Self-cleaning desulfurization regeneration ejector

Abstract

The utility model relates to a self-cleaning desulfurization regeneration ejector which comprises a gas-liquid mixing chamber, a gas inlet, a desulfurization liquid nozzle, a gas-liquid mixing chamber contraction section, a mixing section and an expansion section, the gas-liquid mixing chamber, the gas-liquid mixing chamber contraction section, the mixing section and the expansion section are sequentially arranged from top to bottom, and the gas-liquid mixing chamber is provided with the gas inlet and the desulfurization liquid nozzle. The gas-liquid mixing device is characterized by further comprising a cleaning liquid inlet, and the cleaning liquid inlet is formed in the gas-liquid mixing chamber and enters the gas-liquid mixing chamber in the tangential direction of the circular section of the gas-liquid mixing chamber. According to the self-cleaning desulfurization regeneration ejector disclosed by the utility model, a continuous cleaning structure is additionally arranged in the gas-liquid mixing chamber of the desulfurization regeneration ejector, so that the problem that the gas-liquid mixing chamber and a contraction section of the ejector are blocked by sulfur is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of desulfurization, and in particular relates to a self-cleaning desulfurization regeneration ejector. Background Art

[0002] The jet regeneration process technology in the wet oxidation desulfurization regeneration process currently used in coal chemical and petrochemical fields has been widely used due to its advantages of small footprint, good regeneration effect and low investment. However, it is found that the jet regenerator is generally blocked by sulfur during use, especially when the hydrogen sulfide content of the first-stage desulfurized coal gas is high (>1g / m 3 ) often gets blocked, which seriously affects the continuous operation of the desulfurization injection regeneration device. Utility Model Content

[0003] In view of the clogging problem of the current desulfurization jet regenerator, the utility model proposes a self-cleaning desulfurization regeneration jet, which can achieve self-cleaning and avoid the sulfur clogging problem in the gas-liquid mixing chamber and the contraction section of the jet.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A self-cleaning desulfurization regeneration ejector comprises a gas-liquid mixing chamber, a gas inlet, a desulfurization liquid nozzle, a gas-liquid mixing chamber contraction section, a mixing section, and an expansion section, wherein the gas-liquid mixing chamber, the gas-liquid mixing chamber contraction section, the mixing section, and the expansion section are arranged in sequence from top to bottom, and the gas-liquid mixing chamber is provided with a gas inlet and a desulfurization liquid nozzle, and is characterized in that it also comprises a cleaning liquid inlet, which is arranged in the gas-liquid mixing chamber and enters obliquely downward along the tangent direction of the circular cross-section of the gas-liquid mixing chamber.

[0006] The contraction section of the gas-liquid mixing chamber is conical, the end with a larger diameter is connected to the gas-liquid mixing chamber, and the end with a smaller diameter is connected to the mixing section.

[0007] The expansion section includes a tapered section and a straight section with gradually increasing diameters. The small diameter opening of the tapered section is connected to the mixing section, and the large diameter opening is connected to the straight section. The diameter of the straight section is larger than that of the mixing section.

[0008] The gas inlet is located at the side of the gas-liquid mixing chamber, and the desulfurization liquid nozzle is located at the top of the gas-liquid mixing chamber.

[0009] The amount of cleaning liquid sprayed into the cleaning liquid inlet is less than 20% of the amount of desulfurization liquid sprayed into the desulfurization liquid nozzle.

[0010] Compared with the existing technology, the beneficial effects of the utility model are:

[0011] The utility model discloses a self-cleaning desulfurization regeneration ejector, which avoids the problem of sulfur blockage in the ejector gas-liquid mixing chamber and the contraction section by adding a continuous cleaning structure in the desulfurization ejector regeneration chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of a self-cleaning desulfurization regeneration ejector structure of the present invention.

[0013] Figure 2 yes Figure 1 AA view.

[0014] In the figure: 1-desulfurization regeneration ejector, 1-1 gas-liquid mixing chamber contraction section, 1-2 gas inlet, 1-3 desulfurization liquid nozzle, 1-4 cleaning liquid inlet, 1-5 mixing section, 1-6 expansion section, 1-7 gas-liquid mixing chamber, 1-8 cleaning liquid flow trajectory. DETAILED DESCRIPTION

[0015] The following is a further description of the implementation of the present invention in conjunction with specific embodiments:

[0016] See Figure 1 , Figure 2 A self-cleaning desulfurization regeneration ejector comprises a gas-liquid mixing chamber 1-7, a gas inlet 1-2, a desulfurization liquid nozzle 1-3, a gas-liquid mixing chamber contraction section 1-1, a mixing section 1-5, and an expansion section 1-6, wherein the gas-liquid mixing chamber 1-7, the gas-liquid mixing chamber contraction section 1-1, the mixing section 1-5, and the expansion section 1-6 are arranged in sequence from top to bottom, and the gas-liquid mixing chamber 1-7 is provided with a gas inlet 1-2 and a desulfurization liquid nozzle 1-7; and further comprises a cleaning liquid inlet 1-4, wherein the cleaning liquid inlet 1-4 is arranged in the gas-liquid mixing chamber 1-7, and enters obliquely downward along the tangent direction of the circular cross section of the gas-liquid mixing chamber 1-7.

[0017] The gas-liquid mixing chamber contraction section 1-1 is conical, with the end with a larger diameter connected to the gas-liquid mixing chamber 1-7 and the end with a smaller diameter connected to the mixing section 1-5.

[0018] The expansion section 1-6 includes a tapered section and a straight section with gradually expanding diameters. The small diameter opening of the tapered section is connected to the mixing section 1-5, and the large diameter opening is connected to the straight section. The diameter of the straight section is larger than that of the mixing section 1-5.

[0019] The gas inlet 1-2 is on the side of the gas-liquid mixing chamber 1-7, and the desulfurization liquid nozzle 1-3 is on the top of the gas-liquid mixing chamber 1-7.

[0020] The amount of cleaning liquid sprayed into the cleaning liquid inlet 1-4 is less than 20% of the amount of desulfurization liquid sprayed into the nozzle 1-3. Preferably, the amount of cleaning liquid fed into the cleaning liquid inlet 1-4 is 5% to 6% of the amount of desulfurization liquid nozzle.

[0021] The upper part of the self-cleaning desulfurization regeneration ejector 1 is provided with a desulfurization liquid nozzle 1-3, a gas-liquid mixing chamber 1-7, a mixing section 1-5, an expansion section 1-6, and a cleaning liquid inlet 1-4. The desulfurization liquid nozzle 1-3 is provided with a desulfurization liquid inlet, and the gas-liquid mixing section 1-7 has a gas inlet 1-2.

[0022] The desulfurized liquid is sprayed into the gas-liquid mixing chamber 1-7 at high speed from the upper desulfurized liquid nozzle 1-3 under pressure (3-5 MPa), and at the same time, the gas coming in from the gas inlet 1-2 is sucked in for gas-liquid mixing and enters the lower mixing section 1-5 for further emulsification and mixing, and then discharged from the lower expansion section 1-6.

[0023] The cleaning liquid inlet 1-4 sprays cleaning liquid into the gas-liquid mixing chamber 1-7 along the tangent direction of the circular cross section of the mixing chamber. The cleaning liquid rotates and flows downward on the inner wall of the mixing chamber and enters the mixing section 1-5 through the gas-liquid mixing chamber contraction section 1-1.

[0024] The cleaning liquid introduced into the cleaning liquid inlet 1-4 can be a desulfurization liquid, or other aqueous liquid that has no obvious effect on the desulfurization liquid. The desulfurization liquid is preferably used.

[0025] The utility model is a self-cleaning desulfurization regeneration ejector, the process and function of which are as follows:

[0026] 1) The desulfurization liquid is sprayed into the gas-liquid mixing chamber 1-7 at high speed from the upper desulfurization liquid nozzle 1-3 under pressure (3.5~4MPa), and a relatively slight negative pressure is formed in the mixing chamber to suck in the gas coming in from the gas inlet 1-2. The liquid and gas are mixed in the gas-liquid mixing chamber 1-7 and enter the lower mixing section 1-5 for further emulsification, mixing and oxidation of the desulfurization liquid to regenerate it, and then discharged from the lower expansion section 1-6.

[0027] 2) The cleaning liquid inlet 1-4 sprays the cleaning liquid into the gas-liquid mixing chamber 1-7 in the counterclockwise tangent direction of the circular cross section of the mixing chamber. The cleaning liquid rotates and flows downward on the inner wall of the mixing chamber, passes through the gas-liquid mixing chamber contraction section 1-1 and enters the mixing section 1-5, thereby realizing continuous cleaning of the gas-liquid mixing chamber 1-7 and the gas-liquid mixing chamber contraction section 1-1.

[0028] Although the specific implementation methods of the utility model are described above in conjunction with the accompanying drawings, this does not limit the scope of protection of the utility model. On the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. A self-cleaning desulfurization regeneration ejector, comprising a gas-liquid mixing chamber, a gas inlet, a desulfurization liquid nozzle, a gas-liquid mixing chamber contraction section, a mixing section, and an expansion section, wherein the gas-liquid mixing chamber, the gas-liquid mixing chamber contraction section, the mixing section, and the expansion section are arranged in sequence from top to bottom, and the gas-liquid mixing chamber is provided with a gas inlet and a desulfurization liquid nozzle, characterized in that: It also includes a cleaning liquid inlet, which is arranged in the gas-liquid mixing chamber and enters the gas-liquid mixing chamber obliquely downward along the tangent direction of the circular cross-section of the gas-liquid mixing chamber.

2. A self-cleaning desulfurization regeneration ejector according to claim 1, characterized in that: The contraction section of the gas-liquid mixing chamber is conical, the end with a larger diameter is connected to the gas-liquid mixing chamber, and the end with a smaller diameter is connected to the mixing section.

3. A self-cleaning desulfurization regeneration ejector according to claim 1, characterized in that: The expansion section includes a tapered section and a straight section with gradually increasing diameters. The small diameter opening of the tapered section is connected to the mixing section, and the large diameter opening is connected to the straight section. The diameter of the straight section is larger than that of the mixing section.

4. A self-cleaning desulfurization regeneration ejector according to claim 1, characterized in that: The gas inlet is located at the side of the gas-liquid mixing chamber, and the desulfurization liquid nozzle is located at the top of the gas-liquid mixing chamber.

5. A self-cleaning desulfurization regeneration ejector according to claim 1, characterized in that: The amount of cleaning liquid sprayed into the cleaning liquid inlet is less than 20% of the amount of desulfurization liquid sprayed into the desulfurization liquid nozzle.

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