Raw gas washing tower convenient for wastewater discharge

Abstract

The utility model provides a raw gas washing tower convenient for wastewater discharge, which comprises a tower body, a water gas outlet arranged at the tower top, a demister, a sprayer, a conical slag tank and a raw gas inlet arranged below the tower body, the demister, the sprayer and the conical slag tank are sequentially arranged from the tower top to the tower bottom, and the sprayer is connected with a water supply system through a water supply pipeline. A slag discharging opening is formed in the bottom of the slag groove, a black water outlet is formed in the upper portion of the side portion of the slag groove, a water outlet pipe connected with the black water outlet is arranged in the slag groove, a second pipe opening of the water outlet pipe is connected to the black water outlet, and a floating device is arranged at a first pipe opening of the water outlet pipe and comprises an annular air bag connected to the outside of the first pipe opening. Through the design of the floating device, the position of the pipe opening of the water outlet pipe is automatically adjusted, and the problem that the black water outlet is blocked by accumulated slag is effectively prevented.

Description

Technical Field

[0001] The present application relates to the technical field of raw gas washing towers, and more specifically, to a raw gas washing tower that is convenient for wastewater discharge. Background Art

[0002] The scrubber is a gas purification equipment, which is widely used in pre-treatment of industrial waste gas purification and dust removal, and has a good purification effect. For coal gasification process, gas scrubbing is inevitable, and this unit operation is used in all coal gasification technologies. Because its working principle is similar to the scrubbing process, it is named the scrubber.

[0003] The wet raw gas enters the scrubber and enters the water bath at the bottom of the scrubber along the downcomer. Most of the fine ash carried by the raw gas is removed from the raw gas here. The raw gas rises through the annular gap between the downcomer and the gas guide pipe and enters the tower plate at the top of the scrubber. The high-temperature condensate from the conversion washes the fine ash remaining in the raw gas. The water droplets carried by the raw gas are separated in the demister above the tower plate. During operation, the black water in the scrubber is discharged through the black water outlet. As the slag in the conical slag tank gradually accumulates to the black water outlet, the slag accumulates and blocks the black water outlet. Utility Model Content

[0004] The technical problem to be solved by the present application is to provide a raw gas washing tower which is convenient for wastewater discharge and solves the problem of slag accumulation blocking the black water outlet.

[0005] In order to solve the above-mentioned problems, the present application provides a raw gas washing tower which is convenient for wastewater discharge, and the washing tower comprises: a tower body, a water-gas outlet arranged at the top of the tower, a demister, a sprayer, and a conical slag trough arranged in sequence from the top of the tower to the bottom of the tower, a raw gas inlet arranged below the tower body, the sprayer is connected to the water supply system through a water supply pipe, a slag discharge port is arranged at the bottom of the slag trough, and a black water outlet is arranged above the side of the slag trough, wherein a water outlet pipe connected to the black water outlet is arranged in the slag trough, a second pipe mouth of the water outlet pipe is connected to the black water outlet, and a floating device is arranged at the first pipe mouth of the water outlet pipe, and the floating device includes an annular air bag connected to the outside of the first pipe mouth.

[0006] According to the scheme, a water outlet pipe connected to the black water outlet is provided in the slag tank, and the second pipe opening of the water outlet pipe is connected to the black water outlet. A floating device is provided at the first pipe opening of the water outlet pipe. The function of the floating device is to automatically adjust the pipe opening position of the water outlet pipe as the black water level in the slag tank changes, so as to prevent the accumulated slag from blocking the black water outlet. Since the floating device is provided at the first pipe opening, the first pipe opening of the water outlet pipe changes as the black water level changes, and the accumulated slag in the slag tank always sinks to the bottom of the black water, so the accumulated slag will not block the first pipe opening and the black water outlet. The crude gas washing tower for facilitating wastewater discharge provided in the present application realizes automatic adjustment of the pipe opening position of the water outlet pipe through the design of the floating device, and effectively prevents the problem of accumulated slag blocking the black water outlet.

[0007] In order to facilitate the connection between the floating device and the first pipe opening, as an improvement of the above-mentioned floating device of the present application, the floating device also includes: an annular sheet mounting plate arranged on the inner ring of the annular airbag, a connecting column connected to the mounting plate, and the connecting column is installed on the flange at the first pipe opening through a flange.

[0008] In order to reduce the weight of the floating device, the mounting plate, connecting column and flange are all made of plastic.

[0009] An annular sheet-shaped mounting plate is arranged on the inner ring of the annular airbag, and the annular airbag is mounted on the flange at the first pipe opening through the mounting plate.

[0010] In order to ensure that the first pipe opening is always located below the black water surface, as an improvement to the above solution of the present application, the bottom of the annular airbag is connected to the first pipe opening.

[0011] In order to make the annular airbag have better mechanical properties, as an improvement of the above solution of the present application, the annular airbag is made of rubber.

[0012] In order to facilitate the adjustment of the buoyancy of the floating device, as an improvement of the above-mentioned solution of the present application, an air valve is provided on the annular airbag.

[0013] In order to ensure that the floating device moves within a limited range, as an improvement of the above solution of the present application, the floating device is connected to the tower body by a connecting rope.

[0014] In order to further prevent large-size impurities in the slag trough from entering the black water outlet, as an improvement to the above-mentioned solution of the present application, a filter screen is provided at the first pipe opening.

[0015] In order to facilitate the installation and replacement of the filter, as an improvement of the above-mentioned solution of the present application, the filter is installed at the first pipe opening through a flange.

[0016] The beneficial effects of this application are:

[0017] In the present application, a water outlet pipe connected to the black water outlet is arranged in the slag tank, and the second pipe opening of the water outlet pipe is connected to the black water outlet. A floating device is arranged at the first pipe opening of the water outlet pipe, and its core is a ring-shaped air bag. The function of the floating device is to automatically adjust the pipe opening position of the water outlet pipe as the black water level in the slag tank changes, so as to prevent the accumulated slag from blocking the black water outlet. Since the floating device is arranged at the first pipe opening, the first pipe opening of the water outlet pipe changes as the black water level changes, and the accumulated slag in the slag tank always sinks to the bottom of the black water, so the accumulated slag will not block the first pipe opening and the black water outlet. The crude gas washing tower for facilitating wastewater discharge provided in the present application realizes the automatic adjustment of the pipe opening position of the water outlet pipe through the design of the floating device, and effectively prevents the problem of accumulated slag blocking the black water outlet.

[0018] In addition to the technical problems solved by the utility model described above, the technical features that constitute the technical solution and the advantages brought by the technical features of the technical solution, other technical problems that can be solved by the raw gas washing tower that facilitates wastewater discharge of the utility model, other technical features included in the technical solution and the advantages brought by these technical features will be further described in detail in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of a raw gas washing tower for facilitating wastewater discharge in an embodiment of the present application;

[0020] Figure 2 It is a schematic diagram of a floating device in a raw gas washing tower for facilitating wastewater discharge in an embodiment of the present application;

[0021] Figure 3 This is a schematic diagram from another perspective of a floating device in a raw gas washing tower for facilitating wastewater discharge in an embodiment of the present application;

[0022] Description of reference numerals:

[0023] 1. Tower body; 2. Water gas outlet; 3. Demister; 4. Sprinkler;

[0024] 5. Conical slag trough; 51. Slag outlet; 52. Black water outlet; 53. Water outlet pipe; 531. First pipe outlet; 532. Second pipe outlet; 54. Floating device; 541. Annular airbag; 542. Mounting plate; 543. Air valve; 544. Connecting column; 55. Filter screen;

[0025] 6. Raw gas inlet; 7. Water supply pipeline; 8. Connecting rope. DETAILED DESCRIPTION

[0026] The following is a detailed description of the embodiments of the technical solution of the present application in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0027] like Figure 1An embodiment of a raw gas washing tower for facilitating wastewater discharge of the present application is illustrated, the washing tower comprising: a tower body 1, a water gas outlet 2 arranged at the top of the tower, a demister 3, a sprayer 4, and a conical slag trough 5 arranged in sequence from the top to the bottom of the tower, a raw gas inlet 6 arranged at the bottom of the tower body, the sprayer 4 is connected to the water supply system through a water supply pipe 7, a slag discharge port 51 is arranged at the bottom of the slag trough 5, a black water outlet 52 is arranged above the side of the slag trough, a water outlet pipe 53 connected to the black water outlet 52 is arranged in the slag trough 5, a second pipe mouth 532 of the water outlet pipe 53 is connected to the black water outlet 52, and a floating device 54 is arranged at the first pipe mouth 531 of the water outlet pipe 53, and the floating device 54 includes an annular air bag 541 connected to the outside of the first pipe mouth 531.

[0028] In this embodiment, the washing tower mainly includes a tower body 1, a water gas outlet 2, a demister 3, a sprayer 4, a conical slag trough 5, a raw gas inlet 6 and other key parts. The sprayer 4 is connected to the water supply system through a water supply pipe 7 and is used to spray water during the washing process. The slag trough 5 is located below the tower body 1 and is designed to be conical to facilitate the concentration and discharge of accumulated slag. A black water outlet 52 is provided above the side of the slag trough 5 to discharge the waste black water generated after the raw gas is washed. An outlet pipe 53 connected to the black water outlet 52 is provided in the slag trough 5, and the second pipe mouth 532 of the outlet pipe 53 is connected to the black water outlet 52. A floating device 54 is provided at the first pipe mouth 531 of the outlet pipe 52, and its core is a ring-shaped air bag 541. The function of the floating device 54 is to automatically adjust the pipe mouth position of the outlet pipe 52 as the black water liquid level in the slag trough 5 changes, so as to prevent the accumulated slag from blocking the black water outlet 52.

[0029] In this embodiment, since a floating device 54 is provided at the first pipe opening 531, the first pipe opening 531 of the outlet pipe 53 changes with the change of the internal black water level, and the accumulated slag in the slag tank 5 always sinks to the bottom of the black water. Therefore, the accumulated slag will not block the first pipe opening 531 and the black water outlet 52.

[0030] Therefore, the crude gas washing tower provided in this embodiment, which is convenient for wastewater discharge, realizes automatic adjustment of the position of the outlet pipe through the design of the floating device, and effectively prevents the problem of slag accumulation blocking the black water outlet.

[0031] like Figure 2A schematic diagram of a floating device is shown. In one embodiment of the present application, the floating device 54 further includes: an annular sheet-shaped mounting plate 542 arranged on the inner circle of the annular airbag 541, a connecting column 544 connected to the mounting plate 542, and the connecting column 544 is mounted on the flange at the first pipe opening 531 through a flange. The mounting plate 542, the connecting column 544, and the flange are all made of plastic, and the plastic material can reduce the weight of the floating device 54. The annular airbag 541 is the main part of the floating device 54, and the position of the floating device 54 can rise and fall with the change of the black water level in the slag tank 5. This change will directly affect the position of the first pipe opening 531 of the outlet pipe 53, thereby preventing the accumulated slag from blocking the black water outlet 52. The mounting plate 542 is designed as an annular sheet, which is located on the inner circle of the annular airbag 541. A connecting column 544 is arranged between the mounting plate 542 and the flange, and the connecting column forms a space between the annular airbag 541 and the first pipe opening 531, which can facilitate the black water to enter the outlet pipe 53 through the first pipe opening 531. Flange is a common connection device, used for providing tight, detachable connection between pipeline or equipment. Here, the effect of flange is that floating device is firmly installed on the outlet pipe 53, guarantees the stability and reliability of whole floating device.

[0032] like Figure 2 In one embodiment, the bottom of the annular airbag 541 is connected to the first pipe opening 531. This design ensures that the first pipe opening 531 of the outlet pipe is located below the black water level, so that the floating device can automatically adjust the position of the outlet pipe opening according to the change of the black water amount in the slag tank.

[0033] The annular airbag 541 is made of rubber. The rubber material gives the annular airbag 541 good elasticity and flexibility. This allows the airbag to be easily deformed when subjected to external pressure (such as pressure from accumulated slag in the slag tank), and quickly return to its original shape after the pressure disappears. The rubber material generally has good wear resistance and corrosion resistance, and can resist the erosion of various substances in the black water and accumulated slag in the slag tank 5, thereby extending the service life of the airbag.

[0034] like Figure 2 , an air valve 543 is provided on the annular air bag 541. The air valve 543 allows the staff to adjust the gas pressure inside the annular air bag 541. When the position of the outlet pipe 53 needs to be adjusted, the operator can increase or decrease the gas inside the air bag by opening or closing the air valve 543, thereby controlling the position of the first outlet pipe 531 from the liquid surface.

[0035] like Figure 1 The floating device 54 is connected to the tower body 1 by a connecting rope 8. The connecting rope 8 firmly connects the floating device 54 to the tower body 1, preventing the floating device from drifting too far and ensuring that the floating device always works at a predetermined position.

[0036] like Figure 3 , a filter screen 55 is provided at the first pipe opening 531. The filter screen 55 can effectively intercept solid particles, impurities or accumulated slag that may exist in the slag tank 5, further prevent impurities from entering the outlet pipe 53 and blocking the first pipe opening 531, ensure the smoothness of the black water outlet 52, and avoid interruption of system operation or reduction of efficiency due to blockage. The filter screen 55 is installed at the first pipe opening 531 through a flange. The flange can ensure good sealing between the filter screen 55 and the first pipe opening 531 to prevent leakage of liquid or gas. The design of the flange makes it easy to install and disassemble the filter screen 55. When the filter screen needs to be cleaned or replaced, it can be easily removed by simply unscrewing the bolts.

[0037] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0038] In the description of the embodiments of the present application, the orientations or positional relationships indicated by technical terms such as "upper", "lower", "inside" and "outside" are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the embodiments of the present application and simplifying the description. They do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0039] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "set", "provided with", "connected", "installed" and the like should be understood in a broad sense, for example, they can be fixedly connected, detachably connected, or integrated; they can be directly connected, or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A crude gas washing tower for facilitating wastewater discharge, comprising: A tower body (1), a water gas outlet (2) arranged at the top of the tower, a demister (3), a sprayer (4), and a conical slag trough (5) arranged in sequence from the top to the bottom of the tower, a raw gas inlet (6) arranged at the bottom of the tower body, the sprayer (4) being connected to a water supply system via a water supply pipe (7), a slag discharge port (51) being arranged at the bottom of the slag trough (5), and a black water outlet (52) being arranged above the side of the slag trough, characterized in that: A water outlet pipe (53) connected to the black water outlet (52) is arranged in the slag trough (5); a second pipe opening (532) of the water outlet pipe (53) is connected to the black water outlet (52); a floating device (54) is arranged at the first pipe opening (531) of the water outlet pipe (53); the floating device (54) comprises an annular air bag (541) connected to the outside of the first pipe opening (531).

2. The crude gas washing tower for facilitating wastewater discharge according to claim 1, characterized in that: The floating device (54) further comprises: an annular sheet-shaped mounting plate (542) arranged on the inner ring of the annular airbag (541), a connecting column (544) connected to the mounting plate (542), and the connecting column (544) is mounted on the flange at the first pipe opening (531) via a flange.

3. The crude gas washing tower for facilitating wastewater discharge according to claim 2, characterized in that: The mounting plate (542), the connecting column (544) and the flange are all made of plastic.

4. The crude gas washing tower for facilitating wastewater discharge according to claim 1, characterized in that: The bottom of the annular airbag (541) is connected to the first pipe opening (531).

5. The crude gas washing tower for facilitating wastewater discharge according to claim 1, characterized in that: The annular airbag (541) is made of rubber.

6. The crude gas washing tower for facilitating wastewater discharge according to claim 1, characterized in that: An air valve (543) is provided on the annular airbag (541).

7. The crude gas washing tower for facilitating wastewater discharge according to claim 1, characterized in that: The floating device (54) is connected to the tower body (1) via a connecting rope (8).

8. The crude gas washing tower for facilitating wastewater discharge according to claim 1, characterized in that: A filter screen (55) is provided at the first pipe opening (531).

9. The crude gas washing tower for facilitating wastewater discharge according to claim 8, characterized in that: The filter screen (55) is installed at the first pipe opening (531) via a flange.

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