CN212319749U - Dangerous useless rotary kiln burns dry ash slag discharging equipment - Google Patents

Abstract

The invention discloses a hazardous waste rotary kiln dry ash incineration slag discharging device which comprises a rotary kiln and a secondary combustion chamber, wherein an ash falling channel is arranged at the tail end below the secondary combustion chamber, spiral ash feeding machines are arranged on two sides of the ash falling channel, one end of each spiral ash feeding machine is arranged in the ash falling channel, the other end of each spiral ash feeding machine is arranged in an ash storage bin and used for conveying old ash in the ash storage bin into the ash falling channel, the old ash falls to the bottom of the ash falling channel to form an ash storage layer, a gate valve is arranged at the outlet of the bottom of the ash falling channel, and a scraper conveyor is arranged below the gate valve. According to the invention, the spiral ash feeding machines on the two sides of the ash discharging channel are in interlocking control with the gate valve, so that the slag is fully cooled when being suspended on the old ash, the dry ash discharging of the slag is realized, the volume weight and the volume of the slag are reduced, and the operation cost of an enterprise is reduced; meanwhile, the ash discharging system does not produce sewage, and reduces pollution.

Description

Dangerous useless rotary kiln burns dry ash slag discharging equipment

Technical Field

The invention relates to a hazardous waste rotary kiln dry ash incineration slag discharging device, and belongs to the technical field of energy conservation and environmental protection.

Background

The high temperature residue that material burned the production through high temperature in the rotary kiln in the hazardous waste incinerator project, conventional process is supporting water seal slagging tap water and comes the rapid cooling lime-ash, lime-ash moisture content is up to 50-60%, the landfill volume in addition, weight is big, and the moisture content height can produce sewage, the production running cost is high, consequently need for a section can be used to hazardous waste burns dry ash slag discharging equipment, greatly reduces outward transport landfill volume, alleviate enterprise's running cost's equipment.

Disclosure of Invention

In order to meet the pollution control standard requirement when the hazardous waste is incinerated and bring pollution reduction and operation cost reduction for enterprises, the invention provides the hazardous waste incineration dry ash slag discharging equipment.

The technical scheme adopted by the invention is as follows: the utility model provides a useless rotary kiln of danger burns dry ash slag discharging equipment, includes rotary kiln and afterburner, afterbody below of afterburner is equipped with the ash passageway that falls, the ash passageway both sides that fall are equipped with the spiral and give the ash machine, the spiral is given ash machine one end and is located in the ash passageway that falls, and in the ash storehouse was located to the other end, it was used for carrying the old ash in the ash storehouse to the ash passageway that falls in and old ash falls to the bottom formation of ash passageway that falls, the bottom exit of ash passageway that falls is equipped with the push-pull valve to be equipped with scraper conveyor in the below of push-pull valve.

Further, the push-pull valve includes pneumatic cylinder, heat-resisting steel valve plate and heat-resisting steel track, heat-resisting steel valve plate slidable locates on the heat-resisting steel track to the heat-resisting steel valve plate is connected with the flexible end of pneumatic cylinder, and then drives the heat-resisting steel valve plate and open and shut the action through the drive of pneumatic cylinder, the pneumatic cylinder is connected with the hydraulic pressure station simultaneously, provides the energy of pneumatic cylinder by the hydraulic pressure station.

Furthermore, the two ash bins are respectively an ash bin A and an ash bin B, the ash bin A and the ash bin B are arranged on two sides of the ash falling channel and are arranged in different heights, a spiral ash feeding machine A is arranged in the ash bin A, and a spiral ash feeding machine B is arranged in the ash bin B.

Furthermore, a cooling water inlet and a cooling water outlet are formed in the conveying section of the spiral ash feeding machine, so that a water cooling structure of the spiral ash feeding machine is formed.

Furthermore, the water cooling structure and the helical blades of the spiral ash feeder are made of heat-resistant steel materials. Because the position of the equipment is a high-temperature area, although old ash is arranged between the screws to protect the blades, part of the blades are still exposed in the high-temperature area, the blades are made of 2520 heat-resistant steel, the high-temperature resistance and corrosion resistance are strong, and meanwhile, the screw machine adopts a water jacket structure, so that the service lives of the screw blades and the shell are further ensured.

Further, the scraper conveyor is a sealed scraper conveyor. Preferably, the original slag extractor can be used for transformation, and the slag extractor mainly comprises a transmission mechanism, a chain, a transmission shaft, a box body and the like and is used for ensuring the conveying of ash slag.

Further, the slag outlet of the scraper conveyor is provided with a combined weight valve for ensuring the sealing of the ash discharging system.

Furthermore, the combined weight valve consists of a weight valve A and a weight valve B, and the two weight valves are sequentially arranged up and down and are interlocked with the gate valve to ensure the sealing of the ash discharging system.

The invention has the beneficial effects that: the device adopts the principle of filling old ash to block the high-temperature heat transfer of the new ash, can increase the pause time of the new ash and is also beneficial to reducing the thermal ignition loss rate of the ash slag, and the slag (new ash) pauses on the old ash to be fully cooled by performing chain control on the ash feeding machine and the gate valve through the screws at the two sides of the ash discharging channel, so that the dry ash discharging of the slag (new ash) is realized, the volume weight and the volume of the slag (new ash) are reduced, and the operation cost of an enterprise is reduced; meanwhile, the ash discharge system of the method does not produce sewage, thereby reducing 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 front view of the present invention.

Fig. 2 is a side view of the present invention.

Labeled as: 1-a secondary combustion chamber, 2-a rotary kiln, 3-an ash storage bin A, 4-old ash, 5-a spiral ash feeder A, 6-an ash storage layer, 7-an ash storage bin B, 8-a spiral ash feeder B, 9-new ash, 10-an ash falling channel, 11-a gate valve, 12-a hydraulic cylinder, 13-a hydraulic station, 14-a cooling water inlet and outlet of the spiral ash feeder, 15-a gate valve track, 16-a scraper conveyor, 17-a heavy hammer valve A, 18-a heavy hammer valve B and 19-an ash box.

Detailed Description

The invention is described in detail below with reference to the figures and specific embodiments.

As shown in figures 1 and 2, the hazardous waste rotary kiln dry ash incineration slag discharging equipment comprises a rotary kiln 2 and a secondary combustion chamber 1, wherein an ash falling channel 10 is arranged at the tail end of the lower part of a furnace body of the secondary combustion chamber 1, two sides of the ash falling channel 10 are provided with a spiral ash feeding machine, one end of the spiral ash feeding machine is arranged in the ash falling channel 10, the other end of the spiral ash feeding machine is arranged in an ash storehouse, the spiral ash feeding machine is used for conveying the old ash in the ash storehouse to the ash falling channel 10, the old ash falls to the bottom of the ash falling channel 10 to form an ash layer 6, a gate valve 11 is arranged at the outlet of the bottom of the ash falling channel 10, and a scraper conveyor 16 is arranged below the gate valve 11.

In this embodiment, the gate valve 11 includes a hydraulic cylinder 12, a heat-resistant steel valve plate and a heat-resistant steel track 15, the heat-resistant steel valve plate is slidably disposed on the heat-resistant steel track 15, and the heat-resistant steel valve plate is connected with the flexible end of the hydraulic cylinder 11, and further drives the heat-resistant steel valve plate to open and close by the drive of the hydraulic cylinder 11, the hydraulic cylinder 12 is connected with the hydraulic station 13 at the same time, and the hydraulic station 13 provides the energy of the hydraulic cylinder 12.

In this embodiment, two ash bins are provided, namely an ash bin A3 and an ash bin B7, the ash bins are pre-filled by utilizing the ash in the ash bin or the new ash coming from the ash bin to screen and screen the part of the ash to be recycled, the ash bin A3 and the ash bin B7 are arranged on two sides of the ash falling channel 10 and are arranged in different heights, a spiral ash feeder a5 is arranged in the ash bin A3, and a spiral ash feeder B8 is arranged in the ash bin B7. And a cooling water inlet and outlet 14 is formed in the conveying section of the spiral ash feeder to form a water cooling structure of the spiral ash feeder. The water cooling structure and the helical blade of the spiral ash feeder are made of heat-resistant steel.

In this embodiment, the new ash 9 burned at high temperature in the secondary combustion chamber 1 and the rotary kiln 2 falls on the surface of the ash layer 6 through the ash falling channel 10, and then the gate valve 11 is opened to drop part of the ash through a material level signal or at regular time, then the gate valve is closed, the dropped ash is discharged to the weight valve a17 through the scraper conveyor 16, and the dropped ash falls and closes the weight valve a17 when the weight reaches the counter weight, and the ash falls to the weight valve B18 and falls into the ash box 19 after reaching the counter weight. Wherein, the weight valve A and the weight valve B form a combined weight valve, and the two weight valves are arranged up and down in sequence and are interlocked with the gate valve 11 to ensure the sealing of the ash discharging system.

In this embodiment, when the hydraulic gate valve 11 is opened, the ash falling is completed after a certain time delay, the hydraulic gate valve 11 can be closed, the spiral ash feeder 8 is simultaneously opened to supplement the old ash into the channel, the ash falling state can be seen in the figure, when the hydraulic gate valve 11 is closed to be in place, the spiral feeder 5 is started (the spiral feeder is simultaneously stopped) to supplement the old ash into the channel, and the spiral ash feeder can be closed after the old ash layer 6 is in place.

The working principle and the process of the invention are as follows: the method comprises the following steps that new ash 9 generated after the hazardous waste is incinerated by a rotary kiln falls to an ash layer 6 on a gate valve 11 through an ash falling channel 10, the new ash 9 is cooled and incinerated after staying on the ash layer 6 for a certain time, the gate valve 11 is started to fall part of ash through a material level signal or according to time timing, then the gate valve is closed, the ash is discharged to a weight valve 17 through a scraper conveyor 16, the weight valve 17 falls off and is closed when the weight reaches a counter weight, the ash falls to the weight valve 18, falls into an ash box 19 after reaching the counter weight, then is conveyed to an ash storage room to be stored, and is sent to be buried outside periodically.

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 methods fall within the scope of the present invention.

The parts not involved in the present invention are the same as or can be implemented using the prior art.

Claims (8)

1. The utility model provides a useless rotary kiln of danger burns dry ash slag discharging equipment, includes rotary kiln and afterburner, its characterized in that, the below tail end of afterburner is equipped with the ash passageway that falls, the ash passageway both sides that fall are equipped with the spiral and give grey machine, the spiral is given grey machine one end and is located in the ash passageway that falls, and in the storehouse of old ash was located to the other end, it was used for carrying the old ash in the storehouse of old ash to the ash passageway that falls in and old ash falls to the bottom formation old ash layer of ash passageway that falls, the bottom exit of ash passageway that falls is equipped with the push-pull valve to be equipped with scraper conveyor in the below of push-pull valve.

2. The incineration dry ash slag discharging equipment of the hazardous waste rotary kiln according to claim 1, wherein the gate valve comprises a hydraulic cylinder, a heat-resistant steel valve plate and a heat-resistant steel track, the heat-resistant steel valve plate is slidably arranged on the heat-resistant steel track, the heat-resistant steel valve plate is connected with a telescopic end of the hydraulic cylinder, the heat-resistant steel valve plate is driven by the hydraulic cylinder to be opened and closed, the hydraulic cylinder is simultaneously connected with the hydraulic station, and the hydraulic station provides energy for the hydraulic cylinder.

3. The hazardous waste rotary kiln dry ash incineration slag discharging equipment as claimed in claim 1, wherein the two ash bins are an ash bin A and an ash bin B, the ash bin A and the ash bin B are arranged on two sides of the ash falling channel and are arranged in different heights, a spiral ash feeder A is arranged in the ash bin A, and a spiral ash feeder B is arranged in the ash bin B.

4. The dry ash incineration and slag discharge equipment of the hazardous waste rotary kiln according to claim 1 or 3, wherein a cooling water inlet and outlet is formed in a conveying section of the spiral ash feeder to form a water cooling structure of the spiral ash feeder.

5. The dry ash incineration and slag discharge equipment of the hazardous waste rotary kiln according to claim 4, wherein the water cooling structure and the helical blades of the helical ash feeder are made of heat-resistant steel.

6. The dry ash incineration and slag discharging equipment for the hazardous waste rotary kiln according to claim 1, wherein the scraper conveyor is a sealed scraper conveyor.

7. The dry ash incineration and slag tapping equipment for the hazardous waste rotary kiln as claimed in claim 1 or 6, wherein the slag tapping hole of the scraper conveyor is provided with a combined weight valve for ensuring the sealing of the ash tapping system.

8. The dry ash incineration and slag discharging equipment of the hazardous waste rotary kiln as claimed in claim 7, wherein the combined weight valve is composed of a weight valve A and a weight valve B, and the two weight valves are arranged in sequence from top to bottom and interlocked with the gate valve to ensure the sealing of the ash discharging system.

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