CN216726595U - Sodium bicarbonate desulfurizer preparation facilities - Google Patents
Sodium bicarbonate desulfurizer preparation facilities Download PDFInfo
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- CN216726595U CN216726595U CN202123012561.8U CN202123012561U CN216726595U CN 216726595 U CN216726595 U CN 216726595U CN 202123012561 U CN202123012561 U CN 202123012561U CN 216726595 U CN216726595 U CN 216726595U
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Abstract
The utility model relates to a sodium bicarbonate desulfurizer preparation device, which comprises a sodium bicarbonate desulfurizer storage unit, a sodium bicarbonate desulfurizer preparation unit and a heat exchange unit; the sodium bicarbonate desulfurizer storage unit is provided with a desulfurizer powder bin, and the sodium bicarbonate desulfurizer preparation unit consists of a mill, a conveying fan and a wind power conveying pipeline; the heat exchange unit consists of a high-temperature heat-conducting oil coil, a high-temperature oil circulating pump, a low-temperature heat-conducting oil coil, a low-temperature oil circulating pump and a high-level oil tank; the utility model discloses effectively integrated SOx/NOx control system's flue and desulfurizer preparation facilities among the sodium bicarbonate dry process desulfurization system, the heat energy of make full use of flue gas realizes the companion's heat to desulfurizer powder storehouse, makes sodium bicarbonate keep at 30 ~ 50 ℃ at the storage temperature that gets into before the mill grinds, has both avoided sodium bicarbonate deliquescence, has guaranteed again that sodium bicarbonate can not be heated and decomposed into sodium carbonate, device simple structure, high efficiency and energy saving.
Description
Technical Field
The utility model relates to a sodium bicarbonate dry desulfurization gas cleaning technical field especially relates to a sodium bicarbonate desulfurizer preparation facilities.
Background
The sodium bicarbonate dry desulfurization flue gas purification technology has the advantages of simple process, good economic benefit, no sewage discharge and the like, and has certain application in the field of flue gas pollution treatment.
In the flue gas purification process by sodium bicarbonate dry desulfurization, the desulfurization effect of sodium bicarbonate is greatly influenced by the particle size of sodium bicarbonate particles. If the sodium bicarbonate is deliquesced and hardened before entering the mill, the flowability of the sodium bicarbonate is reduced, and the sodium bicarbonate cannot continuously enter the mill, so that the desulfurization effect is influenced. For this reason, in wet areas, particularly coastal areas, heat tracing measures are required to be taken for the sodium bicarbonate dry desulphurization device, and the heat tracing usually requires additional heating equipment; in addition, the traditional dry desulfurization method also has the problem of large occupied area of a desulfurization device.
Therefore, how to avoid deliquescence and hardening in the process of sodium bicarbonate storage and preparation, how to integrate the flue and the sodium bicarbonate desulfurizer preparation device in the desulfurization and denitrification system, and reduce the floor area are the key points and difficulties of the sodium bicarbonate dry desulfurization flue gas purification technology.
Disclosure of Invention
The utility model provides a sodium bicarbonate desulfurizer preparation facilities has effectively integrated the flue of SOx/NOx control system and the desulfurizer preparation facilities in the sodium bicarbonate dry process desulfurization system, and the heat energy of make full use of flue gas realizes the companion's heat to desulfurizer powder storehouse, makes the storage temperature of sodium bicarbonate before getting into the mill and grinding keep at 30 ~ 50 ℃, has both avoided sodium bicarbonate deliquescence, has guaranteed again that sodium bicarbonate can not be heated and has decomposed into sodium carbonate, device simple structure, and is energy-efficient.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a sodium bicarbonate desulfurizer preparation device comprises a sodium bicarbonate desulfurizer storage unit, a sodium bicarbonate desulfurizer preparation unit and a heat exchange unit; the sodium bicarbonate desulfurizer storage unit is provided with a desulfurizer powder bin, the top of the desulfurizer powder bin is provided with a feed inlet, the bottom of the desulfurizer powder bin is provided with a discharge port, and the discharge port is provided with a discharge device; the sodium bicarbonate desulfurizer preparation unit consists of a mill, a conveying fan and a wind power conveying pipeline, wherein a material inlet of the mill is connected with a discharge hole of the discharging device, a material outlet of the mill is connected with one end of the wind power conveying pipeline through the conveying fan, and the other end of the wind power conveying pipeline is connected with a desulfurizer inlet arranged on a flue; the heat exchange unit consists of a high-temperature heat-conducting oil coil, a high-temperature oil circulating pump, a low-temperature heat-conducting oil coil, a low-temperature oil circulating pump and a high-level oil tank; the high-temperature heat-conducting oil coil pipe consists of a flue heat exchange section pipeline, a connecting section pipeline and a heat-conducting oil heat exchange section pipeline, wherein the flue heat exchange section pipeline is positioned in a flue, the heat-conducting oil heat exchange section pipeline is positioned in a high-level oil tank, and a high-temperature oil circulating pump is arranged on the connecting section pipeline between the flue heat exchange section pipeline and the heat-conducting oil heat exchange section pipeline; the high-level oil tank is internally injected with heat conduction oil, a heat conduction oil inlet and a heat conduction oil outlet are arranged, the low-temperature heat conduction oil coil pipe is composed of an outlet connecting section pipeline, a heat tracing section pipeline and an inlet connecting section pipeline, the heat tracing section pipeline is wound outside the desulfurizer powder bin, the heat conduction oil outlet of the high-level oil tank sequentially passes through the outlet connecting section pipeline, the heat tracing section pipeline and the inlet connecting section pipeline to be connected with the heat conduction oil inlet, and the inlet connecting section pipeline is provided with a low-temperature oil circulating pump.
The top of the desulfurizer powder bin is also provided with a pressure relief opening, the pressure relief opening is connected with one end of a pressure relief pipe through a pressure relief valve, and the other end of the pressure relief pipe is connected with a flue.
The desulfurizer powder bin is arranged close to the flue.
And an electric valve is arranged at the downstream of the low-temperature oil circulating pump on the outlet connecting section pipeline.
And a check valve is arranged on the inlet connecting section pipeline.
The top of the high-level oil tank is provided with a temperature control device, the temperature control device is composed of a temperature measuring device and a control system, and the temperature measuring device realizes interlocking control with the high-temperature oil circulating pump, the low-temperature oil circulating pump and the electric valve through the control system.
The heat tracing section pipeline is spirally arranged along the height direction of the desulfurizer powder bin, and a heat insulation layer is arranged on the outer side of the heat tracing section pipeline.
The flue heat exchange section pipeline is arranged in a flue in a two-way roundabout mode, and the arrangement plane is vertical to the flowing direction of flue gas; the heat transfer oil heat exchange section pipeline adopts double-path circuitous arrangement in the high-level oil tank.
A support operation platform is arranged on the outer side of the desulfurizer powder bin and is fixedly connected with the flue support; an electric hoist is arranged above the supporting operation platform corresponding to the desulfurizer powder bin.
Compared with the prior art, the beneficial effects of the utility model are that:
1) the sodium bicarbonate desulfurizer preparation device and the flue are effectively integrated and are arranged adjacently, and the support for supporting the operation platform and the flue is connected and fixed, so that the whole structure is compact, the operation is convenient, the materials and the occupied area are saved, and the equipment investment is reduced;
2) the heat tracing of the desulfurizer powder bin is realized by effectively utilizing the heat energy of the flue gas, no additional heating equipment is needed, the energy is saved, and the temperature drop of the flue gas is small;
3) two independent pipeline systems of a high-temperature heat-conducting oil coil and a low-temperature heat-conducting oil coil are adopted to realize heat exchange, and the temperature control device is used for controlling the heat tracing temperature of the desulfurizer powder bin to prevent sodium bicarbonate particles from generating decomposition reaction due to local overheating;
4) the sodium bicarbonate particles are kept in a dry state all the time through heat tracing, the fluidity of the sodium bicarbonate particles is kept, the sodium bicarbonate desulfurizer can be continuously and stably prepared when the desulfurization system operates, and the desulfurization effect is improved.
Drawings
FIG. 1 is a schematic structural diagram of a sodium bicarbonate desulfurizer preparation apparatus of the present invention.
In the figure: 1-1 part of a desulfurizer powder bin 1-2 parts of a discharging device 1-3 parts of a pressure relief pipe 2-1 part of a mill 2-2 parts of a conveying fan 2-3 parts of a wind conveying pipeline 3-1 part of a high-temperature heat conducting oil coil pipe 3-2 part of a high-temperature oil circulating pump 3-3 part of a low-temperature heat conducting oil coil pipe 3-4 part of a low-temperature oil circulating pump 3-5 part of a high-level oil tank 3-6 part of a temperature control device 3-7 part of an electric valve 3-8 part of a check valve 4-1 part of a flue 4-2 part of an electric hoist 4-3 part of a supporting operation platform
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:
as shown in fig. 1, the device for preparing sodium bicarbonate desulfurizer of the present invention comprises a sodium bicarbonate desulfurizer storage unit, a sodium bicarbonate desulfurizer preparation unit and a heat exchange unit; the sodium bicarbonate desulfurizer storage unit is provided with a desulfurizer powder bin 1-1, the top of the desulfurizer powder bin 1-1 is provided with a feed inlet, the bottom of the desulfurizer powder bin is provided with a discharge outlet, and the discharge outlet is provided with a discharge device 1-2; the sodium bicarbonate desulfurizer preparation unit consists of a mill 2-1, a conveying fan 2-2 and a wind power conveying pipeline 2-3, wherein a material inlet of the mill 2-1 is connected with a discharge hole of a discharge device 1-2, a material outlet of the mill 2-1 is connected with one end of the wind power conveying pipeline 2-3 through the conveying fan 2-2, and the other end of the wind power conveying pipeline 2-3 is connected with a desulfurizer inlet arranged on a flue 4-1; the heat exchange unit consists of a high-temperature heat conduction oil coil pipe 3-1, a high-temperature oil circulating pump 3-2, a low-temperature heat conduction oil coil pipe 3-3, a low-temperature oil circulating pump 3-4 and a high-level oil tank 3-5; the high-temperature heat-conducting oil coil pipe 3-1 consists of a flue heat exchange section pipeline, a connecting section pipeline and a heat-conducting oil heat exchange section pipeline, wherein the flue heat exchange section pipeline is positioned in a flue 4-1, the heat-conducting oil heat exchange section pipeline is positioned in a high-level oil tank 3-5, and a high-temperature oil circulating pump 3-2 is arranged on the connecting section pipeline between the flue heat exchange section pipeline and the heat-conducting oil heat exchange section pipeline; the high-level oil tank 3-5 is internally injected with heat conduction oil and is provided with a heat conduction oil inlet and a heat conduction oil outlet, the low-temperature heat conduction oil coil 3-3 consists of an outlet connecting section pipeline, a heat tracing section pipeline and an inlet connecting section pipeline, the heat tracing section pipeline is wound outside the desulfurizer powder bin 1-1, the heat conduction oil outlet of the high-level oil tank 3-5 is connected with the heat conduction oil inlet through the outlet connecting section pipeline, the heat tracing section pipeline and the inlet connecting section pipeline in sequence, and the inlet connecting section pipeline is provided with a low-temperature oil circulating pump 3-4.
The top of the desulfurizer powder bin 1-1 is also provided with a pressure relief opening, the pressure relief opening is connected with one end of a pressure relief pipe 1-3 through a pressure relief valve, and the other end of the pressure relief pipe 1-3 is connected with a flue 4-1.
The desulfurizer powder bin 1-1 is arranged close to the flue 4-1.
An electric valve 3-7 is arranged at the downstream of the low-temperature oil circulating pump 3-4 in the outlet connecting section pipeline.
And a check valve 3-8 is arranged on the inlet connecting section pipeline.
The top of the high-level oil tank 3-5 is provided with a temperature control device 3-6, the temperature control device 3-6 is composed of a temperature measuring device and a control system, and the temperature measuring device realizes interlocking control with the high-temperature oil circulating pump 3-2, the low-temperature oil circulating pump 3-4 and the electric valve 3-7 through the control system.
The heat tracing section pipeline is spirally arranged along the height direction of the desulfurizer powder bin 1-1, and a heat insulation layer is arranged on the outer side of the heat tracing section pipeline.
The flue heat exchange section pipeline is arranged in a two-way roundabout manner in the flue 4-1, and the arrangement plane is vertical to the flow direction of flue gas; the heat transfer oil heat exchange section pipeline adopts double-path circuitous arrangement in the high-level oil tank 3-5.
A support operation platform 4-3 is arranged on the outer side of the desulfurizer powder bin 1-1, and the support operation platform 4-3 is fixedly connected with a flue support; an electric hoist 4-2 is arranged above the corresponding desulfurizer powder bin 1-1 of the supporting operation platform 4-3.
Sodium bicarbonate desulfurizer preparation facilities's working process as follows:
1) lifting the bagged sodium bicarbonate to the upper part of a feeding hole of the desulfurizer powder bin 1-1 by the electric hoist 4-2, and after the bottom of the packaging bag is opened, allowing sodium bicarbonate particles to fall into the desulfurizer powder bin 1-1;
2) in the process of storing the sodium bicarbonate particles in the desulfurizer powder bin 1-1, carrying out heat tracing on the desulfurizer powder bin 1-1 through the low-temperature heat conduction oil coil 3-3; conducting oil in the low-temperature heat conducting oil coil pipe 3-3 circularly exchanges heat through a high-level oil tank 3-5, so that the temperature of the conducting oil in the heat tracing section pipeline is kept at 45-55 ℃; the environmental temperature in the desulfurizer powder bin 1-1 is kept at 30-50 ℃;
3) a flue gas heat exchange section pipeline of the high-temperature heat conduction oil coil pipe 3-1 exchanges heat with flue gas with the temperature of more than 200 ℃ in a flue 4-1, heated high-temperature heat conduction oil enters a heat conduction oil heat exchange section pipeline under the action of a high-temperature oil circulating pump 3-2 to exchange heat with heat conduction oil in a high-level oil tank 3-5, and low-temperature heat conduction oil which exchanges heat with the high-temperature heat conduction oil enters a low-temperature heat conduction oil coil pipe 3-3 to circulate;
4) the high-level oil tank 3-5 is provided with a temperature measuring device, when the temperature of the heat conducting oil in the high-level oil tank 3-5 is increased to a set upper limit temperature, the high-temperature oil circulating pump 3-2 is closed through the control system, the electric valve 3-7 and the low-temperature oil circulating pump 3-4 are simultaneously opened, and the heat conducting oil in the high-level oil tank 3-5 carries out heat tracing on the desulfurizer powder bin 1-1 through the low-temperature heat conducting oil coil 3-3; when the temperature of the heat-conducting oil in the high-level oil tank 3-5 is reduced to a set lower limit temperature, the control system starts the high-temperature oil circulating pump 3-2 to continue to heat the heat-conducting oil in the high-level oil tank 3-5;
5) sodium bicarbonate particles in the desulfurizer powder bin 1-1 enter the mill 2-1 through the discharge device 1-2, and after the sodium bicarbonate particles are ground to a set particle size by the mill 2-1, the sodium bicarbonate particles are conveyed into the flue 4-1 through the wind conveying pipeline 2-3 by the conveying fan 2-2 to desulfurize the flue gas.
The utility model relates to a sodium bicarbonate desulfurizer preparation device, which comprises a sodium bicarbonate desulfurizer storage unit, a sodium bicarbonate desulfurization preparation unit and a heat exchange unit; the sodium bicarbonate desulfurizer storage unit comprises a desulfurizer powder bin 1-1, a discharging device 1-2, a pressure relief pipe 1-3 and the like; the sodium bicarbonate desulfurization preparation unit comprises a mill 2-1, a conveying fan 2-2, a wind conveying pipeline 2-3 and the like. The heat exchange unit comprises a high-temperature heat conduction oil coil pipe 3-1, a high-temperature oil circulating pump 3-2, a low-temperature heat conduction oil coil pipe 3-3, a low-temperature oil circulating pump 3-4, a high-level oil tank 3-5, a temperature control device 3-6 and the like.
An electric hoist 4-2 is arranged above the desulfurizer powder bin 1-1, the electric hoist is arranged on a supporting operation platform 4-3, the supporting operation platform 4-3 is simultaneously used for the operation of loading sodium bicarbonate and loading the sodium bicarbonate into the desulfurizer powder bin 1-1 for storage, the desulfurizer powder bin 1-1 is a vertical storage bin, and the periphery of the desulfurizer powder bin is fixed by the supporting operation platform 4-3. The desulfurizer powder bin 1-1 is arranged close to the flue 4-1.
The heat exchange unit is divided into a high-temperature oil circulation system and a low-temperature oil circulation system, and the two systems are respectively provided with a corresponding heat conduction oil coil and a heat conduction oil circulation pump. The heat conducting oil in the low-temperature oil circulating system is stored in the high-level oil tank, exchanges heat with the high-temperature heat conducting oil in the high-temperature oil circulating system, and controls the operation of the two circulating systems through the temperature control device.
The mill 2-1 is arranged below the desulfurizer powder bin and is connected with the discharging device 1-2 at the bottom of the desulfurizer powder bin 1-1, the inlet of the conveying fan 2-2 is connected with the outlet of the mill 2-1, the outlet of the conveying fan 2-2 is connected with the wind conveying pipeline 2-3, and the sodium bicarbonate fine powder is conveyed into the flue 4-1 through the wind conveying pipeline 2-3 for flue gas desulfurization and purification.
The top of the high-level oil tank 3-5 is provided with a temperature control device 3-6, the temperature control device 3-6 monitors the oil temperature in the high-level oil tank 3-5 through a temperature measuring device, controls the opening and closing of the high-temperature oil circulating pump 3-2 and the low-temperature oil circulating pump 3-4 and the opening and closing of the electric valve 3-7 according to the temperature limit value set by the control system, realizes the control of the oil temperature of the heat conducting oil in the high-level oil tank 3-5, and then carries out heat tracing on the desulfurizer powder bin 1-1 through the low-temperature heat conducting oil coil 3-3, so that the proper temperature is kept in the desulfurizer powder bin 1-1.
The heat conduction oil is selected from heat conduction oil suitable for heat transfer at 30-200 ℃, and stable and safe operation of the system is ensured.
The top of the desulfurizer powder bin is provided with a pressure relief pipe 1-3 connected with the flue 4-1 to form pressure in the direction from the desulfurizer powder bin 1-1 to the flue 4-1, and the pressure can effectively offset positive pressure generated in the sodium bicarbonate charging process, so that the sodium bicarbonate can be charged smoothly.
The charged sodium bicarbonate is stored in the desulfurizing agent powder silo 1-1 for a certain period of time due to the production and system operation requirements. If the sodium bicarbonate comes into contact with humid air at this time, it is gradually deliquesced. In order to avoid the above situation, the desulfurizing agent powder bin 1-1 needs to be subjected to heat tracing to ensure that the environment where the powder sodium bicarbonate is located is dry.
The utility model discloses in, the ambient temperature in desulfurizer powder storehouse 1-1 keeps at 30 ~ 50 ℃, in this temperature range, can enough prevent sodium bicarbonate deliquescence, also can avoid sodium bicarbonate to be heated and decompose into sodium carbonate. In addition, the heat required by heat tracing is low when the temperature is maintained, and the temperature of the flue gas in the flue 4-1 is only slightly reduced, so that the subsequent working section cannot be adversely affected.
Sodium bicarbonate in the desulfurizer powder bin 1-1 continuously enters the mill 2-1 through the discharging device 1-2, sodium bicarbonate particles are ground by the mill 2-1 to the particle size meeting the desulfurization requirement and then are conveyed into the flue 4-1 through the conveying fan 2-2 and the pneumatic conveying pipeline 2-3, and due to the adoption of short-distance conveying, the full pressure and the motor power of the conveying fan 2-2 are lower, and the power consumption is low.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (9)
1. The device for preparing the sodium bicarbonate desulfurizer is characterized by comprising a sodium bicarbonate desulfurizer storage unit, a sodium bicarbonate desulfurizer preparation unit and a heat exchange unit; the sodium bicarbonate desulfurizer storage unit is provided with a desulfurizer powder bin, the top of the desulfurizer powder bin is provided with a feed inlet, the bottom of the desulfurizer powder bin is provided with a discharge port, and the discharge port is provided with a discharge device; the sodium bicarbonate desulfurizer preparation unit consists of a mill, a conveying fan and a wind power conveying pipeline, wherein a material inlet of the mill is connected with a discharge hole of the discharging device, a material outlet of the mill is connected with one end of the wind power conveying pipeline through the conveying fan, and the other end of the wind power conveying pipeline is connected with a desulfurizer inlet arranged on a flue; the heat exchange unit consists of a high-temperature heat-conducting oil coil, a high-temperature oil circulating pump, a low-temperature heat-conducting oil coil, a low-temperature oil circulating pump and a high-level oil tank; the high-temperature heat-conducting oil coil pipe consists of a flue heat exchange section pipeline, a connecting section pipeline and a heat-conducting oil heat exchange section pipeline, wherein the flue heat exchange section pipeline is positioned in a flue, the heat-conducting oil heat exchange section pipeline is positioned in a high-level oil tank, and a high-temperature oil circulating pump is arranged on the connecting section pipeline between the flue heat exchange section pipeline and the heat-conducting oil heat exchange section pipeline; the high-level oil tank is internally injected with heat conduction oil, a heat conduction oil inlet and a heat conduction oil outlet are arranged, the low-temperature heat conduction oil coil pipe is composed of an outlet connecting section pipeline, a heat tracing section pipeline and an inlet connecting section pipeline, the heat tracing section pipeline is wound outside the desulfurizer powder bin, the heat conduction oil outlet of the high-level oil tank sequentially passes through the outlet connecting section pipeline, the heat tracing section pipeline and the inlet connecting section pipeline to be connected with the heat conduction oil inlet, and the inlet connecting section pipeline is provided with a low-temperature oil circulating pump.
2. The device for preparing the sodium bicarbonate desulfurizer as claimed in claim 1, wherein a pressure relief port is further arranged at the top of the desulfurizer powder bin, the pressure relief port is connected with one end of a pressure relief pipe through a pressure relief valve, and the other end of the pressure relief pipe is connected with a flue.
3. The apparatus of claim 1, wherein the desulfurizing agent powder bin is disposed near the flue.
4. The apparatus of claim 1, wherein the pipeline of the outlet connection section is provided with an electric valve at the downstream of the low temperature oil circulation pump.
5. The apparatus of claim 1, wherein a check valve is disposed on the inlet connection section.
6. The apparatus of claim 1, wherein a temperature control device is disposed at the top of the high-level oil tank, the temperature control device comprises a temperature measuring device and a control system, and the temperature measuring device is interlocked with the high-temperature oil circulating pump, the low-temperature oil circulating pump and the electric valve through the control system.
7. The apparatus for preparing sodium bicarbonate desulfurizer as claimed in claim 1, wherein the heat tracing section pipeline is spirally arranged along the height direction of the desulfurizer powder bin, and the outside of the heat tracing section pipeline is provided with a heat insulation layer.
8. The apparatus for preparing sodium bicarbonate desulfurizer as claimed in claim 1, wherein the heat exchange section of the flue is arranged in a two-way roundabout way in the flue, and the arrangement plane is perpendicular to the flow direction of the flue gas; the heat transfer oil heat exchange section pipeline adopts double-path circuitous arrangement in the high-level oil tank.
9. The apparatus for preparing sodium bicarbonate desulfurizer as claimed in claim 1, wherein a support operation platform is provided outside the desulfurizer powder bin, and the support operation platform is fixedly connected with the flue support; an electric hoist is arranged above the supporting operation platform corresponding to the desulfurizer powder bin.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123012561.8U CN216726595U (en) | 2021-12-02 | 2021-12-02 | Sodium bicarbonate desulfurizer preparation facilities |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123012561.8U CN216726595U (en) | 2021-12-02 | 2021-12-02 | Sodium bicarbonate desulfurizer preparation facilities |
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