Compressed air pipeline distribution system in glass flue gas treatment system

Abstract

The utility model discloses a compressed air pipeline distribution system in a glass flue gas treatment system, which comprises an air compressor and a plurality of compressed air storage tanks, and the air compressor conveys compressed air to each compressed air storage tank through a dryer. The compressed air storage tanks are respectively connected with an instrument air pipeline, a denitration air pipeline and a dust removal back flushing air pipeline, and outlets of the two compressed air storage tanks connected with the instrument air pipeline and the dust removal back flushing air pipeline are respectively provided with a pressure reducing valve or a pneumatic control valve; the dust removal blowback gas pipeline is also respectively connected with the ash silo fluidization system, the flue blowing system and the dust remover blowback system through branch pipes, and the front ends of the branch pipes of the dust removal blowback gas pipeline connected with the dust remover blowback system are respectively provided with a pressure reducing valve or a pneumatic control valve. According to the utility model, the conveying pressure of different pipelines is adjusted, the pipeline arrangement is optimized, the influence of gas consumption fluctuation is avoided, and the resource waste caused by high-pressure gas consumption is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of compressed air pipeline distribution systems in glass flue gas treatment system. BACKGROUND

[0002] The compressed air pipeline system of environmental protection flue gas treatment, wherein compressed air is mainly provided for instrument gas, denitration purge gas, flue blowing gas, ash storage fluidization gas and dust remover back flushing gas.

[0003] However, in the operation of the environmental protection system, the actual "compressed air" usage of each device is not reasonably distributed in the original design, such as small instrument gas usage, intermittent denitration purge, different usage of denitration tower, flue blowing and dust back flushing, and the pressure of all gas using units in the original system is maintained at a high pressure of 0.65 MPa without reasonable distribution, resulting in resource waste and high production cost. INVENTION CONTENTS

[0004] The utility model aims at overcoming the deficiencies of the prior art and providing a compressed air pipeline distribution system in a glass flue gas treatment system.

[0005] The utility model solves the technical problems by adopting the following technical scheme:

[0006] A compressed air pipeline distribution system in a glass flue gas treatment system includes an air compressor and multiple compressed air storage tanks. The air compressor delivers compressed air to each compressed air storage tank through a dryer. The compressed air storage tanks are respectively connected to an instrument gas pipeline, a denitration gas pipeline and a dust back flushing gas pipeline. Two compressed air storage tanks connected to the instrument gas pipeline and the dust back flushing gas pipeline are respectively provided with pressure reducing valves or pneumatic regulating valves at their outlets. The dust back flushing gas pipeline is further connected to an ash storage fluidization system, a flue blowing system and a dust remover back flushing system through branch pipes. The branch pipes connected to the dust remover back flushing system are respectively provided with pressure reducing valves or pneumatic regulating valves at their front ends.

[0007] In another preferred embodiment, the delivery pressure of the air compressor outlet is 0.65 MPa, the delivery pressure of the instrument gas pipeline is 0.4 MPa, the delivery pressure of the dust back flushing gas pipeline is 0.55 MPa, and the delivery pressure of the branch pipe of the dust remover back flushing system is 0.5 MPa.

[0008] The utility model has the advantages of adjusting the delivery pressure of different pipelines, optimizing pipeline layout, avoiding the influence of gas fluctuation, improving the stability of the environmental protection flue gas system, avoiding resource waste caused by high pressure gas, and bringing economic benefits to enterprises.

[0009] The utility model makes further detailed description below combining with the drawings and examples; but the compressed air pipeline distribution system in a glass flue gas treatment system of the utility model is not limited to the examples. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is the structure schematic diagram of a preferable embodiment of the utility model. DETAILED DESCRIPTION

[0011] Example, see Figure 1 The compressed air pipeline distribution system in a glass flue gas treatment system of the utility model includes air compressor 1 and multiple compressed air storage tanks, air compressor 1 is transported compressed air to each compressed air storage tank through drying machine 2, compressed air storage tank is connected instrument gas pipeline, desorption gas pipeline and dust removal back flushing gas pipeline respectively, compressed air storage tank is respectively: desorption gas storage tank 3, dust removal back flushing gas storage tank 4 and instrument gas storage tank 5, wherein the outlet of dust removal back flushing gas storage tank 4 and instrument gas storage tank 5 connected with instrument gas pipeline and dust removal back flushing gas pipeline is respectively equipped with pressure reducing valve 6 or pneumatic regulating valve, dust removal back flushing gas pipeline is also connected ash silo fluidization system, flue injection system and dust remover back flushing system through branch pipe respectively, and the front end of the branch pipe of dust removal back flushing gas pipeline connected with dust remover back flushing system is also respectively equipped with pressure reducing valve 6 or pneumatic regulating valve.

[0012] The design process of this example is as follows:

[0013] According to the calculation formula:

[0014]

[0015] It is concluded that the uniform compressed air pressure causes the system to consider the pressure of the highest gas equipment, that is P 绝压 The pressure is higher, V 流速 Under high pressure, the higher the flow rate (HG / T20570.06 compressed air recommended flow rate) is selected, so Q 流量 It is the highest value.

[0016] According to the above calculation, the system runs in the highest pressure state, which causes serious resource waste.

[0017] The site is supplied with a frequency conversion screw air compressor 1, and the rated exhaust pressure is 0.8MPa, and the exhaust capacity is 12.5-15.5m3 / min, which is supplied to three compressed air storage tanks after an adsorption type drying machine 2, which are desorption gas storage tank 3, dust removal back flushing gas storage tank 4 and instrument gas storage tank 5.

[0018] According to the process requirements, the variable frequency screw air compressor 1 outlet is set to 0.65 MPa, the desorption gas storage tank 3, the dust removal back flushing gas storage tank 4 and the instrument gas storage tank 5 outlet are respectively set to reduce pressure valve 6 (reducing valve or pneumatic regulating valve), and the following is set respectively:

[0019] 1. The desorption gas is the part with the highest required pressure in the system, so it does not need to install a pressure reducing valve and directly delivers the pressure 0.65 MPa to the air compressor;

[0020] 2. The instrument gas (mainly pneumatic valves, etc.) is set to a pressure reduced from 0.65 MPa to 0.4 MPa;

[0021] 3. The dust removal back flushing gas is set to a pressure reducing device from 0.65 MPa to 0.55 MPa, and then delivered to the ash bin fluidization system, the flue blowing system and the dust remover back flushing system, respectively. The ash bin fluidization system and the flue blowing system are high pressure 0.55 MPa and do not need to set a pressure reducing device. The dust removal back flushing system is set to a pressure reducing valve according to the specification of the pulse valve, and the pressure is reduced from 0.55 MPa to 0.5 MPa.

[0022] Table 1 design compressed air pressure distribution table

[0023]

[0024] The pipeline pressure is set to 0.65 MPa, and the total gas consumption of the system is more than 1030 m 3 / day after optimization. According to the data comparison and statistical results, after optimizing the compressed air system pipeline and pressure, the gas consumption can be saved by 1030 m 3 / day * 365 days = 376,000 m 3 After the reasonable gas distribution technology, the power consumption of the air compressor is significantly reduced.

[0025] The above examples are only used to further illustrate the compressed air pipeline distribution system in the glass flue gas treatment system of the present application, but the present application is not limited to the examples. Any simple modification, equivalent change and modification of the above examples according to the technical essence of the present application all fall within the protection scope of the technical scheme of the present application.

Claims

1. A compressed air piping distribution system in a glass flue gas treatment system, characterized by: It includes air compressor and multiple compressed air storage tanks, the air compressor delivers compressed air to each compressed air storage tank through a dryer, the compressed air storage tanks are respectively connected to instrument air pipe, air pipe for de-icing and air pipe for dust removal back blowing, wherein the outlets of two compressed air storage tanks connected to the instrument air pipe and the air pipe for dust removal back blowing are respectively provided with pressure reducing valves or pneumatic regulating valves, the air pipe for dust removal back blowing is respectively connected to ash bin fluidization system, flue injection system and dust remover back blowing system through branch pipes, and the front ends of the branch pipes of the air pipe for dust removal back blowing connected to the dust remover back blowing system are respectively provided with pressure reducing valves or pneumatic regulating valves.

2. A compressed air piping distribution system in a glass fume treatment system as claimed in claim 1, characterized in that: The delivery pressure of the air compressor outlet is 0.65 MPa, the delivery pressure of the instrument air pipe is 0.4 MPa, the delivery pressure of the air pipe for dust removal back blowing is 0.55 MPa, and the delivery pressure of the branch pipe of the dust remover back blowing system is 0.5 MPa.

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