CN210544306U - Sulfur loading tail gas recovery processing system - Google Patents

Abstract

The utility model discloses a sulphur loading tail gas recovery processing system for when recovery processing sulphur tank car canning liquid sulphur, avoid causing harm to human body and environment from the loading overflow tail gas that the jar mouth of sulphur tank car spills over. Specifically, when the sulfur tank car is filled with liquid sulfur, a gap between the outer pipe wall of the feeding pipe and a tank opening of the sulfur tank car is sealed; the position of the charging pipe for outputting the loading overflow tail gas is set into a double-wall structure, so that the loading overflow tail gas can flow out through a tail gas output interface on an outer pipe at the position of the double wall after flowing through the double wall, and the situation that the loading overflow tail gas cannot be discharged to influence the normal work of liquid sulfur filled in the sulfur tank truck is prevented; then the loading overflow tail gas flowing out from the tail gas output interface enters the liquid ring pump under the vacuum pumping action provided by the liquid ring pump, and then is mixed with a liquid ring formed by alkali liquor in the liquid ring pump, so that the loading overflow tail gas is purified.

Description

Sulfur loading tail gas recovery processing system

Technical Field

The utility model relates to a sulphur loading tail gas recovery processing system collects the tail gas that overflows when being applicable to sulphur loading, prevents that tail gas from overflowing scattered entering atmosphere.

Background

The sulfur must be in liquid state when loading, and the melting point of the sulfur is 119 ℃, so the loading temperature needs to be kept above 120 ℃, and the liquid sulfur can generate a large amount of harmful gases such as sulfur tail gas, hydrogen sulfide, dust and the like.

At present, harmful tail gas (a large amount of sulfur tail gas, hydrogen sulfide, dust and the like) generated by loading sulfur on a car is generally not treated. When loading, harmful tail gas often overflows and scatters into the atmosphere through the clearance between the feeding pipe and the tank opening of the sulfur tank car, and great damage is caused to human bodies and the environment.

SUMMERY OF THE UTILITY MODEL

The utility model provides a sulfur loading tail gas recovery processing system to prior art's is not enough for when handling sulfur tank car canning liquid sulphur, avoid causing harm to human body and environment from the loading overflow tail gas that the jar mouth of sulfur tank car spills over.

In order to achieve the technical purpose, the utility model adopts the following technical proposal:

the utility model provides a sulphur loading tail gas recovery processing system for when recovery processing sulphur tank car canning liquid sulphur, loading overflow tail gas that spills over from the jar mouth of sulphur tank car, including filling tube and tail gas processing apparatus, wherein:

the feeding pipe is a rigid pipe which is vertically placed and has a telescopic length, a tail gas output interface is arranged on the side wall of the feeding pipe, and the feeding pipe is arranged in a wall clamping structure at the position of the tail gas output interface;

the wall clamping structure comprises an outer pipe and an inner pipe, wherein the upper end of the inner pipe is provided with an upper pipeline joint, and the lower end of the inner pipe extends into the inner cavity of the outer pipe and is suspended; the upper end of the outer pipe is fixed with the outer wall of the inner pipe, and the lower end of the outer pipe can be in detachable connection with the tank opening of the sulfur tank truck in a sealing way;

the tail gas output interface is arranged on the side wall of the outer pipe, and the position of the tail gas output interface on the outer pipe is higher than the position of the lower end of the inner pipe;

the tail gas treatment device comprises a liquid ring pump tail gas treatment module and a tail gas post-treatment module; the tail gas treatment module of the liquid ring pump comprises a liquid ring pump, the tail gas post-treatment module comprises a cleaning tank, and alkali liquor is contained in the cleaning tank;

the liquid ring pump is characterized in that an air inlet of the liquid ring pump is communicated with the side wall of the feeding pipe through an air inlet pipeline, a liquid inlet is communicated with the cleaning tank through a liquid inlet conveying pipeline, an outlet of the liquid ring pump is communicated with the cleaning tank through an air supply pipeline, a connecting point of the liquid inlet conveying pipeline and the cleaning tank is positioned below the liquid level of the alkali liquor in the cleaning tank, and a connecting point of the air supply pipeline and the cleaning tank is positioned above the liquid level of the alkali liquor in the cleaning tank;

the cleaning tank is provided with a blow-off pipe at the bottom of the tank, and a blow-off valve is arranged on the blow-off pipe.

As a further improvement of the sulfur loading tail gas recovery and treatment system, the tail gas treatment device further comprises a tail gas pretreatment module; the tail gas pretreatment module comprises an air suction pipeline;

the air suction pipeline is a steam jacket sleeve and is provided with an inclined section and a vertical section;

the inclination angle of the inclined section is less than 90 degrees, the upper end of the inclined section is communicated with the side wall of the feeding pipe, the lower end of the inclined section is communicated with one end of the vertical section, and a collecting valve is assembled at the position adjacent to the other end of the vertical section;

the vertical section is communicated with the air inlet pipeline through a tee joint;

the interlayer of the air suction pipeline can input steam through the steam conveying pipeline.

As a further improvement of the sulfur loading tail gas recovery treatment system, the inclined section of the air suction pipeline is provided with two sections, namely a front section and a rear section, the front section communicated with the side wall of the feeding pipe adopts a steam jacket metal hose, and the rear section is a steam jacket stainless steel pipe; the vertical section of the air suction pipeline is also a steam jacket stainless steel pipe.

As a further improvement of the sulfur loading tail gas recovery and treatment system, the feed pipe comprises a fixed main pipe and a telescopic feed pipe;

the telescopic charging pipe comprises a fixed sleeve and a movable sleeve, the fixed main pipe is an inner pipe, and the telescopic charging pipe is an outer pipe;

the upper end of the fixed main pipe is fixed with the liquid sulfur conveying pipeline, the lower end of the fixed main pipe extends into the fixed sleeve, and an annular gap with the length of d can be formed between the outer wall of the fixed main pipe and the inner wall of the fixed sleeve; and the pipe wall of the fixed main pipe at the position corresponding to the annular gap is provided with a tail gas output interface;

the upper end of the fixed sleeve is fixed with the outer pipe wall of the fixed main pipe, and the lower end of the fixed sleeve extends into the movable sleeve;

the movable sleeve and the outer pipe wall of the fixed sleeve are provided with a sliding pair, and the movable sleeve and the fixed sleeve form sealing connection at the position of the sliding pair; in addition, the outer wall surface of the movable sleeve close to the lower end is provided with a sealing piece which can be in sealing connection with the tank opening of the sulfur tank truck.

As a further improvement of the sulfur loading tail gas recovery and treatment system, the movable sleeve is provided with a sliding pair between the inner pipe wall adjacent to the upper end and the outer pipe wall of the fixed sleeve.

As a further improvement of the sulfur loading tail gas recovery treatment system, the liquid sulfur conveying pipeline is a steam jacket stainless steel pipe, and steam can flow into an interlayer of the liquid sulfur conveying pipeline;

a sulfur collecting cover is arranged below the orifice of the feeding pipe; the sulfur collecting cover is fixed with the outer wall of the feeding pipe through a transverse movable mechanism;

when the feeding pipe is required to be matched and connected with the tank opening of the sulfur tank truck, the sulfur collecting cover is horizontally moved to the side of the feeding pipe by the driving of the transverse movable mechanism;

when the charging pipe finishes working, the sulfur collecting cover is moved to the position right below the charging pipe through the driving of the transverse movable mechanism.

As a further improvement of the sulfur loading tail gas recovery and treatment system, the blow-off pipe bypass is communicated with the flushing pipe; a flushing valve is arranged on the flushing pipe; a liquid inlet valve is arranged on the liquid inlet conveying pipeline; the air supply pipeline is provided with an air supply valve.

Another technical object of the utility model is to provide a sulfur loading tail gas recovery processing system, which is used for processing the loading overflow tail gas overflowing from the tank mouth of the sulfur tank car when the sulfur tank car is used for loading liquid sulfur, and comprises a charging pipe, a tail gas processing device and a control box; wherein:

the feeding pipe is vertically arranged and comprises a fixed main pipe and a telescopic feeding pipe; the telescopic charging pipe comprises a fixed sleeve and a movable sleeve;

the upper end of the fixed main pipe is provided with an upper pipeline interface which can be fixed with a liquid sulfur conveying pipeline, the lower end of the fixed main pipe extends into the fixed sleeve, and an annular gap with the length of d can be formed between the outer wall of the fixed main pipe and the inner wall of the fixed sleeve; a tail gas output interface is arranged on the pipe wall of the fixed main pipe at the position corresponding to the annular gap, a pressure sensor for sensing the pressure of the tank opening of the sulfur tanker is arranged on the fixed main pipe above the tail gas output interface, and the pressure value detected by the pressure sensor is fed back to the control box through a transmission line;

the upper end of the fixed sleeve is fixed with the outer pipe wall of the fixed main pipe, and the lower end of the fixed sleeve extends into the movable sleeve;

the movable sleeve and the outer pipe wall of the fixed sleeve are provided with a sliding pair, and the movable sleeve and the fixed sleeve form sealing connection at the position of the sliding pair;

the outer wall surface of the movable sleeve close to the lower end is provided with a sealing piece which can be in sealing connection with a tank opening of the sulfur tank truck; meanwhile, the movable sleeve is connected with the power output end of the servo motor; the movable sleeve can stretch and retract relative to the fixed sleeve under the power action of the servo motor;

the tail gas treatment device comprises a tail gas pretreatment module, a liquid ring pump tail gas treatment module and a tail gas aftertreatment module;

the tail gas pretreatment module comprises an air suction pipeline; the tail gas treatment module of the liquid ring pump comprises a liquid ring pump, the tail gas post-treatment module comprises a cleaning tank, and alkali liquor is contained in the cleaning tank;

the air suction pipeline is a steam jacket sleeve and is provided with an inclined section and a vertical section;

the inclination angle of the inclined section is less than 90 degrees, the upper end of the inclined section is communicated with the side wall of the charging pipe through a tail gas output interface, the lower end of the inclined section is communicated with one end of the vertical section, and a collecting valve is assembled at the position adjacent to the other end of the vertical section;

the vertical section is communicated with the air inlet pipeline through a tee joint;

the interlayer of the air suction pipeline can input steam through the steam conveying pipeline;

the liquid ring pump is characterized in that an air inlet of the liquid ring pump is communicated with one interface of a three-way pipe on an air suction pipeline through an air inlet pipeline, a liquid inlet is communicated with a cleaning tank through a liquid inlet conveying pipeline, an outlet of the liquid ring pump is communicated with the cleaning tank through an air supply pipeline, the connecting point of the liquid inlet conveying pipeline and the cleaning tank is positioned below the liquid level of alkali liquor in the cleaning tank, and the connecting point of the air supply pipeline and the cleaning tank is positioned above the liquid level of the alkali liquor in the cleaning tank;

the tank bottom of the cleaning tank is provided with a drain pipe, and a drain valve is arranged on the drain pipe; the blow-off pipe bypass is communicated with the flushing pipe, and a flushing valve is arranged on the flushing pipe; in addition, a high-level liquid level switch, a low-level liquid level switch and a pH sensor for detecting the pH value of alkali liquor in the cleaning tank are arranged in the cleaning tank; when the liquid level of the alkali liquor in the cleaning tank triggers the high-level liquid level switch or the low-level liquid level switch, the corresponding liquid level signal can be fed back to the control box; the pH value signal of the alkali liquor in the cleaning tank, which is detected by the pH sensor, can be fed back to the control box;

the control box automatically controls the servo motor to drive the movable sleeve to slide along the fixed sleeve after receiving the sulfur tank truck in-place signal until the sealing piece at the end part of the movable sleeve is in sealing connection with the tank opening of the sulfur tank truck, and stops the servo motor; the liquid level control device automatically controls the liquid ring pump to stop and send an alarm signal by receiving a liquid level signal fed back by the high-level liquid level switch or the low-level liquid level switch; the working condition of the liquid ring pump is automatically controlled by receiving the pressure value fed back by the pressure sensor and comparing the pressure value with a preset pressure threshold value in the control box.

According to foretell technical scheme, for prior art, the utility model has the advantages of as follows:

1. the utility model provides a charging pipe, which can avoid the overflow tail gas of loading from the tank mouth of the sulfur tank car by the sealing connection with the tank mouth of the sulfur tank car when the sulfur is loaded; however, during the canning process, the loading overflow tail gas is continuously generated, the pressure of the loading overflow tail gas at the position of the tank opening of the sulfur tank car is continuously increased, and if the loading overflow tail gas is not led out in a smooth mode, the sulfur liquid can be influenced to be smoothly filled into the sulfur tank car; therefore, the filling tube is with sulfur tank car's jar mouth sealing connection is the first step, and the utility model discloses a second step then how to derive loading overflow tail gas from the filling tube, does not influence the canning of liquid sulfur simultaneously, for this reason, the utility model discloses set up tail gas output interface at the lateral wall of filling tube, the filling tube sets to double-layered wall structure in the position department at tail gas output interface place simultaneously to can make loading overflow tail gas can flow through behind the double-layered wall, through the tail gas output interface outflow on the outer tube of double-layered wall position department, prevent that loading overflow tail gas from unable the discharging, influence the normal work of sulfur tank car canning liquid sulfur. Therefore, the utility model discloses solve the problem of the tail gas leakage of loading overflow from the source, for subsequent tail gas recovery processing to reach tail gas purification, prevent that air pollution, harm health's purpose provide the basis.

2. The utility model adopts the high-speed rotating liquid ring formed by the alkali liquor and formed in the pump cavity by the liquid ring pump aiming at the particularity of the tail gas of the loading overflow from the tank mouth of the sulfur tank car when loading sulfur, mixing with the truck-loading overflow tail gas pumped by the vacuum pumping capacity of the liquid ring pump, on one hand, the sulfur steam in the truck-loading overflow tail gas can be cooled, so as to solidify and form sulfur solid (powder), on the other hand, the toxic gas hydrogen sulfide in the loading overflow tail gas can fully contact with the liquid ring, the toxic gas hydrogen sulfide and the liquid ring can almost instantaneously generate chemical reaction, thereby obtaining nontoxic products, and in conclusion, the liquid ring pump basically eliminates the toxicity of the loading overflow tail gas and then further performs secondary purification of the cleaning tank, so that the gas discharged from the cleaning tank meets the environmental protection requirement, the sulfur is deposited to the bottom of the cleaning tank and is finally discharged and collected through a sewage discharge pipeline assembled at the bottom of the tank.

Additionally, the utility model discloses still to the particularity of loading overflow tail gas, before loading overflow tail gas gets into the liquid ring pump, cool off in the pipeline of breathing in earlier for partial sulphur steam in the loading overflow tail gas can solidify for sulphur, and the maintenance to follow-up each equipment has meaning very.

To sum up, can understand the utility model discloses harmful tail gas, hydrogen sulfide, steam, dust etc. that can produce the sulphur loading are effectively handled, no longer discharge the atmosphere.

Drawings

FIG. 1 is a schematic structural view of a sulfur loading tail gas recovery processing system of the present invention;

FIG. 2 is a schematic view of the feed tube of FIG. 1;

FIG. 3 is a schematic view of the loading tube of FIG. 2 in a first extreme position;

FIG. 4 is a schematic view of the loading tube of FIG. 2 in a second extreme position;

FIG. 5 is a schematic view of the structure of a feed tube equipped with a sulfur-collecting cap (the feed tube is in operation);

FIG. 6 is a schematic view showing the structure of a charging tube equipped with a sulfur-collecting cap (after charging of the charging tube is completed);

fig. 7 is a schematic structural diagram of the tail gas recovery device (excluding the tail gas pretreatment module) according to the present invention;

fig. 8 is a schematic structural diagram of a tail gas pretreatment module in the tail gas recovery device of the present invention;

in the figure: 11-sealing the air bag; 12-a feed tube; 12-1, an active cannula; 12-2, sealing rings; 12-3, fixing the sleeve; 12-4, a tail gas output interface; 13-a pressure sensor; 14-a connecting flange; 15-a servo motor; 16-casing gap; 17-fixed main pipe; 2-a liquid sulfur transfer pipeline; 3-an air suction duct; 31-a three-way joint; 32-a collection valve; 34-an inclined section; 35-a vertical section; 41-air supply valve; 42-liquid ring pump; 43-liquid delivery valve; 44-a filter; 45-air supply pipe; 46-an air inlet duct; 51-a flush valve; 52-a blowdown valve; 53-washing tank; 54-alkali liquor; 55-a recovery hood; 61-sulfur collecting cover, 62-guide rail; 7-sulfur tank car.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention. Unless specifically stated otherwise, the relative arrangement of the components and steps, expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may also be oriented in other different ways (rotated 90 degrees or at other orientations).

The utility model discloses when the basis of production lies in 7 canned liquid sulfur of current sulfur tank car, be gone on under the circumstances of no protection, specifically be: the loading overflow tail gas generated during canning can be discharged into the atmosphere from the tank opening of the sulfur tank truck 7 without obstruction. Therefore, the technical idea of the utility model is to provide a feed pipe 12, so that when the sulfur tank truck 7 is filled with liquid sulfur, the outer pipe wall of the feed pipe 12 can be sealed with the gap between the tank mouths of the sulfur tank truck 7; the position of the charging pipe 12 for outputting the loading overflow tail gas is set to be a sandwich wall structure, so that the loading overflow tail gas can flow out through a tail gas output interface 12-4 on the outer pipe at the position of the sandwich wall after flowing through the sandwich wall, and the loading overflow tail gas is prevented from being discharged without any way, and the normal work of liquid sulfur filled in the sulfur tank truck 7 is influenced; then, the loading overflow tail gas flowing out of the tail gas output interface 12-4 enters the liquid ring pump 42 under the vacuum pumping action provided by the liquid ring pump 42 and is further mixed with a liquid ring formed by alkali liquor in the liquid ring pump 42, so that sulfur steam in the loading overflow tail gas is cooled and solidified into sulfur solid, hydrogen sulfide reacts with the alkali liquor to form a non-toxic product, and finally the sulfur solid, the non-toxic product and the residual tail gas in the loading overflow tail gas are discharged into the cleaning tank 53 from the outlet of the liquid ring pump 42 for further purification treatment; in the cleaning tank 53, the gas is finally adsorbed by the carbon tank at the top of the cleaning tank 53 and then discharged to the atmosphere, and the sulfur solid is deposited at the bottom of the cleaning tank 53 and finally discharged to a collecting container through a sewage discharge pipeline at the bottom of the cleaning tank 53.

According to the above technical idea, the utility model provides a sulfur loading tail gas recovery processing system for when collecting 7 jar liquid sulfur of sulfur tank car, the loading overflow tail gas that overflows from the jar mouth of sulfur tank car 7, as shown in fig. 1 to 8, including filling tube 12 and tail gas processing apparatus, wherein:

the feed pipe 12 is a rigid pipe which is vertically placed and has a telescopic length, as shown in fig. 2-4, a tail gas output interface 12-4 is arranged on the side wall, and the feed pipe 12 is arranged at the position of the tail gas output interface 12-4 to form a wall clamping structure; the wall clamping structure comprises an outer pipe and an inner pipe, wherein the upper end of the inner pipe is provided with an upper pipeline joint so as to be fixed with the liquid sulfur conveying pipeline 2, and the lower end of the inner pipe extends into the inner cavity of the outer pipe and is suspended; the upper end of the outer pipe is fixed with the outer wall of the inner pipe, and the lower end of the outer pipe can be in detachable connection with the tank opening of the sulfur tank truck in a sealing way; the tail gas output interface 12-4 is arranged on the side wall of the outer pipe, and the position of the tail gas output interface on the outer pipe is higher than the position of the lower end of the inner pipe.

Specifically, the feed pipe 12 comprises a fixed main pipe 17 and a telescopic feed pipe 12; the fixed main pipe 17 is an inner pipe, and the telescopic feeding pipe 12 is an outer pipe and comprises a fixed sleeve 12-3 and a movable sleeve 12-1. The upper end of the main fixing pipe 17 is fixed with the liquid sulfur conveying pipeline 2, the lower end of the main fixing pipe extends into the fixing sleeve 12-3, and an annular gap with the length d can be formed between the outer wall of the main fixing pipe 17 and the inner wall of the fixing sleeve 12-3; and the pipe wall of the fixed main pipe 17 at the position corresponding to the annular gap is provided with a tail gas output interface 12-4; the upper end of the fixed sleeve 12-3 is fixed with the outer pipe wall of the fixed main pipe 17, and the lower end of the fixed sleeve extends into the movable sleeve 12-1; a sliding pair is arranged between the movable sleeve 12-1 and the outer pipe wall of the fixed sleeve 12-3, and the movable sleeve 12-1 and the fixed sleeve 12-3 are connected in a sealing way at the position of the sliding pair; in addition, the outer wall surface of the movable sleeve 12-1 close to the lower end is provided with a sealing piece which can be connected with the tank opening of the sulfur tank truck 7 in a sealing way.

The movable sleeve 12-1 has a sliding pair between the inner tubular wall adjacent the upper end and the outer tubular wall of the stationary sleeve 12-3.

The upper end of the fixed main pipe 17 is fixed with the liquid sulfur conveying pipeline 2 through a transition pipeline; the transition pipeline is a steam jacket stainless steel hose, and steam can flow into an interlayer of the transition pipeline; a sulfur collecting cover 61 is arranged below the orifice of the feeding pipe 12; and the sulfur collecting cover 61 is fixed with the outer wall of the feeding pipe 12 through a transverse movable mechanism; when the feeding pipe 12 is required to be matched and connected with the tank opening of the sulfur tank truck 7, the sulfur collecting cover 61 is driven by the transverse movable mechanism to be translated to the side of the feeding pipe 12; when the charging pipe 12 is finished, the sulfur collecting cover 61 is moved to the position right below the charging pipe 12 by the driving of the transverse movable mechanism.

The sealing element can be a circular ring-shaped sealing ring made of fluorocarbon rubber and is fixed on the outer ring of the movable sleeve 12-1. The lower end of the sealing ring is provided with a circle of conical groove for sealing the tank opening.

The sealing element can be a corrosion-resistant air bag and is fixed on the outer ring of the movable sleeve 12-1. The can mouth is sealed by utilizing the good filling performance of the air bag.

The sealing element can also be a conical sealing ring made of fluorocarbon rubber; fixed on the outer ring of the sliding part of the charging tube 12. The whole body is conical, so that the opening of the tank can be well sealed.

The tail gas treatment device, as shown in fig. 1, 7 and 8, includes a tail gas pretreatment module, a liquid ring pump 42 tail gas treatment module and a tail gas post-treatment module; the tail gas pretreatment module comprises an air suction pipeline 3; the tail gas treatment module of the liquid ring pump 42 comprises the liquid ring pump 42, the tail gas post-treatment module comprises a cleaning tank 53, and the cleaning tank 53 is filled with alkali liquor. Wherein:

the air suction pipe 3 is a steam jacket pipe and is provided with an inclined section 34 and a vertical section 35; the inclination angle of the inclined section 34 is less than 90 degrees, the upper end of the inclined section 34 is communicated with the side wall of the charging pipe 12, the lower end is communicated with one end of the vertical section 35, and the other end of the vertical section 35 is equipped with a collecting valve 32 at the position adjacent to the other end; the vertical section 35 is communicated with an air inlet pipeline 46 through a mounting tee joint 31; the sandwich of the suction line 3 can be supplied with steam via a steam supply line.

The inclined section 34 and the vertical section 35 of the air suction pipeline 3 are both steam jacket stainless steel pipes.

The liquid ring pump 42, the air inlet passes through the lateral wall intercommunication of admission line 46 and filling tube 12, and the inlet passes through feed liquor pipeline and washs jar 53 intercommunication, and the export then feeds through pipeline 45 and washing jar 53 intercommunication through filtering, and feed liquor pipeline is located below the liquid level of washing jar 53 interior alkali lye with the hookup point who washs jar 53, and filters pipeline 45 and the hookup point who washs jar 53 and is located above the liquid level of washing jar 53 interior alkali lye.

The cleaning tank 53 is provided with a drain pipe at the bottom of the tank, and the drain pipe is provided with a drain valve 52.

As a further improvement of the sulfur loading tail gas recovery and treatment system, the blow-off pipe bypass is communicated with the flushing pipe; a flushing valve 51 is arranged on the flushing pipe; a liquid inlet valve is arranged on the liquid inlet conveying pipeline; the filter air supply pipe 45 is provided with an air supply valve 41.

According to foretell sulphur car tail gas collection system, the utility model provides a sulphur loading tail gas collection method, including following step:

(1) after the sulfur tank truck 7 stops at a specified position, the control box controls the servo motor 15 to drive the movable sleeve 12-1 of the feeding pipe 12 to slide, so that a sealing piece at the end part of the movable sleeve 12-1 can be in sealing connection with the tank opening of the sulfur tank truck 7, and the connection of a sulfur conveying pipeline, a tail gas treatment device and the tank opening of the sulfur tank truck 7 is completed;

(2) liquid sulfur conveyed by a sulfur conveying pipeline sequentially enters a sulfur tank truck 7 through a feed pipe 12 and a tank opening of the sulfur tank truck 7, and simultaneously, a large amount of produced truck-loading overflow tail gas reversely enters the feed pipe 12 and flows into an annular gap formed by a feed main pipe of the feed pipe 12 and a fixed sleeve 12-3 of the feed pipe 12, and then enters an air suction pipeline 3 of a tail gas treatment device through a tail gas output interface 12-4 arranged on the pipe wall of the fixed sleeve 12-3 at a position corresponding to the annular gap; meanwhile, a sensing head of the pressure sensor 13 arranged in the annular gap can feed back a detected pressure signal to the control box, the control box starts the liquid ring pump 42 in the tail gas treatment device according to the pressure signal, and the rotating speed of the liquid ring pump 42 is automatically adjusted according to the size of the pressure signal;

(3) the loading overflow tail gas enters the liquid ring pump 42 after passing through the air suction pipeline 3, the tee joint arranged on the air suction pipeline 3 and the air inlet pipeline 46 in sequence under the action of the vacuum suction force of the liquid ring pump 42; in the process, after the loading overflow tail gas enters the air suction pipeline 3, most of sulfur steam in the loading overflow tail gas is precooled and cooled to be sulfur which is solidified on the pipe wall of the air suction pipeline 3, and the rest loading overflow tail gas is input into the liquid ring pump 42 through the three-way pipe on the air suction pipeline 3 and the air inlet pipeline 46;

(4) the alkali liquor sucked from the cleaning tank 53 through the liquid inlet in the liquid ring pump 42 forms a liquid ring, and reacts with the toxic gas hydrogen sulfide in the truck-loading overflow tail gas sucked from the gas inlet pipeline 46 through the gas inlet to generate a nontoxic product; meanwhile, the sulfur steam in the tail gas of the loading flow is further cooled and solidified into sulfur; the nontoxic product, sulfur and the rest small amount of loading overflow tail gas finally pass through the outlet of the liquid ring pump 42 and enter the cleaning tank 53 through the air feed channel;

(5) the alkaline solution in the cleaning tank 53 further treats the loading overflow tail gas introduced into the gas feed channel; the gas is further purified by a carbon tank above the cleaning tank 53 and then discharged; the sulfur is deposited at the bottom of the cleaning tank 53 and is finally discharged into the collection hood through a drain.

As a further improvement of the sulfur loading tail gas collecting method, the liquid level of the alkali liquor in the cleaning tank 53 is equivalent to the center of the pump cavity of the liquid ring pump 42; in the step (3), heating steam is periodically input into the interlayer of the air suction pipeline 3, so that sulfur solids attached to the pipe wall of the air suction pipeline 3 are melted and finally flow out of the sulfur collecting cover below the outlet of the air suction pipeline 3 through the vertical section 35 of the air suction pipeline 3.

A specific embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1, in this embodiment, the sulfur loading tail gas recovery processing system includes three parts, which are a feeding pipe 12, a tail gas processing device and a control box; wherein:

the feed pipe 12 is vertically arranged and comprises a fixed main pipe 17 and a telescopic feed pipe 12; the retractable charging tube 12 comprises a fixed sleeve 12-3 and a movable sleeve 12-1; the upper end of the main fixed pipe 17 is fixed with the liquid sulfur conveying pipeline 2, the lower end of the main fixed pipe extends into the fixed sleeve 12-3, and an annular gap with the length d can be formed between the outer wall of the main fixed pipe 17 and the inner wall of the fixed sleeve 12-3; a tail gas output interface 12-4 is arranged on the pipe wall of the fixed main pipe 17 at the position corresponding to the annular gap, a pressure sensor 13 for sensing the pressure of the tank opening of the sulfur tank truck 7 is arranged on the fixed main pipe 17 above the tail gas output interface 12-4, and the pressure value detected by the pressure sensor 13 is fed back to the control box through a transmission line; the upper end of the fixed sleeve 12-3 is fixed with the outer pipe wall of the fixed main pipe 17, and the lower end of the fixed sleeve extends into the movable sleeve 12-1; a sliding pair is arranged between the movable sleeve 12-1 and the outer pipe wall of the fixed sleeve 12-3, and the movable sleeve 12-1 and the fixed sleeve 12-3 are connected in a sealing way at the position of the sliding pair; the outer wall surface of the movable sleeve 12-1 close to the lower end is provided with a sealing piece which can be in sealing connection with the tank opening of the sulfur tank truck 7; meanwhile, the movable sleeve 12-1 is connected with the power output end of the servo motor 15; the movable sleeve 12-1 can extend and contract relative to the fixed sleeve 12-3 under the power action of the servo motor 15.

The tail gas treatment device comprises a tail gas pretreatment module, a liquid ring pump 42 tail gas treatment module and a tail gas aftertreatment module.

The tail gas pretreatment module comprises an air suction pipeline 3; the tail gas treatment module of the liquid ring pump 42 comprises the liquid ring pump 42, the tail gas post-treatment module comprises a cleaning tank 53, and the cleaning tank 53 is filled with alkali liquor.

The suction pipe 3 is a steam jacket pipe and is provided with an inclined section 34 and a vertical section 35; the inclination angle of the inclined section 34 is less than 90 degrees, the upper end of the inclined section 34 is communicated with the side wall of the charging pipe 12, the lower end is communicated with one end of the vertical section 35, and the other end of the vertical section 35 is equipped with a collecting valve 32 at the position adjacent to the other end; the vertical section 35 is communicated with an air inlet pipeline 46 through a mounting tee joint 31; the interlayer of the air suction pipeline 3 can input steam through a steam conveying pipeline; the air inlet of the liquid ring pump 42 is communicated with a connector of a three-way pipe on the air suction pipeline 3 through an air inlet pipeline 46, the liquid inlet is communicated with the cleaning tank 53 through a liquid inlet conveying pipeline, the outlet is communicated with the cleaning tank 53 through a filtering air supply pipeline 45, the connecting point of the liquid inlet conveying pipeline and the cleaning tank 53 is positioned below the liquid level of the alkali liquor in the cleaning tank 53, and the connecting point of the filtering air supply pipeline 45 and the cleaning tank 53 is positioned above the liquid level of the alkali liquor in the cleaning tank 53.

The bottom of the cleaning tank 53 is provided with a sewage discharge pipe, and the sewage discharge pipe is provided with a sewage discharge valve 52; the sewage discharge pipe bypass is communicated with the flushing pipe, and the flushing valve 51 is arranged on the flushing pipe; in addition, a high-level liquid level switch, a low-level liquid level switch and a pH sensor for detecting the pH value of the alkali liquor in the cleaning tank 53 are arranged in the cleaning tank 53; when the liquid level of the alkali liquor in the cleaning tank 53 triggers the high-level liquid level switch or the low-level liquid level switch, the corresponding liquid level signal can be fed back to the control box; the pH value signal of the alkali liquor in the cleaning tank 53 detected by the pH sensor can be fed back to the control box.

After the control box receives the arrival signal of the sulfur tanker 7, the servo motor 15 is automatically controlled to drive the movable sleeve 12-1 to slide along the fixed sleeve 12-3 until the sealing piece at the end part of the movable sleeve 12-1 is in sealing connection with the tank opening of the sulfur tanker 7, and the servo motor 15 is stopped; by receiving a liquid level signal fed back by the high-level liquid level switch or the low-level liquid level switch, the liquid ring pump 42 is automatically controlled to stop and send an alarm signal; the working condition of the liquid ring pump 42 is automatically controlled by receiving the pressure value fed back by the pressure sensor 13 and comparing the pressure value with a preset pressure threshold value in the control box.

In order to prevent the liquid sulfur in the feeding pipe 12 from dripping after the feeding of the feeding pipe 12 is finished, the utility model is provided with a sulfur collecting cover 61; as shown in fig. 5 and 6, the sulfur collection cover 61 is assembled by 304 steel plates, is pulled by the servo motor 15, and can move on the guide rail 62 in a translation manner; the guide rails 62 are fixed to the slidable section of the filling tube 12.

After the charging procedure is started, the collecting cover is translated out of the charging area of the charging pipe 12; after the feeding is finished, the feeding pipe 12 returns to the initial position, and then the collecting cover is translated to the position below the feeding pipe 12; for collecting the sulfur droplets dripping from the feeding pipe 12.

Specifically, the method comprises the following steps:

A. liquid sulfur conveying pipeline 2: the tail end of the steam jacket pipeline is vertically arranged.

B. Feed tube 12 (excluding transition hose): as shown in fig. 2, 3 and 4, the device comprises an upper fixed main pipe 17 and a lower retractable charging pipe 12. The upper fixed main pipe 17 is butted with the liquid sulfur conveying pipeline 2 by a flange; the lower retractable feed tube 12 is drawn by a servo motor to slide vertically. And a corrosion-resistant sealing ring (a sealing air bag 11 or other sealing type) is arranged on the outer ring of the slidable part of the charging pipe 12 and used for sealing the charging opening after the charging pipe 12 extends into the charging opening of the tank.

C. An air suction pipeline: is connected with a tail gas output interface 12-4 arranged on the side wall of the upper part of the charging pipe 12; the steam jacket is a stainless steel pipe, and the whole body is inclined downwards; the middle vertical part is provided with a three-way joint 31, one end of the three-way joint 31 is vertically downward, and the other end is connected to the air suction port of the liquid ring pump 42. The vertical section 35 is a removable section with a collection valve 32 at the lower end. The air suction pipe is not communicated with steam at ordinary times, and the steam is periodically communicated to melt and discharge sulfur solids attached to the tank to the collecting cover at the tail end of the pipe.

D. The cleaning tank 53: the material of the tank body is 304 stainless steel plates; a concave bottom, the bottom of which is provided with a discharge port and a relief valve; when the deposition of sulfur at the bottom of the tank is more, the discharge valve is opened to discharge the sulfur-adding sulfur mixed liquid to the sulfur pit. The discharge pipe is connected with a 4-7bar compressed air flushing pipeline and used for solving the problem of blockage of the discharge pipe. The tank is filled with cleaning liquid (NaOH liquid), and the liquid level is equal to the central position of the liquid ring pump 42; the tank body is provided with a liquid level meter, an explosion-proof liquid level switch and a pH sensor. The side wall of the lower part of the tank body is connected with a pipeline to a liquid feeding port of the liquid ring pump 42; the liquid feeding valve 43 and the filter 44 are connected to the liquid feeding line. The upper side wall of the tank is connected with a pipeline to the discharge port of the liquid ring pump 42. The top of the tank body is provided with an activated carbon tank, and the exhaust port of the activated carbon tank is used as the exhaust port of the whole cleaning tank 53.

The working principle of the embodiment is as follows:

after the tank car stops at the designated position, the system controls the servo motor 15 to drive the charging pipe 12 to be successfully butted and sealed with the tank opening. The system starts to feed, sulfur liquid is injected into the tank car, and simultaneously a large amount of tail gas is generated to enter the feed pipe 12. The system controls the liquid ring pump 42 to enter a running state, and sulfur tail gas generated during feeding can be sucked into the exhaust pipeline. The pressure sensor 13 at the upper end of the feeding pipe 12 transmits a signal to the control box, and the control box controls the rotating speed of the liquid ring pump 42 according to the pressure. The tail gas in the exhaust pipeline enters the liquid ring pump 42, is mixed with the liquid (NaOH liquid) in the pump cavity of the liquid ring pump 42 and is discharged into the cleaning tank 53. The sulfur steam is cooled to become solid precipitate and the bottom of the cleaning tank 53, the hydrogen sulfide gas is neutralized by the alkali liquor, and a small amount of non-neutralized tail gas is adsorbed by the activated carbon in the carbon tank. The sulfur steam can be partially cooled to become solid in the air suction pipeline in the discharging process, the air suction pipeline can be periodically heated, and the sulfur in the pipeline is liquefied and is discharged from the air suction pipe by self weight.

The liquid in the cleaning tank 53 is filtered by the filter 44 and then enters the pump chamber of the liquid ring pump 42. The liquid level in the wash tank 53 corresponds to the central position in the pump chamber. Either too low or too high a level can affect the proper use of the liquid ring pump 42. Therefore, a liquid level high and low float switch is arranged in the cleaning tank 53, and the liquid level high and low signals can send out alarm and pump stop signals to the system.

Claims (8)

1. The utility model provides a sulphur loading tail gas recovery processing system for when recovery processing sulphur tank car canning liquid sulphur, the loading overflow tail gas that spills over from the jar mouth of sulphur tank car, its characterized in that includes filling tube and tail gas processing apparatus, wherein:

the feeding pipe is a rigid pipe which is vertically placed and has a telescopic length, a tail gas output interface is arranged on the side wall of the feeding pipe, and the feeding pipe is arranged in a wall clamping structure at the position of the tail gas output interface;

the wall clamping structure comprises an outer pipe and an inner pipe, wherein the upper end of the inner pipe is provided with an upper pipeline joint, and the lower end of the inner pipe extends into the inner cavity of the outer pipe and is suspended; the upper end of the outer pipe is fixed with the outer wall of the inner pipe, and the lower end of the outer pipe can be in detachable connection with the tank opening of the sulfur tank truck in a sealing way;

the tail gas output interface is arranged on the side wall of the outer pipe, and the position of the tail gas output interface on the outer pipe is higher than the position of the lower end of the inner pipe;

the tail gas treatment device comprises a liquid ring pump tail gas treatment module and a tail gas post-treatment module; the tail gas treatment module of the liquid ring pump comprises a liquid ring pump, the tail gas post-treatment module comprises a cleaning tank, and alkali liquor is contained in the cleaning tank;

the liquid ring pump is characterized in that an air inlet of the liquid ring pump is communicated with the side wall of the feeding pipe through an air inlet pipeline, a liquid inlet is communicated with the cleaning tank through a liquid inlet conveying pipeline, an outlet of the liquid ring pump is communicated with the cleaning tank through an air supply pipeline, a connecting point of the liquid inlet conveying pipeline and the cleaning tank is positioned below the liquid level of the alkali liquor in the cleaning tank, and a connecting point of the air supply pipeline and the cleaning tank is positioned above the liquid level of the alkali liquor in the cleaning tank; the cleaning tank is provided with a blow-off pipe at the bottom of the tank, and a blow-off valve is arranged on the blow-off pipe.

2. The sulfur loading tail gas recovery and treatment system according to claim 1, wherein the tail gas treatment device further comprises a tail gas pretreatment module; the tail gas pretreatment module comprises an air suction pipeline;

the air suction pipeline is a steam jacket sleeve and is provided with an inclined section and a vertical section;

the inclination angle of the inclined section is less than 90 degrees, the upper end of the inclined section is communicated with the side wall of the feeding pipe, the lower end of the inclined section is communicated with one end of the vertical section, and a collecting valve is assembled at the position adjacent to the other end of the vertical section;

the vertical section is communicated with the air inlet pipeline through a tee joint;

the interlayer of the air suction pipeline can input steam through the steam conveying pipeline.

3. The sulfur loading tail gas recovery and treatment system according to claim 2, wherein the inclined section and the vertical section of the air suction pipeline are both steam jacket stainless steel pipes.

4. The sulfur-loaded tail gas recovery and treatment system according to claim 2, wherein the feed pipe comprises a fixed main pipe and a telescopic feed pipe, the fixed main pipe is an inner pipe, and the telescopic feed pipe is an outer pipe;

the telescopic charging pipe comprises a fixed sleeve and a movable sleeve;

the upper end of the fixed main pipe is fixed with the liquid sulfur conveying pipeline, the lower end of the fixed main pipe extends into the fixed sleeve, and an annular gap with the length of d can be formed between the outer wall of the fixed main pipe and the inner wall of the fixed sleeve; and the pipe wall of the fixed main pipe at the position corresponding to the annular gap is provided with a tail gas output interface;

the upper end of the fixed sleeve is fixed with the outer pipe wall of the fixed main pipe, and the lower end of the fixed sleeve extends into the movable sleeve;

the movable sleeve and the outer pipe wall of the fixed sleeve are provided with a sliding pair, and the movable sleeve and the fixed sleeve form sealing connection at the position of the sliding pair; in addition, the outer wall surface of the movable sleeve close to the lower end is provided with a sealing piece which can be in sealing connection with the tank opening of the sulfur tank truck.

5. The sulfur truck tail gas recovery processing system of claim 4, wherein the movable sleeve has a sliding pair between an inner pipe wall adjacent to the upper end and an outer pipe wall of the fixed sleeve.

6. The sulfur loading tail gas recovery and treatment system according to claim 4, wherein the liquid sulfur conveying pipeline is a steam jacket stainless steel pipe, and steam can flow into an interlayer of the liquid sulfur conveying pipeline;

a sulfur collecting cover is arranged below the orifice of the feeding pipe; the sulfur collecting cover is connected with the power output end of a transverse movable mechanism;

when the feeding pipe is required to be matched and connected with the tank opening of the sulfur tank truck, the sulfur collecting cover is horizontally moved to the side of the feeding pipe by the driving of the transverse movable mechanism;

when the charging pipe finishes working, the sulfur collecting cover is moved to the position right below the charging pipe through the driving of the transverse movable mechanism.

7. The sulfur loading tail gas recovery and treatment system according to claim 4, wherein the blow-off pipe is communicated with the flushing pipe by a bypass; a flushing valve is arranged on the flushing pipe;

a liquid inlet valve is arranged on the liquid inlet conveying pipeline;

the air supply pipeline is provided with an air supply valve.

8. A sulfur loading tail gas recovery processing system is used for processing loading overflow tail gas overflowing from a tank opening of a sulfur tank car when liquid sulfur is filled in the sulfur tank car, and is characterized by comprising a feeding pipe, a tail gas processing device and a control box; wherein:

the feeding pipe is vertically arranged and comprises a fixed main pipe and a telescopic feeding pipe; the telescopic charging pipe comprises a fixed sleeve and a movable sleeve;

the upper end of the fixed main pipe is provided with an upper pipeline interface which can be fixed with a liquid sulfur conveying pipeline, the lower end of the fixed main pipe extends into the fixed sleeve, and an annular gap with the length of d can be formed between the outer wall of the fixed main pipe and the inner wall of the fixed sleeve; a tail gas output interface is arranged on the pipe wall of the fixed main pipe at the position corresponding to the annular gap, a pressure sensor for sensing the pressure of the tank opening of the sulfur tanker is arranged on the fixed main pipe above the tail gas output interface, and the pressure value detected by the pressure sensor is fed back to the control box through a transmission line;

the upper end of the fixed sleeve is fixed with the outer pipe wall of the fixed main pipe, and the lower end of the fixed sleeve extends into the movable sleeve;

the movable sleeve and the outer pipe wall of the fixed sleeve are provided with a sliding pair, and the movable sleeve and the fixed sleeve form sealing connection at the position of the sliding pair;

the outer wall surface of the movable sleeve close to the lower end is provided with a sealing piece which can be in sealing connection with a tank opening of the sulfur tank truck; meanwhile, the movable sleeve is connected with the power output end of the servo motor; the movable sleeve can stretch and retract relative to the fixed sleeve under the power action of the servo motor;

the tail gas treatment device comprises a tail gas pretreatment module, a liquid ring pump tail gas treatment module and a tail gas aftertreatment module;

the tail gas pretreatment module comprises an air suction pipeline; the tail gas treatment module of the liquid ring pump comprises a liquid ring pump, the tail gas post-treatment module comprises a cleaning tank, and alkali liquor is contained in the cleaning tank;

the air suction pipeline is a steam jacket sleeve and is provided with an inclined section and a vertical section;

the inclination angle of the inclined section is less than 90 degrees, the upper end of the inclined section is communicated with the side wall of the charging pipe through a tail gas output interface, the lower end of the inclined section is communicated with one end of the vertical section, and a collecting valve is assembled at the position adjacent to the other end of the vertical section;

the vertical section is communicated with the air inlet pipeline through a tee joint;

the interlayer of the air suction pipeline can input steam through the steam conveying pipeline;

the liquid ring pump is characterized in that an air inlet of the liquid ring pump is communicated with one interface of a three-way pipe on an air suction pipeline through an air inlet pipeline, a liquid inlet is communicated with a cleaning tank through a liquid inlet conveying pipeline, an outlet of the liquid ring pump is communicated with the cleaning tank through an air supply pipeline, the connecting point of the liquid inlet conveying pipeline and the cleaning tank is positioned below the liquid level of alkali liquor in the cleaning tank, and the connecting point of the air supply pipeline and the cleaning tank is positioned above the liquid level of the alkali liquor in the cleaning tank;

the tank bottom of the cleaning tank is provided with a drain pipe, and a drain valve is arranged on the drain pipe; the blow-off pipe bypass is communicated with the flushing pipe, and a flushing valve is arranged on the flushing pipe; in addition, a high-level liquid level switch, a low-level liquid level switch and a pH sensor for detecting the pH value of alkali liquor in the cleaning tank are arranged in the cleaning tank; when the liquid level of the alkali liquor in the cleaning tank triggers the high-level liquid level switch or the low-level liquid level switch, the corresponding liquid level signal can be fed back to the control box; the pH value signal of the alkali liquor in the cleaning tank, which is detected by the pH sensor, can be fed back to the control box;

the control box automatically controls the servo motor to drive the movable sleeve to slide along the fixed sleeve after receiving the sulfur tank truck in-place signal until the sealing piece at the end part of the movable sleeve is in sealing connection with the tank opening of the sulfur tank truck, and stops the servo motor; the liquid level control device automatically controls the liquid ring pump to stop and send an alarm signal by receiving a liquid level signal fed back by the high-level liquid level switch or the low-level liquid level switch; the working condition of the liquid ring pump is automatically controlled by receiving the pressure value fed back by the pressure sensor and comparing the pressure value with a preset pressure threshold value in the control box.

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