Anti-hardening limestone flour bin and operation method

Abstract

The invention discloses an anti-hardening limestone powder bin and an operation method, the anti-hardening limestone powder bin comprises a thermal insulation material bin, an outer air cap is arranged in the thermal insulation material bin, an inner air cap is arranged in the outer air cap, one end is arranged on the thermal insulation material bin, and a first fan and a second fan are arranged at the other end; the adjusting valve is arranged at the end, close to the heat preservation stock bin, of the fluid channel, hardened materials inside are removed through an internal air pipe, it can be ensured that limestone powder freely flows in the powder bin by treating the hardened materials, production interruption caused by material blockage is avoided, and therefore the production efficiency is improved, and the production cost is reduced. The service life of the equipment is prolonged; the limestone powder is prevented from going bad due to damp; the quality of a desulfurizing agent is ensured; the working environment is improved;

Description

TECHNICAL FIELD

[0001] The present application relates to the field of desulfurization limestone storage, and particularly to a limestone powder bin capable of preventing material from being caked and an operating method thereof. BACKGROUND

[0002] Desulfurization limestone is a core raw material for industrial flue gas desulfurization, and its quality and application directly affect the desulfurization efficiency, operating cost and byproduct quality. The material in the limestone powder bin is often caked, and the caked limestone powder is prone to causing abrasion or blockage of equipment during the conveying process. The existing fluidization air pipe is installed around the wall of the powder bin, and thus cannot achieve the effect of overall fluidization of the material in the powder bin, which is prone to cause the material to be caked. The caked material block may block the pipeline and jam the feeder, so that the desulfurization environmental protection equipment cannot be normally put into operation, and in severe cases, the boiler environmental protection index emission is affected. The maintenance work is difficult, high-risk and time-consuming, and also increases the risk of occupational diseases of workers. SUMMARY

[0003] Therefore, the technical problem to be solved by the present application is that the material in the powder bin is prone to being caked.

[0004] The above technical problem is solved by the following technical scheme: the present application provides a limestone powder bin capable of preventing material from being caked, which comprises,

[0005] A heat preservation bin is provided with an outer air cap and an inner air cap in the outer air cap;

[0006] A fluid channel is provided with a first air fan and a second air fan at one end of the heat preservation bin;

[0007] A filter assembly is provided on the fluid channel;

[0008] An adjusting valve is provided at one end of the fluid channel close to the heat preservation bin.

[0009] In a preferred embodiment of the limestone powder bin capable of preventing material from being caked: the structure of the outer air cap is the same as that of the inner air cap, an inner sliding groove is formed in the outer air cap, and a sliding seat is arranged in the inner sliding groove.

[0010] In a preferred embodiment of the limestone powder bin capable of preventing material from being caked: an air inlet pipeline is arranged on the outer side of the outer air cap, and one end of the air inlet pipeline is in communication with the fluid channel.

[0011] In a preferred embodiment of the limestone powder bin capable of preventing material from being caked: a front valve is arranged at one end of the fluid channel close to the first air fan, and the other end of the front valve is arranged on the filter assembly.

[0012] In a preferred embodiment of the anti-caking limestone powder bin, the filtering assembly is provided with a rear valve at one end away from the front valve, and the other end of the rear valve is in communication with the adjusting valve.

[0013] In a preferred embodiment of the anti-caking limestone powder bin, the adjusting valve is provided with two valves of the same structure in the fluid channel, and the installation positions of the adjusting valves correspond to the positions of the outer air cap and the inner air cap.

[0014] In a preferred embodiment of the anti-caking limestone powder bin, the fluid channel is provided with a branch pipeline in parallel, and the branch pipeline is provided with a branch valve.

[0015] An operation method comprises,

[0016] An insulating board is built outside the powder bin to form an insulating material bin.

[0017] A fluid channel is formed by a metal ring pipe, one end of the fluid channel is installed at the center of the bottom of the powder bin, and the other end is connected with a fluidizing air source.

[0018] A hole is opened at two-thirds of the center of the top of the powder bin, the distance is re-measured, the zero position is set according to the height limit of the bottom of the conical powder bin, and a material level measuring device is installed.

[0019] In a preferred embodiment of the operation method, the fluidizing air source is composed of a first air blower and a second air blower, and the operation mode is one running and one standby.

[0020] In a preferred embodiment of the operation method, the bottom of the insulating material bin is provided with a conveying air source, and the model of the air blower is consistent with the model of the fluidizing air source.

[0021] The beneficial effects of the present application are that the internal material caking is removed by the internal air pipe, the caking is treated to ensure that the limestone powder can flow freely in the powder bin, the production interruption caused by material blockage is avoided, the production efficiency is improved, the caking causes the blockage and wear of the feeding machine and other equipment, the service life of the equipment is prolonged, the limestone powder is prevented from deteriorating due to moisture, the quality of the desulfurizing agent is ensured, the high-quality desulfurizing agent can more effectively react with the sulfur oxides in the flue gas, the desulfurization efficiency is improved, the pollutant emission is reduced, the dust flying is reduced, the working environment is improved, and the risk of occupational diseases of employees is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below only relate to some embodiments of the present application, but not limit the present application. Among them:

[0023] Figure 1 shows the overall structure of the present application.

[0024] Figure 2 shows the overall structure of the outer hood of the present application. DETAILED DESCRIPTION

[0025] In order for those skilled in the art to better understand the present application, the present application will be further described in detail below in conjunction with specific embodiments and drawings.

[0026] The terms used in the present application are those general terms currently widely used in the art in consideration of the functions related to the present application, but these terms can be changed according to the intention of those skilled in the art, precedents, or new technology in the art. In addition, specific terms can be selected by the applicant, and in this case, the detailed meaning thereof will be described in the detailed description of the present application. Therefore, the terms used in the specification should not be understood as simple names, but based on the meaning of the terms and the overall description of the present application.

[0027] REFERENCE Figure 1 , the embodiment provides a limestone powder bin capable of preventing hardening, comprising a heat preservation bin 1, an outer hood 11 arranged in the heat preservation bin 1, an inner hood 12 arranged in the outer hood 11, a fluid channel 2, one end of which is arranged on the heat preservation bin 1, the other end of which is provided with a first fan 3 and a second fan 4, a filtering assembly 6 arranged on the fluid channel 2, an adjusting valve 9 arranged on one end of the fluid channel 2 close to the heat preservation bin 1, a front valve 5 arranged on one end of the fluid channel 2 close to the first fan 3, the other end of the front valve 5 being arranged on the filtering assembly 6, a rear valve 8 arranged on one end of the filtering assembly 6 away from the front valve 5, the other end of the rear valve 8 being in communication with the adjusting valve 9, the adjusting valve 9 being arranged in two on the fluid channel 2, the installation positions of the adjusting valves 9 corresponding to the positions of the outer hood 11 and the inner hood 12, the fluid channel 2 being provided with a branch pipeline in parallel, the branch pipeline being provided with a branch valve 7, the high and low temperature difference in the heat preservation bin 1 being eliminated, the problem of hardening of materials in the powder bin caused by a large amount of condensation of moisture being solved, through the design of the first fan 3 and the second fan 4, when working, the two fans can still make the device work normally when the fan fails, and can also better adjust the size of the internal wind power to better process the internal hardening, wherein the model of the adjusting valve 9 can be selected as DN65, the models of the front valve 5, the rear valve 8 and the branch valve 7 can be selected as DN100, and the models of the first fan 3 and the second fan 4 can be selected as Roots fan BC5006, which are not limited here.

[0028] REFERENCE Figure 2The embodiment provides a limestone powder bin capable of preventing caking, the structure of an outer wind cap 11 is the same as that of an inner wind cap 12, an inner sliding groove 111 is formed in the outer wind cap 11, a sliding seat 112 is arranged in the inner sliding groove 111, an air inlet pipeline 114 is arranged on the outer side of the outer wind cap 11, one end of the air inlet pipeline 114 and the fluid channel 2 are in communication with each other, the structure of the outer wind cap 11 is the same as that of the inner wind cap 12, an inner sliding groove 111 is formed in the outer wind cap 11, a sliding seat 112 is arranged in the inner sliding groove 111, a positioning groove is formed in the sliding seat 112, an air inlet is arranged at one end of the sliding seat 112 close to the positioning groove, a deflection groove is formed at one end of the sliding seat 112 away from the positioning groove, the shape of the sliding seat 112 is a concentric circle structure with the outer wind cap 11 and the inner wind cap 12, the sizes are matched with each other, the position of the air inlet corresponds to the position of an air outlet nozzle 113 on the sliding seat 112, and the interference fit sealing ring can also reduce the overflow of gas.

[0029] Reference Figure 1 And Figure 2 The heat preservation board is built outside the powder bin to form a heat preservation bin 1, the fluid channel 2 is arranged through the metal ring pipe, one end of the fluid channel 2 is installed at the center of the bottom of the powder bin, the other end is connected with the fluidization air source, a hole is formed at the center of the top of the powder bin at two-thirds of the distance, the distance is re-measured, the zero position is determined according to the height limit of the bottom of the conical powder bin, the material level measuring device is installed, the fluidization air source is composed of a first fan 3 and a second fan 4, the operation mode is one running and one standby, the bottom of the heat preservation bin 1 is provided with a conveying air source, the fan model is consistent with that of the fluidization air source, the heat preservation bin 1, the outer wind cap 11 is arranged in the heat preservation bin 1, the inner wind cap 12 is arranged in the outer wind cap 11, the fluid channel 2, one end is arranged on the heat preservation bin 1, the other end is provided with the first fan 3 and the second fan 4, the filter assembly 6 is arranged on the fluid channel 2, the adjusting valve 9 is arranged at one end of the fluid channel 2 close to the heat preservation bin 1, the air outlet nozzle 113 is connected with the deflection groove through the rotating shaft, the air outlet nozzle 113 is provided with the telescopic pipe and the telescopic pad, the outer side of the outer wind cap 11 is provided with the air inlet pipeline 114, one end of the air inlet pipeline 114 and the fluid channel 2 are in communication with each other, the air outlet nozzle 113 designed through the inclined structure can drive the sliding seat 112 to rotate when the internal ventilation is sufficient, the blowing area inside is increased, meanwhile, the air outlet nozzle 113 is provided with the check valve, which can reduce the dust blown inside from entering the air outlet nozzle 113.

[0030] When in use, the insulation silo 1 is built into an insulation board room as a whole, the carbon steel pipe is used to make the ring pipe, the vulcanization hood is evenly installed on the ring pipe, and the metal ring pipe is installed to the bottom center of the desulfurized limestone powder silo. Two fans are used as air sources, and the operation mode is one operation and one standby. A regulating valve is installed in front of the fluidizing ring pipe to control the fluidizing air volume to ensure that the fluidizing effect is optimal. When the first fan 3 and the second fan 4 are working, the branch valve 7 is closed, and the gas enters the outlet pipe 116 through the fluid channel 2, enters the outlet nozzle 113 through the air inlet interconnected therewith, and passes through the outlet nozzle 113 blows air to the internal material. When the air outlet nozzle 113 blows air to the compacted part of the internal material, the air outlet nozzle 113 will swing due to the wind force adjustment, and blows air to the internal material at different angles to reduce the compaction of the internal material. The fan is used as the conveying air source and is installed on the first layer of the powder silo. It is connected to the conveying air main pipe, and a hole is opened at two-thirds of the center distance of the powder silo top. The distance is re-measured and the zero position is set according to the high limit of the bottom of the conical powder silo. A material level measuring device is installed that is explosion-proof and corrosion-resistant, prevents interference from fluidized wind and dielectric constant, prevents slope, and can be used in complex and harsh environments.

[0031] Finally, it should be pointed out that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways without departing from the scope of the present invention.

Claims

1. A limestone powder silo that prevents compaction, characterized by: include, A heat-insulating silo (1), wherein an outer hood (11) is provided in the heat-insulating silo (1), and an inner hood (12) is provided in the outer hood (11); A fluid channel (2), one end of which is provided on the heat-insulating silo (1), and the other end of which is provided with a first fan (3) and a second fan (4); A filter assembly (6) is disposed on the fluid channel (2); The regulating valve (9) is arranged at one end of the fluid channel (2) close to the heat-insulating silo (1).

2. The anti-caking limestone powder silo according to claim 1, characterized in that: The structure of the outer hood (11) is the same as that of the inner hood (12). An inner slide groove (111) is provided on the outer hood (11), and a sliding seat (112) is provided in the inner slide groove (111).

3. The anti-caking limestone powder silo according to claim 1, characterized in that: An air inlet pipe (114) is provided on the outside of the outer hood (11), and one end of the air inlet pipe (114) is in communication with the fluid channel (2).

4. The anti-caking limestone powder silo according to claim 1, characterized in that: A front valve (5) is provided at one end of the fluid channel (2) close to the first fan (3), and the other end of the front valve (5) is provided on the filter assembly (6).

5. The anti-caking limestone powder silo according to claim 4, characterized in that: A rear valve (8) is provided at one end of the filter assembly (6) away from the front valve (5), and the other end of the rear valve (8) is communicated with the regulating valve (9).

6. The anti-caking limestone powder silo according to claim 5, characterized in that: Two regulating valves (9) with the same structure are provided in the fluid channel (2), and the installation positions of the regulating valves (9) correspond to the positions of the outer hood (11) and the inner hood (12).

7. The anti-caking limestone powder silo according to claim 1, characterized in that: A branch pipeline is connected in parallel to the fluid channel (2), and a branch valve (7) is provided on the branch pipeline.

8. An operating method for the anti-caking limestone powder silo according to any one of claims 1 to 7, characterized in that: include, Building an insulation board outside the powder silo to construct an insulation silo (1); A fluid channel (2) is provided through a metal ring tube, one end of the fluid channel (2) is installed at the center of the bottom of the powder bin, and the other end is connected to a fluidizing air source; Drill a hole at two-thirds of the center distance from the powder silo top, re-measure the distance, set the zero position according to the high limit of the bottom of the conical powder silo, and install the material level measuring device.

9. The operating method according to claim 8, characterized in that: The fluidized air source is composed of a first fan (3) and a second fan (4), and the operation mode is one in operation and one in standby.

10. The operating method according to claim 9, characterized in that: A conveying air source is provided at the bottom of the heat-insulating silo (1), and the fan model is the same as the fluidizing air source fan model.

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