation of the power plant, and is very suitable for the promotion and application of new and old power plants. Based on the above findings, the inventors have accomplished the present invention.

the term

As used herein, the terms "desulphurized gypsum rain separation and collection system of the present invention", "desulphurization gypsum rain separation and collection system" or "the system" are used interchangeably, and all refer to a system including a chimney system, a gypsum rain separation system and a gypsum rain collection system , wherein, the chimney system includes a chimney inner cylinder, a chimney outer cylinder, and a horizontal flue communicated with the chimney inner cylinder; the gypsum rain separation system includes a first flow guiding device arranged in the chimney inner cylinder and /or the second guide device arranged in the horizontal flue; the gypsum rain collection system includes a stagnation area flow channel for stagnant and collecting gypsum rain, for guiding the collected gypsum rain into the chimney The outlet pipe outside the cylinder, and the gypsum rain recovery pipe connected with the outlet pipe; and the stagnation zone flow channel is arranged on the inner wall of the chimney inner cylinder.

As used herein, the term "horizontal flue" refers to a flue that is substantially perpendicular to the chimney inner barrel for flue gas flow into the chimney inner barrel, and the flue may be inclined at 1-15° from the horizontal plane.

Desulfurization gypsum rain separation collection system

The present invention provides a desulfurization gypsum rain separation and collection system, the system includes a chimney system, a gypsum rain separation system and a gypsum rain collection system, wherein,

The chimney system includes a chimney inner cylinder, a chimney outer cylinder and a horizontal flue communicated with the chimney inner cylinder;

The gypsum rain separation system includes a first flow guiding device arranged in the chimney inner cylinder and/or a second flow guiding device arranged in the horizontal flue;

The gypsum rain collection system includes a stagnation zone flow channel for stagnating and collecting gypsum rain, an outlet pipe for guiding the collected gypsum rain to the outside of the chimney inner tube, and a gypsum rain pipe connected to the outlet pipe. recovery pipes;

And the stagnation zone flow channel is set on the inner wall of the chimney inner cylinder.

In another preferred example, the gypsum rain separation system further includes an adjustment structure and/or a control structure of the first flow guiding device and/or the second flow guiding device.

In another preferred example, the horizontal flue traverses the outer cylinder of the chimney.

In the present invention, the height of the first flow guiding device relative to the horizontal flue is not particularly limited.

Typically, the height of the first flow guiding device relative to the horizontal flue is 1-50m.

In another preferred example, the height of the first deflector relative to the horizontal flue is 3-45m, preferably 5-40m, more preferably 8-35m.

In the present invention, the first guide device is composed of 1-10 guide vane groups; and/or

The guide vane group is composed of 1-6 guide vanes.

In another preferred example, the number of guide vane sets in the first guide device is 1-8, preferably 2-6, more preferably 3-5.

In another preferred example, the guide vane set consists of 2-5 guide vanes evenly distributed along the circumference, preferably 3-4 guide vanes.

In the present invention, the included angle between each guide vane and the horizontal plane in the first guide device is not particularly limited.

Typically, the included angle between each guide vane in the first guide device and the horizontal plane is about 1-90°.

In another preferred example, the included angle between each guide vane in the first guide device and the horizontal plane is about 15-80°, preferably 30-70°.

In another preferred example, the vane length of each guide vane in the first guide device is 0.1-0.8 times, preferably 0.2-0.7 times, more preferably 0.3-0.6 times the inner radius of the inner tube of the chimney. times.

In another preferred example, as the unit load changes, the adjustment structure and/or the control structure can be used to adjust the included angle between each guide vane in the first guide device and the horizontal plane.

In another preferred example, the guide blades include (but are not limited to) fan blades, fans, and grids.

In the present invention, the second guide device is located at the outer wall of the horizontal flue near the inner cylinder of the chimney, and is used to make the flue gas in the horizontal flue enter the inner cylinder of the chimney horizontally and tangentially, so that the flue gas in the inner cylinder of the chimney Form a circulation.

In another preferred example, the second deflector is composed of 2-20 deflectors, preferably 3-15, more preferably 4-10.

In another preferred example, the deflectors in the second deflector are arranged in parallel.

In another preferred example, the deflectors in the second deflector device may be arranged equidistantly or not equidistantly.

In another preferred example, the included angle between the second guide device and the flow direction of the flue gas in the horizontal flue is 1-80°, preferably 5-60°, more preferably 10-45°.

In another preferred example, the heights of the deflectors in the second deflector are substantially the same as the heights of the horizontal flues at their respective positions.

In another preferred example, the width of each deflector in the second deflector device is 0.2-0.8 times, preferably 0.4-0.6 times, the width of the horizontal flue.

In another preferred example, the included angle between the second flow guide device and the flow direction of the flue gas in the horizontal flue can be adjusted through the adjustment structure and/or the control structure.

In the present invention, the cross section of the channel in the stagnation zone is a surfing type.

In another preferred example, the flow channel in the stagnation zone is arranged in a helical, rotating and ascending manner.

In another preferred example, the flow channel in the stagnation zone is arranged in sections.

In another preferred example, each stagnation zone flow channel includes a first component line L1, a first component ellipse A, a second component ellipse B, a second component ellipse C, and a third component L2.

In another preferred example, the included angle between the straight line L1 of the first assembly and the horizontal plane is 10-80°, preferably 30-75°, more preferably 40-70°.

In another preferred example, the semi-major axis a _A of the ellipse A in the first assembly is 0.02-0.9 times, preferably 0.05-0.85 times, more preferably 0.2-0.7 times the inner radius of the chimney inner cylinder .

In another preferred example, the number of channels in the stagnation zone is 1-15, preferably 2-10, more preferably 3-8.

In another preferred example, the bottommost ends of the flow channels in the stagnation zones are connected to the outlet pipes.

In another preferred example, the angle formed between the highest end and the bottom end of each stagnation zone flow channel is 365-1080°, preferably 365-850°, more preferably 365° -500°.

In the present invention, the outlet pipe passes through the inner wall of the chimney and communicates with the gypsum rain recovery pipe provided on the outer wall of the inner wall of the chimney.

In another preferred example, 1-5 lead-out pipes, preferably 1-3, are provided for each flow channel in the stagnation zone.

In another preferred example, the number of the outlet pipes may be the same as or different from the number of the flow channels in the stagnation zone.

In another preferred example, the number of the outlet pipes is 1-20, preferably 2-18, more preferably 3-16.

In another preferred example, the gypsum rain collection system further includes a sump for collecting gypsum rain flowing out of the gypsum rain recovery pipe.

In another preferred example, the water accumulation pit is connected to the desulfurization island, and the gypsum rain collected by the water accumulation pit is finally recycled to the desulfurization island.

The system uses centrifugal force to separate gypsum rain under the action of the gypsum rain separation system, and adopts a gypsum rain collection system to stagnate and collect the gypsum rain separated by the gypsum rain separation system and guide it to the same place as the gypsum rain The collection system is connected to the desulfurization island to realize the separation and collection of gypsum rain, which can effectively solve the environmental pollution problem caused by the phenomenon of desulfurization gypsum rain.

application

The present invention also provides a rotating surfing chimney, the chimney includes the desulfurization gypsum rain separation and collection system.

The present invention also provides an application of the desulfurization gypsum rain separation and collection system for separating and collecting desulfurization gypsum rain.

The present invention also provides a method for separating and collecting desulfurized gypsum rain, which uses the desulfurized gypsum rain separation and collection system to separate and collect desulfurized gypsum rain.

Compared with the prior art, the present invention has the following main advantages:

(1) High recovery efficiency of gypsum rain;

(2) Small investment, high return;

(3) Basically no operating costs;

(4) It is convenient to save energy consumption;

(5) Conducive to the economical and stable operation of the power plant;

(6) It is very suitable for the promotion and application of new and old power plants.

Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. For the experimental methods without specific conditions indicated in the following examples, usually follow the conventional conditions or the conditions suggested by the manufacturer. Percentages and parts are by weight unless otherwise indicated.

Unless otherwise defined, all professional and scientific terms used herein have the same meanings as commonly understood by those skilled in the art. In addition, any methods and materials similar or equivalent to those described can be applied to the method of the present invention. The preferred implementation methods and materials described herein are for demonstration purposes only.

Example 1 Using guide vanes as guide device + gypsum rain collection system

Fig. 1 is a schematic structural view of the present invention using guide vanes as a guide device. In order to realize the rotating upward flow of the flue gas, guide vanes can be installed at the bottom of the chimney. The flue gas flows through the guide vanes to generate a certain tangential horizontal velocity, and the flue gas begins to flow in a rotating upward manner, thus realizing the Inertial separation of particles.

In this embodiment, the number of the guide vane group is 1, and the number of guide vanes in the guide vane group is 4, and the guide vanes are arranged at a height of about 10 m relative to the horizontal flue, and each The blade length of the guide vanes is 0.5 times the inner radius of the chimney inner cylinder, and the included angle between each guide vane and the horizontal plane is about 50°.

Fig. 3 is a schematic structural view of the flow channel in the stagnation zone of the present invention. The flow channel in the stagnation zone is arranged in the manner of segmented spiral rotation and upward movement. After the liquid droplets separated by inertia are collected by the flow channel, they flow to the end of the flow channel in the stagnation zone under the action of gravity, and the flow in the stagnation zone A lead-out pipe is set at the end of the tunnel, and the lead-out pipe leads the gypsum rain out of the inner tube of the chimney, is collected by the gypsum rain recovery pipe on the outer wall of the inner tube of the chimney, and is finally led to the sump.

In this embodiment, the number of flow passages in the stagnation area is five, and the semi-major axis a _A of the ellipse A in the first assembly is about 0.65 times the inner radius of the inner cylinder of the chimney. The angle formed by the highest end of the zone flow channel and the lowest end is about 380°.

result

Using the guide vane as a guide device combined with the flow channel in the stagnant area as a gypsum rain collection system can achieve a collection rate of gypsum rain ≥ 75%. When used in conjunction with other devices, the system can achieve higher gypsum rain collection efficiency.

Before and after adopting said system, detect the content of gypsum rain (such as calcium sulfate) in flue gas of chimney inner tube outlet respectively, know that adopt said system can reduce the content of gypsum rain in chimney inner tube outlet flue gas Reduced by at least 90%. In addition, further testing shows that the system described in this embodiment has basically no effect on the flow rate of the flue gas in the inner tube of the chimney.

Example 2 Using deflectors as deflectors + gypsum rain collection system

Fig. 2 is a structural schematic diagram of using a deflector as a deflector in the present invention. The flue gas flows to the entrance of the chimney and changes direction through the deflector. After the flue gas enters the inner tube of the chimney, the flue gas rotates and flows upward at a certain speed and angle. During the flow of the flue gas, the inertial separation of liquid particles is realized. .

In this embodiment, the number of the deflectors is 2, the height of the deflectors is the same as the height of the horizontal flue, and the width of the deflectors is 0.5 times the width of the horizontal flue, so The included angle between the deflector plate and the flow direction of the flue gas in the horizontal flue is 15°.

Fig. 3 is a schematic structural view of the flow channel in the stagnation zone of the present invention. The flow channel in the stagnation zone is arranged in the manner of segmented spiral rotation and upward movement. After the liquid droplets separated by inertia are collected by the flow channel, they flow to the end of the flow channel in the stagnation zone under the action of gravity, and the flow in the stagnation zone A lead-out pipe is set at the end of the tunnel, and the lead-out pipe leads the gypsum rain out of the inner tube of the chimney, is collected by the gypsum rain recovery pipe on the outer wall of the inner tube of the chimney, and is finally led to the sump.

In this embodiment, the number of flow passages in the stagnation area is five, and the semi-major axis a _A of the ellipse A in the first assembly is about 0.65 times the inner radius of the inner cylinder of the chimney. The angle formed by the highest end of the zone flow channel and the lowest end is about 380°.

result

Using the guide plate as a guide device combined with the flow channel in the stagnant area as a gypsum rain collection system can achieve a collection rate of gypsum rain ≥ 80%. When used in conjunction with other devices, the system can achieve higher gypsum rain collection efficiency.

Before and after adopting said system, detect the content of gypsum rain (such as calcium sulfate) in flue gas of chimney inner tube outlet respectively, know that adopt said system can reduce the content of gypsum rain in chimney inner tube outlet flue gas Reduced by at least 95%. In addition, further testing shows that the system described in this embodiment has basically no effect on the flow rate of the flue gas in the inner tube of the chimney.

Embodiment 3 The combination of guide vanes and guide plates is used as the guide device + gypsum rain collection system

The guide vanes, guide plates and stagnation zone flow channels described in Embodiment 3 are the same as those described in Embodiment 1 and Embodiment 2.

result

When the combination of the guide vane and the guide plate is used as the guide device and the flow channel in the stagnation area is used as the gypsum rain collection system, the collection rate of gypsum rain ≥ 90% can be realized.

Before and after adopting said system, detect the content of gypsum rain (such as calcium sulfate) in flue gas of chimney inner tube outlet respectively, know that adopt said system can reduce the content of gypsum rain in chimney inner tube outlet flue gas Reduced by at least 98%. In addition, further testing shows that the system described in this embodiment has basically no effect on the flow rate of the flue gas in the inner tube of the chimney.

Comparative example 1

Same as embodiment 3, the difference is: the stagnation zone flow channel is not a surfing type, it is shape.

When the flow channel in the stagnation zone is When it is shaped, the resulting system will seriously affect the flow velocity of the flue gas in the inner tube of the chimney, and the gypsum rain separated by inertia is not easy to discharge from the system, and it is impossible to achieve truly effective separation of gypsum rain. After calculation, the collection rate of gypsum rain in the obtained system is only 30%.

Comparative example 2

Same as embodiment 3, the difference is: the stagnation zone flow channel is not a surfing type, it is shape.

When the flow channel in the stagnation zone is When shaped, the resulting system will affect the flow velocity of the flue gas in the chimney inner tube to a certain extent, and the gypsum rain separated by inertia can hardly be discharged from the system. With the prolongation of the service time, the flow channel in the stagnation area is very easy to be blocked, so that the system cannot realize truly effective separation of gypsum rain. After calculation, the collection rate of gypsum rain by the obtained system is only 10%.

All documents mentioned in this application are incorporated by reference in this application as if each were individually incorporated by reference. In addition, it should be understood that after reading the above teaching content of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

Claims (14)

1. A desulfurization gypsum rain separation collection system is characterized in that said system comprises a chimney system, a gypsum rain separation system and a gypsum rain collection system, wherein, The chimney system includes a chimney inner cylinder, a chimney outer cylinder and a horizontal flue communicated with the chimney inner cylinder; The gypsum rain separation system includes a first flow guiding device arranged in the chimney inner tube and a second flow guiding device arranged in the horizontal flue; The gypsum rain collection system includes a stagnation zone flow channel for stagnating and collecting gypsum rain, an outlet pipe for guiding the collected gypsum rain to the outside of the chimney inner tube, and a gypsum rain pipe connected to the outlet pipe. recovery pipes; And the stagnation zone flow channel is set on the inner wall of the chimney inner tube; In addition, the cross section of the flow channel in the stagnation area is surf-shaped, and the flow channel in the stagnation area is arranged in a spiral upward manner, and the flow channel in the stagnation area is arranged in sections, and the flow channel in the stagnation area is arranged in sections. The number of flow channels in the zone is 1-15, and the included angle between the highest end and the bottom end of each stagnation zone flow channel is 365°-1080°. 2. The desulfurization gypsum rain separation and collection system according to claim 1, characterized in that the height of the first diversion device relative to the horizontal flue is 1-50m. 3. The desulfurized gypsum rain separation and collection system according to claim 1, wherein the first guide device is composed of 1-10 guide vane groups; and The guide vane group is composed of 1-6 guide vanes. 4. The desulfurization gypsum rain separation and collection system according to claim 3, characterized in that, the included angle between each guide vane in the first guide device and the horizontal plane is 1-90°. 5. The desulfurization gypsum rain separation and collection system according to claim 3, wherein the length of each guide vane in the first guide device is 0.1-0.8 times the inner radius of the chimney inner tube. 6. The desulfurization gypsum rain separation and collection system according to claim 1, wherein the second guide device is located at the outer wall of the horizontal flue near the inner tube of the chimney, and is used to horizontally cut the flue gas in the horizontal flue. into the chimney inner barrel to form a circulation in said chimney inner barrel. 7. The desulfurization gypsum rain separation and collection system according to claim 6, characterized in that, the second deflector is composed of 2-20 deflectors. 8. The desulfurized gypsum rain separation and collection system according to claim 7, wherein the deflectors in the second deflector are arranged in parallel. 9. The desulfurization gypsum rain separation and collection system according to claim 7, wherein the included angle between the second guide device and the flow direction of the flue gas in the horizontal flue is 1-80°. 10. The desulfurization gypsum rain separation and collection system according to claim 7, characterized in that the heights of the deflectors in the second deflector are substantially the same as the heights of the horizontal flues at their respective positions. 11. The desulfurization gypsum rain separation and collection system according to claim 1, characterized in that, the outlet pipe passes through the inner wall of the chimney and communicates with the gypsum rain recovery pipe arranged on the outer wall of the inner wall of the chimney. 12. A rotating surfing chimney, characterized in that the chimney comprises the desulfurization gypsum rain separation and collection system according to claim 1. 13. The application of the desulfurization gypsum rain separation and collection system according to claim 1, characterized in that it is used for separating and collecting desulfurization gypsum rain. 14. A method for separating and collecting desulfurized gypsum rain, characterized in that the method uses the desulfurized gypsum rain separation and collection system according to claim 1 to separate and collect desulfurized gypsum rain.