Incineration atomization spray gun structure for preparing acid from low-grade sulfur and desulfurization waste liquid

Abstract

The utility model discloses an incineration atomization spray gun structure for preparing acid from low-grade sulfur and desulfurization waste liquid, which comprises a feed pipe, one side of the feed pipe is communicated with an air inlet, one radial side of the feed pipe is communicated with a liquid inlet, one side of the feed pipe opposite to the air inlet is provided with a discharge port, and the discharge port is concentrically and coaxially communicated with a gun barrel. The gun barrel is provided with a flow meter, the tail end of the gun barrel is concentrically and coaxially communicated with an atomizing spray head, the air inlet is communicated with a compressed air inlet pipe, the compressed air inlet pipe is provided with a flow control valve, and the flow control valve is in linkage fit with the flow meter through an external controller to control the processing capacity of the atomizing spray gun. The atomization effect is improved, and follow-up equipment is prevented from being blocked.

Description

Technical Field

[0001] The utility model relates to the technical field of low-grade sulfur and desulfurization waste liquid acid production equipment, in particular to an incineration atomization spray gun structure used for low-grade sulfur and desulfurization waste liquid acid production. Background Art

[0002] Traditional synthetic ammonia desulfurization processes produce wastewater containing secondary salts such as ammonium thiocyanate and ammonium thiosulfate during the desulfurization and decyanation processes. High concentrations of these secondary salts in the system can severely impact the efficiency of coal gas desulfurization and decyanation, exacerbating equipment corrosion. Currently used treatment methods for these secondary salts include: adding the wastewater to coking coal blending for incineration and decomposition in coke ovens; and extracting the secondary salts of ammonium thiocyanate and ammonium thiosulfate. Production practice has shown that adding the secondary salt wastewater to coking coal blending for incineration and decomposition in coke ovens limits its application due to the release of harmful gases such as ammonia dissolved in the wastewater during the addition process, which can cause environmental pollution and volatilize into the atmosphere. Extracting the secondary salts of ammonium thiocyanate and ammonium thiosulfate, however, is difficult due to the small market capacity and sales challenges of these secondary salts, particularly the lack of market demand for ammonium thiosulfate. This generates new coking solid waste and creates subsequent environmental problems. Due to these issues, the current desulfurization wastewater treatment processes are limited in practical application, resulting in high concentrations of secondary salts in most desulfurization units, which impacts both the proper performance of the units and the environmental performance of the coking process. Therefore, a process for producing sulfuric acid using low-quality sulfur and secondary salt wastewater generated by ammonia-based wet oxidation desulfurization processes, such as HPF and PDS, as raw materials has been proposed. The process consists of raw material pretreatment, incineration, waste heat recovery, purification, drying, conversion, absorption, and tail gas detoxification.

[0003] The existing incineration spray gun structure has the following problems in the above incineration process:

[0004] The processing capacity of the atomizing spray gun is uncontrollable, resulting in poor atomization effect and causing blockage of subsequent equipment. Utility Model Content

[0005] The utility model provides an incineration atomizing spray gun structure for producing acid from low-quality sulfur and desulfurization waste liquid, aiming to solve the problem that the processing capacity of the incineration atomizing spray gun in the process of producing sulfuric acid using the above-mentioned low-quality sulfur and secondary salt waste liquid as raw materials is uncontrollable, resulting in poor atomization effect and causing blockage of subsequent equipment.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] The incineration atomizing spray gun structure for producing acid from low-grade sulfur and desulfurization waste liquid includes a feed pipe, one side of the feed pipe is connected to an air inlet, the radial side of the feed pipe is connected to a liquid inlet, the side of the feed pipe opposite to the air inlet is provided with a discharge port, the discharge port is coaxially connected to a gun rod, the gun rod is provided with a flow meter, the end of the gun rod is coaxially connected to an atomizing nozzle, the air inlet is connected to a compressed air inlet pipe, the compressed air inlet pipe is provided with a flow control valve, and the flow control valve is linked to the flow meter through an external controller.

[0008] Preferably, the value detected by the flow meter does not exceed 2t / h.

[0009] As a more preferred embodiment, the flow meter is arranged between the discharge port of the feed pipe and the gun rod through a flange connection.

[0010] Furthermore, a protective cover is provided on the side wall of the gun barrel.

[0011] Furthermore, the protective sleeve is concentric and coaxial with the gun rod, and there is a gap between the outer wall of the gun rod and the inner wall of the protective sleeve, and a cold air inlet is provided on one radial side of the protective sleeve.

[0012] Specifically, the side of the protective cover close to the flow meter is closed.

[0013] More specifically, the atomizing nozzle extends out from the protective sleeve.

[0014] Beneficial effects of the utility model:

[0015] The utility model monitors the flow in the gun barrel in real time by adding a flow meter. When the flow in the gun barrel exceeds the set value, the flow control valve on the compressed air intake pipe is controlled by an external controller to reduce the intake amount, thereby controlling the flow in the gun barrel to return to the set value. The control effect is good. In the process of preparing sulfuric acid using the above-mentioned low-quality sulfur and secondary salt waste liquid as raw materials, the processing capacity of the atomizing spray gun can be controlled, the atomizing effect can be improved, and the clogging problem of subsequent equipment can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of one side of the utility model;

[0017] Figure 2 It is a three-dimensional schematic diagram of the other side of the utility model;

[0018] In the figure: 1. Feed pipe; 2. Liquid inlet; 3. Air inlet; 4. Compressed air inlet pipe; 5. Flow control valve; 6. Gun rod; 7. Flow meter; 8. Protective cover; 9. Atomizing nozzle; 10. Cold air inlet. DETAILED DESCRIPTION

[0019] As follows, embodiments are further described with reference to the accompanying drawings.

[0020] like Figure 1~Figure 2 As shown, as a preferred embodiment 1, an incineration atomizing spray gun structure for producing acid from low-grade sulfur and desulfurization waste liquid includes a feed pipe 1, one side of the feed pipe 1 is connected to an air inlet 3, the radial side of the feed pipe 1 is connected to a liquid inlet 2, a side of the feed pipe 1 opposite to the air inlet 3 is provided with a discharge port, the discharge port is coaxially connected to a gun rod 6, a flow meter 7 is provided on the gun rod 6, the end of the gun rod 6 is coaxially connected to an atomizing nozzle 9, the air inlet 3 is connected to a compressed air inlet pipe 4, the compressed air inlet pipe 4 A flow control valve 5 is provided on the gun, and the flow control valve 5 is linked with the flow meter 7 through an external controller. By adding the flow meter 7, the flow in the gun barrel 6 is monitored in real time. When the flow in the gun barrel 6 exceeds the set value, the flow control valve 5 on the compressed air inlet pipe 4 is controlled by the external controller to reduce the intake volume, thereby controlling the flow in the gun barrel 6 to return to the set value. The control effect is good, and in the process of producing sulfuric acid with the above-mentioned low-quality sulfur and secondary salt waste liquid as raw materials, the processing capacity of the atomizing spray gun can be controlled, the atomization effect can be improved, and the clogging problem of subsequent equipment can be reduced.

[0021] Preferably, the external controller can be an industrial PLC controller installed in a factory building, and the flow meter 7 can be an electronic flow meter in the prior art.

[0022] The value detected by the flow meter 7 does not exceed 2t / h, which can achieve the best atomization effect for forming raw sulfur slurry from low-quality sulfur and secondary salt waste liquid, and prevent subsequent equipment from being blocked.

[0023] The flow meter 7 is arranged between the discharge port of the feed pipe 1 and the gun rod 6 through a flange connection, and is used to detect the flow rate of the atomized raw sulfur slurry when entering the gun rod 6.

[0024] As a preferred embodiment 2, a protective cover 8 is provided on the side wall of the gun rod 6, which is a conventional setting of the atomizing spray gun to ensure the effect of the atomizing spray gun.

[0025] The protective sleeve 8 is concentric and coaxial with the gun rod 6, and there is a gap between the outer wall of the gun rod 6 and the inner wall of the protective sleeve 8. A cold air inlet 10 is provided on one radial side of the protective sleeve 8 to ensure the cooling protection effect.

[0026] The side of the protective cover 8 close to the flow meter 7 is closed to prevent the internal heat from affecting the flow meter 7.

[0027] The atomizing nozzle 9 is inserted into the protective cover 8. The working principle of the utility model is as follows:

[0028] The utility model monitors the flow in the gun barrel 6 in real time by adding a flow meter 7. When the flow in the gun barrel 6 exceeds the set value, the flow control valve 5 on the compressed air intake pipe 4 is controlled by an external controller to reduce the intake amount, thereby controlling the flow in the gun barrel 6 to return to the set value. The control effect is good. In the process of preparing sulfuric acid using the above-mentioned low-quality sulfur and secondary salt waste liquid as raw materials, the processing capacity of the atomizing spray gun can be controlled, the atomization effect can be improved, and the clogging problem of subsequent equipment can be reduced.

Claims

1. An incineration atomizing spray gun structure for producing acid from low-grade sulfur and desulfurization waste liquid, comprising a feed pipe (1), characterized in that: One side of the feed pipe (1) is connected to an air inlet (3), and the radial side of the feed pipe (1) is connected to a liquid inlet (2). A discharge port is provided on the side of the feed pipe (1) opposite to the air inlet (3). The discharge port is coaxially connected to a gun rod (6). A flow meter (7) is provided on the gun rod (6). An atomizing nozzle (9) is coaxially connected to the end of the gun rod (6). The air inlet (3) is connected to a compressed air inlet pipe (4). A flow control valve (5) is provided on the compressed air inlet pipe (4), and the flow control valve (5) is linked to the flow meter (7) through an external controller.

2. The incineration atomizing spray gun structure for producing acid from low-grade sulfur and desulfurization waste liquid according to claim 1 is characterized in that: The value detected by the flow meter (7) does not exceed 2t / h.

3. The incineration atomizing spray gun structure for producing acid from low-grade sulfur and desulfurization waste liquid according to claim 2 is characterized in that: The flow meter (7) is arranged between the discharge port of the feed pipe (1) and the gun rod (6) through a flange connection.

4. The incineration atomizing spray gun structure for producing acid from low-grade sulfur and desulfurization waste liquid according to claim 3 is characterized in that: A protective sleeve (8) is provided on the side wall of the gun barrel (6).

5. The incineration atomizing spray gun structure for producing acid from low-grade sulfur and desulfurization waste liquid according to claim 4 is characterized in that: The protective sleeve (8) is coaxial with the gun rod (6), and a gap exists between the outer wall of the gun rod (6) and the inner wall of the protective sleeve (8). A cold air inlet (10) is provided on one radial side of the protective sleeve (8).

6. The incineration atomizing spray gun structure for producing acid from low-grade sulfur and desulfurization waste liquid according to claim 5, characterized in that: The side of the protective cover (8) close to the flow meter (7) is closed.

7. The incineration atomizing spray gun structure for producing acid from low-grade sulfur and desulfurization waste liquid according to claim 6 is characterized in that: The atomizing nozzle (9) passes through the protective sleeve (8).

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