CN219083111U

CN219083111U - Environment-friendly and energy-saving calcium carbide furnace purification ash treatment system

Info

Publication number: CN219083111U
Application number: CN202223328839.7U
Authority: CN
Inventors: 王东平; 袁春亮; 李坤; 孙学问; 董松; 陆代勤
Original assignee: Yunnan Puyang Coal Chemical Co ltd
Current assignee: Yunnan Puyang Coal Chemical Co ltd
Priority date: 2022-12-13
Filing date: 2022-12-13
Publication date: 2023-05-26
Anticipated expiration: 2032-12-13

Abstract

The utility model discloses an environment-friendly and energy-saving calcium carbide furnace ash purifying treatment system, which comprises a storage tank body, a conveying device and an incineration device, wherein the storage tank body is connected with the incineration device through the conveying device, the incineration device is an incinerator, a powder ash combustion supply mechanism is arranged at an inlet part of a combustion chamber of the incinerator, the powder ash combustion supply mechanism comprises a booster fan, a powder dispersing pipe, a collecting equalizing pipe and a combustion nozzle, an air inlet end of the booster fan is connected with the conveying device, an air outlet end of the booster fan is connected with the powder dispersing pipe, the powder dispersing pipe is connected with the collecting equalizing pipe, the combustion nozzle is arranged at an outlet end of the collecting equalizing pipe, and the collecting equalizing pipe and the combustion nozzle are positioned in the combustion chamber. The utility model collects, stores and conveys the purified ash in a whole-course closed way, effectively isolates the contact between the purified ash and the air, and solves the potential safety hazard in the process of collecting and conveying the purified ash; solves the defects of the traditional transportation landfill, reduces the treatment cost, realizes the harmless treatment and recycling of the purified ash, and has good economic and environmental benefits.

Description

Environment-friendly and energy-saving calcium carbide furnace purification ash treatment system

Technical Field

The utility model belongs to the technical field of calcium carbide production and processing, and particularly relates to an environment-friendly and energy-saving calcium carbide furnace ash purifying treatment system.

Background

After the calcium carbide tail gas generated in the calcium carbide production line is subjected to multistage sedimentation, cooling and dust removal, the collected solid dust is commonly called as purified ash. The purified ash is easy to float, contains tar, has strong viscosity of calcium carbide powder, contains sulfur and phosphorus, and is self-burned after being exposed in air for three hours. The general treatment mode of the carbide industry for purifying ash is to use the car after the humidification and landfill, and this mode not only wastes resources, still in transportation, landfill process, because of the dust extremely flies upward, causes serious environmental pollution, in addition because the extremely easy spontaneous combustion of purifying ash in contact with the air, seriously threatens the safety of driver and landfill place peripheral living beings.

Along with the improvement of the consciousness of energy conservation and environmental protection and comprehensive recycling of wastes, according to the fact that the purified ash has a large amount of heat energy and combines the characteristics of mineral components (a large amount of carbon materials, calcium oxide powder, a small amount of calcium carbide powder, sulfur, phosphorus, CO and the like) carried by the purified ash, the purified ash also has a certain comprehensive utilization value, so that the development of a treatment device capable of collecting, storing and recycling the purified ash is a key for solving the problem.

Disclosure of Invention

The utility model provides an environment-friendly and energy-saving calcium carbide furnace ash purifying treatment system.

The utility model is realized by the following technical scheme: the device comprises a storage tank body, a conveying device and an incineration device, wherein the storage tank body is connected with the incineration device through the conveying device, the incineration device is an incinerator, a powder ash combustion supply mechanism is arranged at an inlet part of a combustion chamber of the incinerator, the powder ash combustion supply mechanism comprises a booster fan, a powder dispersing pipe, a collecting equalizing pipe and a combustion nozzle, an air inlet end of the booster fan is connected with the conveying device, an air outlet end of the booster fan is connected with the powder dispersing pipe, the powder dispersing pipe is connected with the collecting equalizing pipe, an outlet end of the collecting equalizing pipe is provided with the combustion nozzle, and the collecting equalizing pipe and the combustion nozzle are positioned in the combustion chamber; wherein, loose powder pipe includes feeding awl cover, ejection of compact awl cover, two at least arc structure's branch pipe, and the one end fixed connection feeding awl cover of each branch pipe, the inlet end of booster fan is connected to feeding awl cover, and the other end fixed connection ejection of compact awl cover, ejection of compact awl cover connect collect the equalizing pipe, and feeding awl cover, ejection of compact awl cover, branch pipe connection combination are diamond structure on the ejection of compact awl cover, the one end opposite with its ejection of compact direction is equipped with combustion-supporting trachea, combustion-supporting trachea is connected with the combustion-supporting thing pipe.

Further, the top center department of the holding vessel body set up the feed inlet, be equipped with the heat dissipation ring pipe in top periphery department, the heat dissipation ring pipe is concentric circle form setting with the feed inlet, the heat dissipation ring pipe is equipped with the pipe connection heat dissipation source all be equipped with a plurality of cooling tubes that extend to its interior lower part around the axial lead circumference in the holding vessel body, the cooling tube is "U" shape knot, the one end of cooling tube wears out the lid upwards and connects the heat dissipation ring pipe, the thermal-arrest ring pipe is connected to the other end, the thermal-arrest ring pipe sets up in the internal upper portion of holding vessel, is equipped with the heat pipe on the thermal-arrest ring pipe and wears out the holding vessel body, all set up a plurality of temperature-sensing ware from bottom to top on the inner wall of the holding vessel body, set up the bin outlet in the holding vessel body bottom.

Further, the conveying device is a pipeline type screw conveyor, the screw in the pipeline type screw conveyor is shaftless, a heat dissipation outer pipe is coaxially arranged outside a conveying pipe in the conveying device, the heat dissipation outer pipe and the conveying pipe are arranged in a clearance mode, and heat dissipation fins are uniformly distributed on the outer wall of the conveying pipe.

The beneficial effects of the utility model are as follows: 1. the utility model firstly collects, stores, cools and dissipates heat in a closed way, effectively isolates the contact between the purified ash and the air, collects and recycles the high heat energy of the purified ash, reduces the temperature of the purified ash, and is convenient for collection and storage;

2. in the conveying process, the pipeline type screw conveyor is utilized for closed conveying, and the whole process is free of contact with air, so that the problem of spontaneous combustion or flash explosion possibly occurring in the purified ash is prevented, dust pollution is avoided, blocking is avoided, meanwhile, in order to ensure the conveying stability, a cooling fin is additionally arranged for cooling, the heat of the purified ash is prevented from damaging a conveying device, the conveying process is safe, environment-friendly and reliable, and the potential safety hazard in the process of collecting and conveying the purified ash is solved;

3. the special powder ash combustion supply mechanism is arranged, the purified ash is firstly carried out dispersion and transportation, then the generated negative pressure is collected to automatically suck combustion-supporting gas (air) and combustion-supporting substances (blue carbon powder), meanwhile, the dispersion and transportation mode of the collection can also improve the mixing uniformity of the purified ash, the combustion-supporting gas (air) and the combustion-supporting substances (blue carbon powder), and the burning sufficiency of the purified ash is further improved; the utility model uses the purified ash as fuel, thereby greatly reducing the traditional fuel consumption of the incineration device 3, solving the defect of traditional transportation landfill, eliminating the potential safety hazard, greatly reducing the treatment cost, achieving multiple purposes, realizing the harmless treatment and recycling of the purified ash, and generating good economic benefit, social benefit and environmental protection benefit.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic diagram of a storage tank according to the present utility model;

FIG. 3 is a schematic view of a conveying apparatus according to the present utility model;

FIG. 4 is a schematic view of the incineration apparatus according to the present utility model;

reference numerals in the drawings: 1 to a storage tank body, 1a to a feed inlet, 1b to a heat dissipation ring pipe, 1c to a heat dissipation pipe, 1d to a heat collection ring pipe, 1e to a temperature sensor, 1f to a discharge screw, 1g to a heat dissipation fin, 1h to an air pressure valve, 1i to a discharge outlet, 1j to a support frame and 1k to a heat dissipation pipe;

2 to conveying device, 2a to heat dissipation outer tube, 2b to heat dissipation fin;

3-incineration device, 3 a-combustion chamber, 3 b-booster fan, 3 c-powder dispersing pipe, 3 d-feeding cone cover, 3 e-branch pipe, 3 f-discharging cone cover, 3 g-collecting equalizing pipe and 3 h-combustion nozzle;

4-combustion-supporting air pipe and 5-combustion-supporting object pipe.

Detailed Description

In order to enable those skilled in the art to better understand the technical scheme of the present utility model, the following detailed description is provided with reference to the accompanying drawings.

The system for purifying and treating the ash of the calcium carbide furnace, which is shown in figures 1 to 4, comprises a storage tank body 1, a conveying device 2 and an incineration device 3, wherein the storage tank body 1 is connected with the incineration device 3 through the conveying device 2, the incineration device 3 is an incinerator, a powder ash combustion supply mechanism is arranged at an inlet part of a combustion chamber 3a of the incinerator, the powder ash combustion supply mechanism comprises a booster fan 3b, a powder dispersing pipe 3c, a collection equalizing pipe 3g and a combustion nozzle 3h, an air inlet end of the booster fan 3b is connected with the conveying device 2, an air outlet end of the booster fan 3b is connected with the powder dispersing pipe 3c, the powder dispersing pipe 3c is connected with the collection equalizing pipe 3g, a combustion nozzle 3h is arranged at an outlet end of the collection equalizing pipe 3g, and the collection equalizing pipe 3g and the combustion nozzle 3h are positioned in the combustion chamber 3 a; wherein, powder pipe 3c looses includes feeding awl cover 3d, ejection of compact awl cover 3f, at least two arc structure's branch pipe 3e, and the one end fixed connection feeding awl cover 3d of each branch pipe 3e, the inlet end of booster fan 3b is connected to feeding awl cover 3d, and the other end fixed connection ejection of compact awl cover 3f, ejection of compact awl cover 3f connect and collect equalizing pipe 3g, and feeding awl cover 3d, ejection of compact awl cover 3f, branch pipe 3e connect the combination and are diamond structure on ejection of compact awl cover 3f, the one end opposite to its ejection of compact direction is equipped with combustion-supporting trachea 4, combustion-supporting trachea 4 is connected with combustion-supporting thing pipe 5.

The heat-dissipating storage tank is characterized in that a feed inlet 1a is formed in the center of the top of the storage tank body 1, a heat-dissipating annular pipe 1b is arranged at the periphery of the top, the heat-dissipating annular pipe 1b and the feed inlet 1a are arranged in a concentric circle, the heat-dissipating annular pipe 1b is provided with a pipeline connected with a heat-dissipating source, a plurality of heat-dissipating pipes 1c extending to the inner lower part of the heat-dissipating pipes are arranged in the storage tank body 1 around the circumference of an axial lead, the heat-dissipating pipes 1c are U-shaped, one ends of the heat-dissipating pipes 1c penetrate through a cover body upwards to be connected with the heat-dissipating annular pipe 1b, the other ends of the heat-dissipating pipes are connected with a heat-collecting annular pipe 1d, the heat-collecting annular pipe 1d is arranged at the upper part in the storage tank body 1, a plurality of temperature sensors 1e are arranged on the inner wall of the storage tank body 1 from bottom to top, and a discharge hole 1i is formed in the bottom of the storage tank body 1.

The bottom of the storage tank body 1 is provided with a supporting frame 1j.

The discharge port 1i is of an L-shaped structure, a discharge control valve is arranged at the discharge end of the discharge port 1i, a discharge spiral 1f extending upwards to the middle and lower parts of the storage tank 1 is coaxially arranged at the bottom of a vertical pipe of the discharge port 1i, the discharge spiral 1f can break up the accumulated purified ash at the lower part of the storage tank 1, and the purified ash is prevented from caking, so that the purified ash can be discharged rapidly and smoothly, and blockage is prevented.

Radiating fins 1g are all established to the circumference on the outer wall of the holding vessel body 1, radiating fins 1g are vertical or ring form setting radiating fins 1g are all established on the cooling tube 1c, and radiating fins 1g on the cooling tube 1c sets up to be tip ascending toper structure, increase heat transfer area of contact adopts inside and outside radiating mode simultaneously, further promotes heat dissipation cooling effect, guarantees storage safety and cooling efficiency.

The top of the storage tank body 1 is provided with at least one air pressure valve 1h, an air outlet of the air pressure valve 1h is connected with a gas purifier, and when the air pressure in the storage tank body 1 is too high, the gas in the storage tank body 1 is discharged from the air pressure valve 1h and is purified by the gas purifier and then discharged; on the other hand, the air pressure valve 1h can be removed to contact with a nitrogen pipe, and nitrogen is infused into the storage tank body 1 to isolate air.

The conveying device 2 is a pipeline type screw conveyor, and the screw in the pipeline type screw conveyor is shaftless.

The conveying device is characterized in that a heat dissipation outer pipe 2a is coaxially arranged outside a conveying pipe in the conveying device 2, heat dissipation fins 2b are uniformly distributed on the outer wall of the conveying pipe in a clearance mode, a heat dissipation inlet is formed in one end of the heat dissipation outer pipe 2a, and a heat dissipation outlet is formed in the other end of the heat dissipation outer pipe.

The feeding cone cover 3d, the discharging cone cover 3f and the branch pipe 3e are arranged in an integrated structure.

The device also comprises a control device, wherein the control device is a singlechip, and is connected with the conveying device 2, the booster fan 3b, the temperature sensor 1e, the discharging control valve, the discharging spiral 1f and the gas purifier through signals.

The combustion-supporting air pipe 4 and the combustion-supporting object pipe 5 are provided with a flowmeter and a one-way valve.

The working mode of the utility model is as follows:

1. the purified ash is collected and stored, the purified ash collected by the calcium carbide furnace gas in the dry purification working section enters the storage tank 1 from the feed inlet 1a through a pipeline, as the temperature of the purified ash just collected is high, the heat conducted to the storage tank 1 and the radiating pipe 1c by the purified ash is gradually increased along with the change of the accumulation height of the purified ash in the storage tank 1, the temperature of different accumulation heights can be sensed from bottom to top by the temperature sensor 1e arranged in the storage tank 1, the control device controls the radiating source to continuously provide a low-temperature heat source for the radiating pipe 1c to exchange heat and cool the purified ash, the supply amount of the low-temperature heat source can be controlled to be increased or reduced, the radiating source after heat exchange is collected through the heat collecting ring pipe 1d and is discharged by the heat discharging pipe 1k for recycling.

2. Purifying ash for transportation; when the incineration device 3 operates, a discharge control valve at the bottom of the storage tank body 1 is opened, a discharge screw 1f operates to guide purified ash to be discharged from a discharge port 1i and enter a conveying device 2, the purified ash reaches a powder ash combustion supply mechanism of the incineration device 3 under the guidance of a shaftless screw of the conveying device 2, and the purified ash is conveyed into a combustion chamber 3a by the powder ash combustion supply mechanism to be incinerated; when the purified ash is conveyed in the conveying device 2, the low-temperature heat dissipation medium is input into the heat dissipation inlet of the heat dissipation outer tube 2a, heat conducted to the conveying tube is conducted to the low-temperature heat dissipation medium by the cloth heat dissipation fins 2b, and the heat dissipation outlet outputs the heat-exchanged high-temperature heat dissipation medium, so that the conveying safety of the purified ash is ensured.

3. Purifying ash and burning; after the purified ash reaches the outlet of the conveying device 2, the booster fan 3b operates to boost the purified ash, and then the purified ash is blown into the powder dispersing pipe 3c, the purified ash is split through each branch pipe 3e and then is collected into the collecting equalizing pipe 3g, and finally the purified ash is conveyed to the combustion nozzle 3h by the collecting equalizing pipe 3g and is sprayed into the combustion chamber 3a for incineration; in the process, in order to improve the combustion efficiency of the purified ash, air is conveyed in through a combustion-supporting air pipe 4, and the blue carbon powder is conveyed in through a combustion-supporting object pipe 5 to support combustion. The specific mode is as follows: because the purified ash moves forward and moves fast, negative pressure is formed at the rear end of the discharging cone cover 3f at the collecting position of each branch pipe 3e, air is sucked into the combustion air pipe 4 by utilizing the negative pressure and the combustion air pipe 4 to support combustion, and the air is sucked into the combustion air pipe 4 to form negative pressure for the combustion-supporting object pipe 5, so that the blue carbon powder is sucked into the combustion air pipe 4 to be mixed, then enters the discharging cone cover 3f to meet and mix with the purified ash, is stably mixed in the collecting equalizing pipe 3g and then is conveyed to the combustion nozzle 3h to be combusted, and the combusted purified ash is granular after being burnt, and has no dust in the collecting and transporting processes.

Claims

1. The utility model provides an environmental protection and energy saving's carbide stove purification ash processing system, includes holding vessel body (1), conveyor (2) and burns device (3), and holding vessel body (1) is through conveyor (2) connection incineration device (3), its characterized in that: the incinerator is characterized in that the incinerator is arranged on the combustion chamber (3 a) of the incinerator, a powder ash combustion supply mechanism is arranged at the inlet part of the combustion chamber (3 a), the powder ash combustion supply mechanism comprises a booster fan (3 b), a powder dispersing pipe (3 c), a collecting equalizing pipe (3 g) and a combustion nozzle (3 h), the air inlet end of the booster fan (3 b) is connected with the conveying device (2), the air outlet end of the booster fan is connected with the powder dispersing pipe (3 c), the powder dispersing pipe (3 c) is connected with the collecting equalizing pipe (3 g), the combustion nozzle (3 h) is arranged at the outlet end of the collecting equalizing pipe (3 g), and the collecting equalizing pipe (3 g) and the combustion nozzle (3 h) are positioned in the combustion chamber (3 a); wherein, loose powder pipe (3 c) is including feeding awl cover (3 d), ejection of compact awl cover (3 f), branch pipe (3 e) of two piece at least arc structures, and the one end fixed connection feeding awl cover (3 d) of each branch pipe (3 e), the inlet end of booster fan (3 b) is connected to feeding awl cover (3 d), and the other end fixed connection ejection of compact awl cover (3 f), and collection equalizing pipe (3 g) is connected to ejection of compact awl cover (3 f), branch pipe (3 e) are connected the combination and are diamond structure on ejection of compact awl cover (3 f), the one end opposite with its ejection of compact direction is equipped with combustion-supporting trachea (4), combustion-supporting trachea (4) are connected with combustion-supporting material pipe (5).

2. The environmentally friendly and energy-saving calcium carbide furnace ash purifying treatment system according to claim 1, wherein: the heat-collecting tank is characterized in that a feed inlet (1 a) is formed in the center of the top of the storage tank body (1), a heat-dissipating ring pipe (1 b) is arranged at the periphery of the top, the heat-dissipating ring pipe (1 b) and the feed inlet (1 a) are arranged in a concentric circle, the heat-dissipating ring pipe (1 b) is provided with a pipeline connected with a heat-dissipating source, a plurality of heat-dissipating pipes (1 c) extending to the inner lower part of the heat-dissipating ring pipe are arranged in the storage tank body (1) around the circumference of an axial lead, the heat-dissipating pipes (1 c) are in a U-shaped structure, one end of each heat-dissipating pipe (1 c) upwards penetrates through a cover body to be connected with the heat-dissipating ring pipe (1 b), the other end of each heat-dissipating pipe is connected with a heat-collecting ring pipe (1 d), the heat-collecting ring pipe (1 d) is arranged at the inner upper part of the storage tank body (1), a plurality of temperature sensors (1 e) are arranged on the inner wall of the storage tank body (1) from bottom to top, and a discharge port (1 i) is formed in the bottom of the storage tank body (1).

3. The environmental protection and energy saving carbide furnace purification ash treatment system according to claim 2, characterized in that: the discharge port (1 i) is of an L-shaped structure, a discharge control valve is arranged at the discharge end of the discharge port (1 i), and a discharge screw (1 f) extending upwards to the middle lower part of the storage tank body (1) is coaxially arranged at the bottom of the vertical pipe of the discharge port (1 i).

4. The environmental protection and energy saving carbide furnace purification ash treatment system according to claim 2, characterized in that: radiating fins (1 g) are arranged on the circumference of the outer wall of the storage tank body (1), the radiating fins (1 g) are arranged longitudinally or circularly, the radiating fins (1 g) are arranged on the radiating pipe (1 c), and the radiating fins (1 g) on the radiating pipe (1 c) are arranged to be of a conical structure with an upward tip.

5. The environmental protection and energy saving carbide furnace purification ash treatment system according to claim 2, characterized in that: the top of the storage tank body (1) is provided with at least one air pressure valve (1 h), and an air outlet of the air pressure valve (1 h) is connected with a gas purifier.

6. The environmentally friendly and energy-saving calcium carbide furnace ash purifying treatment system according to claim 1, wherein: the conveying device (2) is a pipeline type screw conveyor, and the screw in the pipeline type screw conveyor is shaftless.

7. The environmentally friendly and energy-saving calcium carbide furnace ash purifying treatment system according to claim 6, wherein: the conveying device is characterized in that a heat dissipation outer pipe (2 a) is coaxially arranged outside a conveying pipe in the conveying device (2), the heat dissipation outer pipe and the heat dissipation outer pipe are arranged in a clearance mode, and heat dissipation fins (2 b) are uniformly distributed on the outer wall of the conveying pipe.

8. The environmentally friendly and energy-saving calcium carbide furnace ash purifying treatment system according to claim 1, wherein: the feeding cone cover (3 d), the discharging cone cover (3 f) and the branch pipes (3 e) are arranged in an integrated structure.

9. The environmentally friendly and energy-saving calcium carbide furnace ash purifying treatment system according to claim 1, wherein: the device also comprises a control device, wherein the control device is a singlechip, and is connected with the conveying device (2), the booster fan (3 b), the temperature sensor (1 e), the discharging control valve, the discharging screw (1 f) and the gas purifier through signals.