CN215138598U

CN215138598U - Novel semi-dry desulfurization system

Info

Publication number: CN215138598U
Application number: CN202120640628.3U
Authority: CN
Inventors: 周建孝; 刘婷婷; 崔浩; 张丹
Original assignee: Shandong Huanneng Design Institute Co ltd
Current assignee: Shandong Huanneng Design Institute Co ltd
Priority date: 2021-03-30
Filing date: 2021-03-30
Publication date: 2021-12-14
Anticipated expiration: 2031-03-30

Abstract

The utility model discloses a novel semi-dry desulfurization system, including first roots's fan, second roots's fan, returning charge chute and consecutive lime hydrate storehouse, absorption tower, sack cleaner, chimney, install draught fan and return air duct on the pipeline of connecting sack cleaner and chimney, the one end of return air duct is installed between draught fan and chimney, and the other end is connected with second roots's fan's input tube, second roots's fan's output is connected with the lime hydrate storehouse through the pipeline, installs the shunt tubes on the return air duct. The utility model discloses a draw forth partly with clean high temperature flue gas behind the draught fan, under first roots's fan and second roots's fan's effect, let in lime slaking storehouse and returning charge chute in, not only can prevent that the material from making damp and hardening, influence the normal circulation of powder, guarantee the device's normal operating, but also the consumption of greatly reduced electric energy, reduction in production cost.

Description

Novel semi-dry desulfurization system

Technical Field

The utility model belongs to the technical field of the desulfurization, in particular to novel semi-dry desulfurization system.

Background

In the semi-dry desulfurization and dust removal process, air needs to be continuously introduced into the bottom of the slaked lime storage bin to ensure that the slaked lime material at the bottom of the storage bin is in a fluidized state, and the condition of bridging and blockage cannot occur, so that normal material conveying is influenced. Meanwhile, when the materials in the ash hopper of the dust collector flow back to the absorption tower through the return chute, air needs to be introduced into the return chute to ensure that the materials in the chute are in a fluidized state. Under humid and cold weather conditions such as overcast and rainy, autumn and winter and the like, an electric heater is often needed to be added, and fluidized air is heated and then flows into the bottom of the slaked lime bin and the bottom of the return chute to prevent materials from being wetted and hardened; the existing desulfurization dust removal device usually adopts a mode that a Roots blower is powered on a heater, fresh, dry and high-temperature air is introduced, smoothness of a conveying system is guaranteed, and although the mode can solve the problem that materials are affected with damp and hardened, the mode not only increases the loss of electric energy, but also greatly increases the production cost.

Disclosure of Invention

The utility model aims at overcoming not enough among the prior art, provide a novel semidry desulfurization system, electric heater has been removed to this system, draw forth partly through the clean high temperature flue gas behind the draught fan, under the effect of first roots's fan and second roots's fan, let in the lime storehouse that disappears and the returning charge chute in, not only can prevent that the material from making moist and hardening, influence the normal circulation of powder, guarantee the device's normal operating, the consumption of greatly reduced electric energy, reduction in production cost.

In order to realize the purpose, the utility model discloses a technical scheme is:

a novel semi-dry desulphurization system, which comprises a first Roots blower, a second Roots blower, a return chute, a slaked lime bin, an absorption tower, a bag-type dust remover and a chimney which are connected in sequence, an induced draft fan and a return air pipe are arranged on a pipeline connecting the bag-type dust collector and the chimney, one end of the return air pipe is arranged between the induced draft fan and the chimney, the other end of the return air pipe is connected with an input pipe of a second Roots blower, the output end of the second Roots blower is connected with the slaked lime bin through a pipeline, a shunt tube is arranged on the return air duct, one end of the shunt tube is arranged on one side of the second Roots blower on the return air duct, the other end of the shunt tube is connected with the input end of the first Roots blower, the output end of the first Roots blower is connected with the return chute, one end of the material returning chute is arranged at the bottom of the absorption tower, and the other end of the material returning chute is arranged on an ash hopper at the bottom of the bag-type dust collector.

Preferably, a fluidizing device is arranged at the bottom of the slaked lime bin, one end of the fluidizing device is arranged on the slaked lime bin, the other end of the fluidizing device is connected with the output end of the second roots blower through a pipeline, a vacuum pressure release valve and a bin top dust remover are arranged at the top of the slaked lime bin, the bin top dust remover is arranged at one side of the slaked lime bin, the vacuum pressure release valve is arranged at one side of the bin top dust remover, the fluidizing device can uniformly spray high-temperature air into the slaked lime bin to ensure the normal circulation of powder in the slaked lime bin, the bin top dust remover can absorb dust splashed out from the top of the slaked lime bin, the cleanness and sanitation of the working environment are ensured, the vacuum pressure release valve can release the pressure in the slaked lime bin to prevent the overhigh pressure in the slaked lime bin and damage the slaked lime bin to influence the normal work, and the service life of the slaked lime bin is greatly prolonged, the use cost is reduced.

Preferably, still including being equipped with the manual picture peg door between slaked lime storehouse and absorption tower, rotary feeder, the screw feeder of weighing, electronic picture peg door, and the pipeline of connecting slaked lime storehouse and absorption tower is in proper order with manual picture peg door, rotary feeder, the screw feeder of weighing, electronic picture peg door is established ties, guarantee that the material can enter into the absorption tower from the slaked lime storehouse, electronic picture peg board and manual picture peg board can be controlled the input of material, and the screw feeder of weighing can weigh the material of inputing in the absorption tower, guarantee that the material can obtain abundant processing, material desulfurization quality has been guaranteed greatly.

Preferably, install governing valve and plenum box on the returning charge chute, the plenum box is installed and is close to the one end of sack cleaner on the returning charge chute, still installs the connecting pipe on the plenum box, the one end of connecting pipe is installed on the plenum box, and the other end is installed on the storehouse pump, and installs pneumatic push-pull valve on the connecting pipe, the governing valve is installed on the returning charge chute, and the returning charge chute can be with the solid material that realizes the gas-solid separation in inputing the absorption tower once more, and the plenum box is used for distributing the material, and partly inputs the absorption tower in through the returning charge chute, and storehouse pump department is imported through the connecting pipe to another part, and the governing valve conveniently adjusts the volume of returning the material in the absorption tower through the returning charge chute.

Preferably, install a plurality of branch pipes on the shunt tubes, a plurality of branch pipes are connected with returning charge chute, plenum box and connecting pipe respectively, can dry from the material of sack cleaner output through high-temperature gas, have guaranteed the drying of material for the material is in fluidization state, guarantees the normal circulation of material.

The utility model has the advantages that:

1) this system has removed electric heater, draws forth partly through the clean high temperature flue gas behind the draught fan, under first roots's fan and second roots's fan's effect, lets in slaked lime storehouse and returning charge chute in, not only can prevent that the material from weing and hardening, influences the normal circulation of powder, guarantees the device's normal operating, the consumption of greatly reduced electric energy, reduction in production cost.

2) This device fluidizer can be with even spraying of high temperature air in the slaked lime storehouse, guarantee the normal circulation of powder in the slaked lime storehouse, the storehouse top dust remover can absorb the dust that splashes out from the slaked lime storehouse top, the clean health of operational environment has been guaranteed, vacuum pressure relief valve can release the inside pressure in slaked lime storehouse, it is too big to prevent slaked lime storehouse internal pressure, cause the slaked lime storehouse to damage and influence normal work, the life in slaked lime storehouse has been improved greatly, and the use cost is reduced.

3) This device is still including being equipped with the manual picture peg door between slaked lime storehouse and absorption tower, rotary feeder, the screw feeder of weighing, electronic picture peg door, and the pipeline of connecting slaked lime storehouse and absorption tower is in proper order with manual picture peg door, rotary feeder, the screw feeder of weighing, electronic picture peg door is established ties, guarantee that the material can enter into the absorption tower from the slaked lime storehouse, electronic picture peg board and manual picture peg board can control the input of material, and the screw feeder of weighing can weigh the material of input in the absorption tower, guarantee that the material can obtain abundant processing, material desulfurization quality has been guaranteed greatly.

4) This device returns the material chute and can will realize the solid material that the gas-solid separation came out input the absorption tower once more, and the plenum box is used for distributing the material, and partly inputs the absorption tower in through returning the material chute, and storehouse pump department is input through the connecting pipe to another part, and the quantity of the material that returns in the absorption tower through returning the material chute is conveniently adjusted to the governing valve.

5) Install a plurality of branch pipes on this device shunt tubes, a plurality of branch pipes are connected with returning charge chute, plenum box and connecting pipe respectively, can dry from the material of sack cleaner output through high-temperature gas, have guaranteed the drying of material for the material is in fluidized state, guarantees the normal circulation of material.

Drawings

Fig. 1 is a schematic structural diagram of the prior art of the present invention.

Fig. 2 is a schematic structural diagram of the present invention.

In the figure: 1. a dust remover at the top of the bin; 2. a vacuum pressure relief valve; 3. an absorption tower; 4. a bag-type dust collector; 5. adjusting a valve; 6. an induced draft fan; 7. a chimney; 8. a first Roots blower; 9. an air-filled tank; 10. a return chute; 11. a spiral weighing feeder; 12. a second Roots blower; 13. an electrically-powered gate; 14. a rotary feeder; 15. a manual paddle door; 16. a fluidizing device; 17. a slaked lime bin; 18. an electric heater; 19. a shunt tube; 20. and a return air pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to fig. 1-2, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description of the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

A novel semi-dry desulfurization system comprises a first Roots blower 8, a second Roots blower 12, a return chute 10, a slaked lime bin 17, an absorption tower 3, a bag-type dust collector 4 and a chimney 7 which are sequentially connected, wherein an induced draft fan 6 and a return duct 20 are arranged on a pipeline connecting the bag-type dust collector 4 and the chimney 7, one end of the return duct 20 is arranged between the induced draft fan 6 and the chimney 7, the other end of the return duct is connected with an input pipe of the second Roots blower 12, the output end of the second Roots blower 12 is connected with the slaked lime bin 17 through a pipeline, a shunt pipe 19 is arranged on the return duct 20, one end of the shunt pipe 19 is arranged on one side of the second Roots blower 12 on the return duct 20, the other end of the shunt pipe 19 is connected with the input end of the first Roots blower 8, the output end of the first Roots blower 8 is connected with the return chute 10, one end of the return chute 10 is arranged at the bottom of the absorption tower 3, the other end is arranged on an ash bucket at the bottom of the bag-type dust collector 4.

The bottom of a slaked lime bin 17 is provided with a fluidizing device 16, one end of the fluidizing device 16 is arranged on the slaked lime bin 17, the other end of the fluidizing device 16 is connected with the output end of a second Roots blower 12 through a pipeline, the top of the slaked lime bin 17 is provided with a vacuum pressure release valve 2 and a bin top dust remover 1, the bin top dust remover 1 is arranged at one side of the slaked lime bin 17, the vacuum pressure release valve 2 is arranged at one side of the bin top dust remover 1, the fluidizing device 16 can uniformly spray high-temperature air into the slaked lime bin 17 to ensure the normal circulation of powder in the slaked lime bin 17, the bin top dust remover 1 can absorb dust splashed from the top of the slaked lime bin 17, the cleanness and sanitation of the working environment are ensured, the vacuum pressure release valve 2 can release the pressure in the slaked lime bin 17 to prevent the over-high pressure in the slaked lime bin 17 from damaging the slaked lime bin 17 to influence the normal work, greatly prolongs the service life of the slaked lime bin 17 and reduces the use cost.

Still including establishing the manual picture peg door 15 between slaked lime storehouse 17 and absorption tower 3, rotary feeder 14, the screw feeder 11 of weighing, electronic picture peg door 13, and the pipeline of connecting slaked lime storehouse 17 and absorption tower 3 is with manual picture peg door 15 in proper order, rotary feeder 14, the screw feeder 11 of weighing, electronic picture peg door 13 is established ties, guarantee that the material can enter into absorption tower 3 from slaked lime storehouse 17, electronic picture peg board and manual picture peg board can control the input of material, and the screw feeder 11 of weighing can weigh the material of inputing in the absorption tower 3, guarantee that the material can obtain abundant processing, material desulfurization quality has been guaranteed greatly.

Install governing valve 5 and plenum box 9 on return chute 10, plenum box 9 installs the one end that is close to sack cleaner 4 on return chute 10, still installs the connecting pipe on plenum box 9, the one end of connecting pipe is installed on plenum box 9, and the other end is installed on the storehouse pump, and installs pneumatic push-pull valve on the connecting pipe, governing valve 5 is installed on return chute 10, and return chute 10 can be with realizing that the solid material that the gas-solid separation came out inputs absorption tower 3 once more in, and plenum box 9 is used for the distribution material, and partly inputs absorption tower 3 through return chute 10 in, and another part inputs storehouse pump department through the connecting pipe, and governing valve 5 conveniently adjusts the volume of returning the material in the absorption tower 3 through return chute 10.

Install a plurality of branch pipes on the shunt tubes 19, a plurality of branch pipes are connected with returning charge chute 10, plenum box 9 and connecting pipe respectively, can dry the material of following sack cleaner 4 output through high-temperature gas, have guaranteed the drying of material for the material is in fluidization state, guarantees the normal circulation of material.

This device draws forth partly through the clean high temperature flue gas behind the draught fan 6, under the effect of first roots's fan 8 and second roots's fan 12, lets in slaking lime storehouse 17 and return chute 10, not only can prevent that the material from making moist and hardening, influences the normal circulation of powder, guarantees the device's normal operating, but also the consumption of greatly reduced electric energy, reduction in production cost.

The foregoing is merely exemplary and illustrative of the structure of the invention, and various modifications, additions and substitutions as described in relation to the specific embodiments described herein may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.

Claims

1. A novel semi-dry desulphurization system, which comprises a first Roots blower, a second Roots blower, a return chute, a slaked lime bin, an absorption tower, a bag-type dust remover and a chimney which are connected in sequence, it is characterized in that a draught fan and an air return pipe are arranged on a pipeline connecting the bag-type dust remover and the chimney, one end of the return air pipe is arranged between the induced draft fan and the chimney, the other end of the return air pipe is connected with an input pipe of a second Roots blower, the output end of the second Roots blower is connected with the slaked lime bin through a pipeline, a shunt tube is arranged on the return air duct, one end of the shunt tube is arranged on one side of the second Roots blower on the return air duct, the other end of the shunt tube is connected with the input end of the first Roots blower, the output end of the first Roots blower is connected with the return chute, one end of the material returning chute is arranged at the bottom of the absorption tower, and the other end of the material returning chute is arranged on an ash hopper at the bottom of the bag-type dust collector.

2. A novel semi-dry desulfurization system as set forth in claim 1, wherein a fluidizing device is installed at the bottom of the slaked lime bin, one end of the fluidizing device is installed on the slaked lime bin, the other end of the fluidizing device is connected with the output end of the second roots blower through a pipe, a vacuum pressure release valve and a bin top dust collector are installed at the top of the slaked lime bin, the bin top dust collector is installed at one side of the slaked lime bin, and the vacuum pressure release valve is installed at one side of the bin top dust collector.

3. A novel semi-dry desulfurization system according to claim 1, characterized in that it further comprises a manual insertion plate door, a rotary feeder, a spiral weighing feeder and an electric insertion plate door which are arranged between the slaked lime bin and the absorption tower, and the pipeline connecting the slaked lime bin and the absorption tower connects the manual insertion plate door, the rotary feeder, the spiral weighing feeder and the electric insertion plate door in series in turn.

4. A novel semi-dry desulfurization system as claimed in claim 1, characterized in that the return chute is provided with an adjusting valve and an inflation box, the inflation box is arranged at one end of the return chute close to the bag-type dust remover, the inflation box is further provided with a connecting pipe, one end of the connecting pipe is arranged on the inflation box, the other end of the connecting pipe is arranged on the bin pump, the connecting pipe is provided with a pneumatic gate valve, and the adjusting valve is arranged on the return chute.

5. A novel semi-dry desulfurization system as set forth in claim 4, wherein a plurality of branch pipes are installed on said flow dividing pipe, and said plurality of branch pipes are connected to said return chute, said air-charging box and said connecting pipe, respectively.