Ash water recycling device for semi-waste boiler gasification furnace

Abstract

The utility model discloses a grey water recycling device for a semi-waste boiler gasification furnace. The grey water recycling device mainly comprises a combustion chamber, a waste boiler section, a chilling section, an atomizing nozzle, a spraying ring, a stop valve, a regulating valve, a flow meter and a precision filter. The device is characterized in that the combustion chamber is located at the upper part of the semi-waste boiler gasification furnace cavity, the waste boiler section is located below the combustion chamber, the chilling section is located below the waste boiler section, the atomizing nozzle is located in the left cavity of the semi-waste boiler gasification furnace at the joint of the combustion chamber and the waste boiler section, and the spraying ring is located in the right cavity of the semi-waste boiler gasification furnace at the joint of the combustion chamber and the waste boiler section; the stop valve is located at the end, close to the semi-waste boiler gasification furnace, of the external grey water pipeline of the semi-waste boiler gasification furnace, the adjusting valve is located on the right side of the stop valve of the external grey water pipeline of the semi-waste boiler gasification furnace, the flowmeter is located on the right side of the adjusting valve of the external grey water pipeline of the semi-waste boiler gasification furnace, and the precision filter is located on the right side of the flowmeter of the external grey water pipeline of the semi-waste boiler gasification furnace.

Description

Technical Field

[0001] This invention relates to the field of semi-waste boiler dry coal gasification technology, and directly relates to a device for reusing ash water from a semi-waste boiler gasifier. Background Technology

[0002] Since the application of dry pulverized coal semi-waste boiler gasification technology, the steam produced as a byproduct of the dry pulverized coal semi-waste boiler has generated significant economic benefits and greatly improved energy utilization. However, due to the influence of coal quality, the amount of ash water discharged from the gasification system is large, and the discharged ash water has high COD and ammonia nitrogen levels, which increases both water resource waste and wastewater treatment costs. Therefore, it is urgent to study a device for reusing ash water from a semi-waste boiler gasifier. Utility Model Content

[0003] The purpose of this invention is to address the technical challenges of large external drainage volume and high wastewater treatment costs associated with semi-waste boiler gasifiers by developing a device for reusing ash water from semi-waste boiler gasifiers.

[0004] The purpose of this utility model is achieved as follows:

[0005] A semi-waste boiler gasifier ash water reuse device mainly includes: 1. a combustion chamber, 2. a waste boiler section, 3. a quench section, 4. an atomizing nozzle, 5. a spray ring, 6. a shut-off valve, 7. a regulating valve, 8. a flow meter, and 9. a precision filter. The combustion chamber 1 is located at the upper part of the semi-waste boiler gasifier cavity, the waste boiler section 2 is located below the combustion chamber 1, the quench section 3 is located below the waste boiler section 2, the atomizing nozzle 4 is located inside the left cavity of the semi-waste boiler gasifier at the connection between the combustion chamber 1 and the waste boiler section 2, the spray ring 5 is located inside the right cavity of the semi-waste boiler gasifier at the connection between the combustion chamber 1 and the waste boiler section 2, the shut-off valve 6 is located near the end of the external ash water pipeline of the semi-waste boiler gasifier, the regulating valve 7 is located to the right of the shut-off valve 6 on the external ash water pipeline of the semi-waste boiler gasifier, the flow meter 8 is located to the right of the regulating valve 7 on the external ash water pipeline of the semi-waste boiler gasifier, and the precision filter 9 is located to the right of the flow meter 8 on the external ash water pipeline of the semi-waste boiler gasifier.

[0006] Its features are as follows: After being filtered by a precision filter, the system ash water enters the spray ring 5 under the regulation of the regulating valve 7. The lower part of the spray ring 5 is equipped with a specially designed atomizing nozzle 4. The ash water uniformly cools the syngas from the combustion chamber 1 through the atomizing nozzle 4. At the same time, a large amount of molten ash slag carried in the syngas will be rapidly cooled and solidified after encountering the ash water, so that its temperature drops below the melting point, thus constraining the ash slag and preventing the molten slag from adhering to the furnace wall tube bundle of the waste boiler section 2. The system ash water reacts with the syngas inside the waste boiler, reducing the amount of ash water in the system.

[0007] The beneficial effects of this utility model are: by using the melt cooling method, the molten slag is rapidly cooled and solidified, solving the problem of molten slag easily adhering to the furnace wall; and the stable steam production from the waste boiler is achieved. Its significant features are: simple structure and process, low investment, and convenient operation. Attached Figure Description

[0008] Appendix Figure 1 The diagram shows the structure of a device for reusing ash water from a semi-waste boiler gasifier according to the present invention.

[0009] Figure 1 Explanation of the winning bid numbers: 1. Combustion chamber, 2. Waste boiler section, 3. Quenching section, 4. Atomizing nozzle, 5. Spray ring, 6. Shut-off valve, 7. Regulating valve, 8. Flow meter, 9. Precision filter. Detailed Implementation

[0010] The following is in conjunction with the appendix Figure 1 This invention provides a further description of a device for reusing ash and water from a semi-waste boiler gasifier.

[0011] The ash water is filtered through a precision filter 9 (with two channels that can be switched online for cleaning) and enters the spray ring 5 under the regulation of the regulating valve 7. A special atomizing nozzle 4 is provided at the lower part of the spray ring 5. Cooling water enters the waste boiler section 2 through the atomizing nozzle 4 and reacts with the high-temperature syngas to digest the ash water. At the same time, the ash water and liquid slag are rapidly solidified, which inhibits the decline of steam production from the waste boiler.

Claims

1. A device for reusing ash water from a semi-waste boiler gasifier, mainly comprising: The combustion chamber (1), waste boiler section (2), quench section (3), atomizing nozzle (4), spray ring (5), shut-off valve (6), regulating valve (7), flow meter (8), and precision filter (9) are characterized in that: the combustion chamber (1) is located at the upper part of the semi-waste boiler gasifier cavity, the waste boiler section (2) is located below the combustion chamber (1), the quench section (3) is located below the waste boiler section (2), and the atomizing nozzle (4) is located at the left side cavity of the semi-waste boiler gasifier at the connection between the combustion chamber (1) and the waste boiler section (2). Inside the body, the spray ring (5) is located at the connection between the combustion chamber (1) and the waste boiler section (2) inside the right cavity of the semi-waste boiler gasifier. The shut-off valve (6) is located near the end of the external ash water pipeline of the semi-waste boiler gasifier. The regulating valve (7) is located to the right of the shut-off valve (6) of the external ash water pipeline of the semi-waste boiler gasifier. The flow meter (8) is located to the right of the regulating valve (7) of the external ash water pipeline of the semi-waste boiler gasifier. The precision filter (9) is located to the right of the flow meter (8) of the external ash water pipeline of the semi-waste boiler gasifier.

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