A high-sulfur element waste incineration disposal device

Abstract

The utility model discloses a kind of high sulfur element waste's incineration disposal device, including incinerator, boiler, filter bag room, flue gas scrubber and chimney. Incinerator includes furnace bottom and the two ends of furnace bottom are connected with one combustion chamber and two combustion chambers;Furnace bottom is provided with ash removal device;The top of one combustion chamber is equipped with main burner, the upper portion of one combustion chamber is installed with upper lime milk spray gun and waste spray gun, and the import of this waste spray gun is connected with the export of waste storage tank;The lower portion of two combustion chambers is installed with natural gas spray gun and lower lime milk spray gun, and the lower portion of two combustion chambers is provided with secondary air import;The top of two combustion chambers is provided with flue gas outlet;The flue gas import of boiler is connected with the flue gas outlet of two combustion chambers;The upper portion of boiler is connected with SNCR deactivation device;Filter bag room is connected with the flue gas outlet of boiler;Flue gas scrubber is connected with filter bag room;The flue gas scrubber is connected with sodium hydroxide solution storage tank;Chimney is connected with flue gas scrubber.The utility model can ensure that all high sulfur element waste is fully incinerated and decomposed.

Description

Technical Field

[0001] This utility model relates to an incineration treatment device for high-sulfur waste. Background Technology

[0002] Currently, incineration is widely used as a waste disposal method due to its excellent treatment effect and waste reduction capacity, playing a significant role in the environmental protection field. The most commonly used incineration equipment is a rotary kiln with a secondary combustion chamber, followed by flue gas purification equipment to ensure that the exhaust gas generated during incineration meets emission standards.

[0003] However, with increasingly stringent environmental regulations, the levels of harmful elements in waste are increasing year by year, making it more difficult for existing incineration equipment to handle the waste. Long-term operation will increase equipment wear and tear, complicate daily incineration operations, and pose a risk of exceeding emission standards. At the same time, some elements have certain utilization value, and traditional fly ash landfilling results in resource waste. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide an incineration device for high-sulfur waste, which can ensure that all high-sulfur waste is fully incinerated and decomposed.

[0005] The purpose of this utility model is achieved as follows: a device for incinerating high-sulfur waste includes an incinerator, a boiler, a filter bag room, a flue gas scrubbing tower, and a chimney; wherein,

[0006] The incinerator has a U-shaped structure and includes a furnace bottom and a primary combustion chamber and a secondary combustion chamber connected to the two ends of the furnace bottom respectively. The furnace bottom is equipped with an ash removal device. The top of the primary combustion chamber is equipped with a main burner, and a lime slurry spray gun and a waste spray gun are installed on the upper part of the primary combustion chamber. The inlet of the waste spray gun is connected to the outlet of the waste storage tank. The lower part of the secondary combustion chamber is equipped with a natural gas spray gun and a lower lime slurry spray gun, and a secondary air inlet is opened at the lower part of the secondary combustion chamber. The top of the secondary combustion chamber is equipped with a flue gas outlet.

[0007] The flue gas inlet of the boiler is connected to the flue gas outlet of the secondary combustion chamber via a flue gas duct; an SNCR denitrification device is connected to the upper part of the boiler.

[0008] The filter bag room is connected to the flue gas outlet of the boiler via a flue gas duct;

[0009] The flue gas scrubbing tower is connected to the filter bag room via a flue gas pipeline; the flue gas scrubbing tower is also connected to a sodium hydroxide solution storage tank.

[0010] The chimney is connected to the flue gas scrubbing tower via a flue gas duct.

[0011] In the aforementioned incineration treatment device for high-sulfur waste, the inlet of the upper lime slurry spray gun and the inlet of the lower lime slurry spray gun are both connected to the outlet of the lime slurry preparation tank.

[0012] In the aforementioned incineration treatment device for high-sulfur waste, the bottom of the boiler and the bottom of the bag filter room are each equipped with an ash discharge device.

[0013] In the aforementioned incineration treatment device for high-sulfur waste, a fan is provided between the flue gas scrubbing tower and the chimney.

[0014] The features of this utility model's incineration treatment device for high-sulfur element waste are: it adopts a U-shaped incinerator, so that the sulfur dioxide gas produced after the high-sulfur element waste is burned in the primary combustion chamber reacts with lime to form fixed salts, which fall directly to the bottom of the furnace and are discharged by the ash removal device at the bottom of the furnace; the gas that is not completely burned in the primary combustion chamber then enters the secondary combustion chamber to be fully burned with lime, ensuring that all high-sulfur element waste is fully burned and gas-solid separated, and the solids produced by incineration can be collected for further refining, realizing the resource utilization of the elements. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structural principle of the incineration treatment device for high-sulfur waste of this utility model. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Please see Figure 1 The incineration treatment device for high-sulfur waste of this utility model includes a waste storage tank 1, a lime slurry preparation tank 2, an incinerator 3, a boiler 4, a filter bag room 5, a flue gas scrubbing tower 6, and a chimney 7.

[0018] The incinerator 3 has a U-shaped structure and includes a furnace bottom and a primary combustion chamber 3A and a secondary combustion chamber 3B connected to the two ends of the furnace bottom respectively. The furnace bottom is equipped with an ash removal device 30. The top of the primary combustion chamber 3A is equipped with a main burner 31. The upper part of the primary combustion chamber 3A is equipped with a lime slurry spray gun 32 and a waste spray gun 33. The inlet of the waste spray gun 33 is connected to the outlet of the waste storage tank 1. The lower part of the secondary combustion chamber 3B is equipped with a natural gas spray gun 34 and a lower lime slurry spray gun 35. A secondary air inlet 36 is opened at the lower part of the secondary combustion chamber 3B. The top of the secondary combustion chamber 3B is equipped with a flue gas outlet.

[0019] The inlet of the lime slurry preparation tank 2 is connected to the outlet of the lime storage tank 20, and the outlet of the lime slurry preparation tank 2 is connected to the inlet of the upper lime slurry spray gun 32 and the inlet of the lower lime slurry spray gun 35, respectively.

[0020] The flue gas inlet of boiler 4 is connected to the flue gas outlet of secondary combustion chamber 3B through a flue gas pipe; the upper part of boiler 4 is connected to SNCR denitrification device 40, which uses urea or ammonia water as raw material; the bottom of boiler 4 is equipped with an ash removal device.

[0021] The filter bag chamber 5 is connected to the flue gas outlet of the boiler 4 via a flue gas duct; the bottom of the filter bag chamber 5 is equipped with an ash discharge device.

[0022] The flue gas inlet of the flue gas scrubbing tower 6 is connected to the flue gas outlet of the filter bag room 5, and the flue gas scrubbing tower 6 is connected to the sodium hydroxide solution storage tank 60.

[0023] The flue gas inlet of chimney 7 is connected to the flue gas outlet of flue gas scrubbing tower 6 through a flue gas duct equipped with fan 6A.

[0024] This invention relates to an incineration device for high-sulfur waste. The main burner 31 of the incinerator 3 uses natural gas as fuel. Natural gas is injected into the incinerator 3 through a natural gas spray gun 34 and then burned in the main burner 31. Once the main burner 31 reaches the predetermined incineration conditions, the high-sulfur waste stored in the waste storage tank 1 is injected into the primary combustion chamber 31 of the incinerator 3 through a waste spray gun 33. Simultaneously, lime slurry is injected through an upper lime slurry spray gun 32, causing the high-sulfur waste and lime slurry to burn simultaneously. The resulting acidic gases are immediately absorbed by the lime. The jet flow rate of the natural gas spray gun 34 in the secondary combustion chamber 32 and the air intake rate of the secondary air inlet 36 are controlled to maintain the outlet flue gas temperature of the incinerator 3 at 1100°C. The amount of lime slurry added to the secondary combustion chamber 32 is adjusted through a lower lime slurry spray gun 35 based on the pH value in the flue gas scrubbing tower 6 and the amount of sodium hydroxide solution added. The flue gas generated by incinerator 3 enters boiler 4 through the flue gas outlet at the top of secondary combustion chamber 3B. It first passes through SNCR denitrification device 40 to reduce NOx (nitrogen oxides). After heat exchange with boiler water, steam is generated. The cooled flue gas then enters bag filter chamber 5, where fly ash is trapped. It then enters flue gas scrubbing tower 6. Flue gas scrubbing tower 6 uses alkaline absorbent (calcium hydroxide solution) to chemically react with sulfur dioxide in the flue gas, absorbing and converting it into sulfates, thereby removing acidic substances from the flue gas. Finally, it is discharged into the atmosphere through chimney 7. High-sulfur waste and salts formed after lime combustion are discharged through ash removal device 30 at the bottom of the furnace. The ash collected through the ash removal devices at the bottom of boiler 4 and bag filter chamber 5 can be further refined, realizing the resource utilization of elements.

[0025] The above embodiments are for illustrative purposes only and are not intended to limit the present invention. Those skilled in the art can make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should also fall within the scope of the present invention and should be defined by the claims.

Claims

1. A device for incinerating high-sulfur waste, comprising an incinerator, a boiler, a filter bag room, a flue gas scrubbing tower, and a chimney; characterized in that, The incinerator has a U-shaped structure and includes a furnace bottom and a primary combustion chamber and a secondary combustion chamber connected to the two ends of the furnace bottom respectively. The furnace bottom is equipped with an ash removal device. The top of the primary combustion chamber is equipped with a main burner, and a lime slurry spray gun and a waste spray gun are installed on the upper part of the primary combustion chamber. The inlet of the waste spray gun is connected to the outlet of the waste storage tank. The lower part of the secondary combustion chamber is equipped with a natural gas spray gun and a lower lime slurry spray gun, and a secondary air inlet is opened at the lower part of the secondary combustion chamber. The top of the secondary combustion chamber is equipped with a flue gas outlet. The flue gas inlet of the boiler is connected to the flue gas outlet of the secondary combustion chamber via a flue gas duct; an SNCR denitrification device is connected to the upper part of the boiler. The filter bag room is connected to the flue gas outlet of the boiler via a flue gas duct; The flue gas scrubbing tower is connected to the filter bag room via a flue gas pipeline; the flue gas scrubbing tower is also connected to a sodium hydroxide solution storage tank. The chimney is connected to the flue gas scrubbing tower via a flue gas duct.

2. The incineration treatment device for high-sulfur waste according to claim 1, characterized in that, The inlet of both the upper and lower lime slurry spray guns is connected to the outlet of the lime slurry preparation tank.

3. The incineration treatment device for high-sulfur waste according to claim 1, characterized in that, The bottom of the boiler and the bottom of the bag filter room are each equipped with an ash discharge device.

4. The incineration treatment device for high-sulfur waste according to claim 1, characterized in that, A fan is installed between the flue gas scrubbing tower and the chimney.

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