CN212309123U

CN212309123U - Useless tail gas treatment ash backflow equipment that burns of danger

Info

Publication number: CN212309123U
Application number: CN202020786738.6U
Authority: CN
Inventors: 陆胜; 谢能; 邵文林
Original assignee: Jiangsu Jing Nan Environmental Protection Science And Technology Co ltd
Current assignee: Jiangsu Jing Nan Environmental Protection Science And Technology Co ltd
Priority date: 2020-05-13
Filing date: 2020-05-13
Publication date: 2021-01-08
Anticipated expiration: 2030-05-13

Abstract

The utility model discloses a hazardous waste incineration tail gas treatment ash backflow device, which comprises a lime bin, a backflow ash bin, a main device dry-type deacidification tower and a bag-type dust remover; the outlet of the lime bin is connected with a venturi through a screw feeder, the venturi conveys fresh slaked lime into a dry deacidification tower through a connecting high-pressure fan, a return ash nozzle of the dry deacidification tower is connected with a return ash discharge port of a return ash bin and a return air port of a smoke outlet pipe of a bag-type dust remover through a pipeline, the pipeline is provided with the return high-pressure fan, a smoke outlet of the dry deacidification tower is connected with the bag-type dust remover through a pipeline, an ash outlet at the bottom of the bag-type dust remover is connected with the return ash bin through a pipeline, and collected fly ash is discharged into the return ash bin. The utility model greatly reduces the operation cost of enterprises by refluxing most of the slaked lime with deacidification efficiency; meanwhile, a wet deacidification system is not required to be started, the tail gas acidity index can reach the standard, no sewage is generated, and the pollution to the environment is reduced.

Description

Useless tail gas treatment ash backflow equipment that burns of danger

Technical Field

The utility model relates to a useless tail gas treatment ash backflow equipment that burns of danger belongs to energy-concerving and environment-protective technical field.

Background

Semi-dry deacidification of tail gas treatment is inefficient among the hazardous waste incinerator project, and tail gas is up to standard mainly relies on wet process deacidification, can cause a large amount of sewage to produce, need be equipped with multiple auxiliary assembly simultaneously and solve the sewage problem, and not only production running cost is high but also desalination equipment is inefficient, consequently need a section can alleviate tail gas wet process burden equipment urgently, alleviates the equipment of enterprise's running cost.

SUMMERY OF THE UTILITY MODEL

In order to make hazardous waste burn tail gas can satisfy pollution control standard requirement, can bring the pollution abatement again for the enterprise and alleviate the running cost, the utility model provides a dangerous useless tail gas treatment ash backflow device that burns.

The utility model adopts the technical proposal that: a hazardous waste incineration tail gas treatment ash backflow device comprises a lime bin, a backflow ash bin, a main device dry type deacidification tower and a bag-type dust remover; the outlet of the lime bin is connected with a venturi through a screw feeder, one end of the venturi is connected with a high-pressure fan, the other end of the venturi is connected with a lime nozzle of a dry-type deacidification tower to convey fresh slaked lime into the dry-type deacidification tower, a return ash nozzle of the dry-type deacidification tower is connected with a return ash discharge port of the return ash bin and a smoke outlet pipe return air port of a bag-type dust collector through a pipeline, a return high-pressure fan is arranged on the pipeline between the return ash discharge port of the return ash bin and the smoke outlet pipe return air port of the bag-type dust collector to form a return system, a smoke outlet of the dry-type deacidification tower is connected with the bag-type dust collector through a pipeline, an ash outlet at the bottom of the bag-type dust collector is connected with.

Furthermore, the lime bin comprises a lime bin body, a lime bin inlet, a lime bin level meter, a lime bin stirrer, a lime bin air cannon and a lime bin top dust remover, lime is input into the lime bin through the lime bin inlet, a material layer in the bin is controlled by the level meter, the lime bin top dust remover is used for preventing dust from flying outwards, and the lime bin stirrer and the lime bin air cannon are used for preventing a lime arch bridge in the bin.

Furthermore, a screw metering feeder is arranged at the bottom outlet of the lime bin, the lime bin feeds materials into the venturi tube in a metering mode through the screw metering feeder, and fresh slaked lime is conveyed into the dry deacidification tower through the venturi tube under the action of the high-pressure fan.

Furthermore, a lime nozzle, a flue gas inlet and outlet, an ash discharge port and a return ash nozzle are arranged on the dry-type deacidification tower, the flue gas of the front-section quench tower enters the dry-type deacidification tower through the flue gas inlet, and the wet flue gas and the slaked lime powder are subjected to full mixing reaction in the tower under the action of high-pressure air, so that deacidification is practiced.

Further, the ash storehouse of backward flow includes the storehouse body of backward flow, the ash storehouse top dust remover of backward flow, the ash storehouse agitator of backward flow, backward flow ash valve, backward flow ash storehouse level gauge, steam flowmeter, backward flow ash discharge valve and steam pipe valve, wherein the material bed in the material level gauge control backward flow ash storehouse, the top dust remover of storehouse prevents that the dust from rising outward, agitator and air bubble prevent the interior ash arch bridge of backward flow of storehouse, the internal steam valves of backward flow storehouse lets in low pressure steam through steam flowmeter, the humidity that makes the ash that flows back under the ash storehouse agitator running action of backward flow improves.

Furthermore, a backflow fan of the backflow system controls backflow air quantity by utilizing hot flue gas at the outlet of the bag-type dust collector through a pipeline and a temperature and pressure sensing device, and adjusts the air quantity through frequency conversion, so that ash backflow is ensured to smoothly enter the dry-type deacidification tower, and certain wind power is achieved.

Furthermore, the bag-type dust collector mainly comprises a dust collector box body, a lift valve, a pulse valve, a filter bag, an ash bin level meter, an ash bin vibrator, an ash bin electric heater, an ash bin gate valve, a spiral ash collecting and discharging device and an ash discharging valve, wherein the bag-type dust collector is used for collecting return ash, fresh ash and fly ash generated by self garbage incineration, tail gas dust is ensured to reach the standard, meanwhile, slaked lime is attached to the surface of the bag for further deep deacidification, and the fly ash of the mobile phone is conveyed to the return ash bin through an ash bin spiral ash conveyor arranged at an outlet at the bottom.

The utility model has the advantages that: the utility model discloses the technique utilizes the return ash to improve the improvement of the benefit of slaked lime deacidification, because of the utilization efficiency of dry-type deacidification lime is low, if not flow back, need add a lot of fresh slaked lime if reaching very high deacidification efficiency, through flow back most slaked lime that has deacidification efficiency, reduced the running cost of enterprise to a great extent; simultaneously the utility model discloses alleviate the burden of follow-up wet process deacidification, operation control properly can need not to start wet process deacidification system, and tail gas acid index just can be up to standard, can accomplish not having sewage to produce, has reduced the pollution to the environment.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

FIG. 1 is a schematic diagram of the main process flow of the present invention.

Labeled as: 1-a lime bin inlet, 2-a lime bin level gauge, 3-a lime bin stirrer, 4-a lime bin air cannon, 5-a screw metering feeder, 6-a lime high pressure fan, 7-a Fang's pipe, 8-a lime bin top deduster, 9-a lime bin body, 10-a dry deacidification tower, 11-a deacidification tower flue gas inlet, 12-a deacidification tower ash outlet valve, 13-a lime nozzle, 14-a return ash nozzle, 15-a return ash bin top deduster, 16-a return ash bin stirrer, 17-a return ash bin, 18-a return ash outlet valve, 19-a return ash bin level gauge, 20-a steam flowmeter, 21-a return ash discharge valve, 22-a steam pipe valve, 23-a variable-frequency return high pressure fan, 24-a return air temperature and pressure instrument, 25-bag dust collector lifting valve, 26-bag dust collector pulse valve, 27-bag dust collector box body, 28-ash bin level meter, 29-ash bin vibrator, 30-ash bin electric heating, 31-ash bin gate valve, 32-ash bin spiral ash conveyer, 33-ash bin ash outlet valve and 34-bag dust collector exhaust pipe return air inlet

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, a hazardous waste incineration tail gas treatment ash backflow device comprises a lime bin, a backflow ash bin, a main device dry type deacidification tower and a bag-type dust remover; the outlet of the lime bin is connected with a venturi through a screw feeder, one end of the venturi is connected with a high-pressure fan, the other end of the venturi is connected with a lime nozzle of a dry-type deacidification tower to convey fresh slaked lime into the dry-type deacidification tower, a return ash nozzle of the dry-type deacidification tower is connected with a return ash discharge port of the return ash bin and a smoke outlet pipe return air port of a bag-type dust collector through a pipeline, a return high-pressure fan is arranged on the pipeline between the return ash discharge port of the return ash bin and the smoke outlet pipe return air port of the bag-type dust collector to form a return system, a smoke outlet of the dry-type deacidification tower is connected with the bag-type dust collector through a pipeline, an ash outlet at the bottom of the bag-type dust collector is connected with the.

The working principle of the device is as follows: the lime bin 9 is characterized in that lime is input into the lime bin through a pipeline by a lime tanker, a material layer in the bin is controlled by a lime bin material level meter 2, dust is prevented from flying outwards by a lime bin top dust remover, a lime bin stirrer 3 and a lime bin air cannon 4 prevent a lime arch bridge in the bin, then the lime bin falls to a spiral metering feeder 5 and is conveyed to a venturi 7, and then the lime enters the tower through a jet orifice 13 of the dry-type deacidification tower under the action of a lime high-pressure fan 6. The flue gas lime dust that dry-type deacidification tower 10 came out gets into in sack cleaner 27 together, through under the operation control of sack cleaner auxiliary assembly instrument, collect the flying ash, discharge and carry to the backward flow ash storehouse 17 in through the pipeline by the tripper, the material bed in the backward flow ash storehouse is controlled by backward flow ash storehouse level gauge 19 in the backward flow ash storehouse, prevent that the dust from flying outward by backward flow ash storehouse top dust remover 15, prevent the interior backward flow ash arch bridge of storehouse by backward flow ash storehouse agitator 16 and air cannon, and let in low pressure steam through steam valves 22 through steam flowmeter 20, make the humidity of backward flow ash improve under the operational effect of backward flow ash storehouse agitator 16, then backward flow ash storehouse 17 is discharged by the frequency conversion tripper. The variable-frequency backflow high-pressure fan 23 extracts part of the flue gas from the flue gas port 34 purified by the bag-type dust remover 27, controls the gas flow through the backflow air temperature and pressure instrument 24 on the pipeline to enter the tower through the bottom jet orifice 14 of the dry deacidification tower, and in addition, the backflow ash is discharged outside through the backflow ash outlet valve 18 at regular time and quantity, conveyed to an ash storage room to be stored and is sent to the outside to be buried.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the scope of the present invention in any way, and all technical solutions obtained by using equivalent substitution modes and the like fall within the scope of the present invention.

The utility model discloses the part that does not relate to all is the same with prior art or can adopt prior art to realize.

Claims

1. The ash backflow equipment for hazardous waste incineration tail gas treatment is characterized by comprising a lime bin, a backflow ash bin, a main equipment dry-type deacidification tower and a bag-type dust remover; the outlet of the lime bin is connected with a venturi through a screw feeder, one end of the venturi is connected with a high-pressure fan, the other end of the venturi is connected with a lime nozzle of a dry-type deacidification tower to convey fresh slaked lime into the dry-type deacidification tower, a return ash nozzle of the dry-type deacidification tower is connected with a return ash discharge port of the return ash bin and a smoke outlet pipe return air port of a bag-type dust collector through a pipeline, a return high-pressure fan is arranged on the pipeline between the return ash discharge port of the return ash bin and the smoke outlet pipe return air port of the bag-type dust collector to form a return system, a smoke outlet of the dry-type deacidification tower is connected with the bag-type dust collector through a pipeline, an ash outlet at the bottom of the bag-type dust collector is connected with.

2. The hazardous waste incineration tail gas treatment ash backflow device according to claim 1, wherein the lime bin comprises a lime bin body, a lime bin inlet, a lime bin level meter, a lime bin stirrer, a lime bin air cannon and a lime bin top dust remover, lime is input into the lime bin through the lime bin inlet, a material layer in the bin is controlled by the level meter, the lime bin top dust remover is used for preventing dust from rising outwards, and the lime bin stirrer and the lime bin air cannon are used for preventing a lime arch bridge in the bin.

3. The hazardous waste incineration tail gas treatment ash backflow device as claimed in claim 1 or 2, wherein a screw metering feeder is arranged at a bottom outlet of the lime bin, the lime bin is metered into the venturi through the screw metering feeder, and fresh slaked lime is conveyed into the dry deacidification tower through the venturi under the action of the high-pressure fan.

4. The hazardous waste incineration tail gas treatment ash backflow device as claimed in claim 1, wherein the dry type deacidification tower is provided with a lime nozzle, a flue gas inlet and outlet, an ash discharge port and a backflow ash nozzle, flue gas of the front section quench tower enters the dry type deacidification tower through the flue gas inlet, and wet flue gas and slaked lime powder are subjected to sufficient mixing reaction in the tower due to the action of high-pressure air to practice deacidification.

5. The hazardous waste incineration tail gas treatment ash backflow device according to claim 1, wherein the backflow ash bin comprises a backflow bin body, a backflow ash bin top dust remover, a backflow ash bin stirrer, a backflow ash discharge valve, a backflow ash bin level meter, a steam flow meter, a backflow ash discharge valve and a steam pipe valve, wherein the level meter controls a material layer in the backflow ash bin, the bin top dust remover prevents dust from rising outwards, the stirrer and an air cannon prevent a backflow ash arch bridge in the bin, low-pressure steam is introduced into the backflow bin body through the steam flow meter through the steam valve bank, and the humidity of backflow ash is improved under the operation action of the backflow ash bin stirrer.

6. The hazardous waste incineration tail gas treatment ash backflow device according to claim 1, wherein a backflow fan of the backflow system controls backflow air volume by utilizing hot flue gas at an outlet of a bag-type dust collector through a pipeline and a temperature and pressure sensing device, and the backflow fan adjusts air volume through frequency conversion to ensure that ash backflow smoothly enters a dry-type deacidification tower and has certain wind power.

7. The hazardous waste incineration tail gas treatment ash backflow device according to claim 1, wherein the bag-type dust remover mainly comprises a dust remover box body, a lift valve, a pulse valve, a filter bag, an ash bin level meter, an ash bin vibrator, an ash bin electric heating, an ash bin gate valve, a spiral ash collecting and discharging device and an ash discharging valve, the bag-type dust remover is used for collecting backflow ash, fresh ash and fly ash generated by self garbage incineration to ensure that tail gas dust reaches the standard, meanwhile slaked lime is attached to the surface of a bag to further perform deep deacidification, and the fly ash of a mobile phone is conveyed to the backflow ash bin through an ash bin spiral ash conveyor arranged at a bottom outlet.