A sulfur paste production waste gas drying tower

Abstract

The utility model provides a kind of sulphur ointment production waste gas drying tower, belong to sulphur ointment production waste gas treatment technical field, including spraying mechanism, the spraying component of being arranged in the inner chamber of tower body;Drying and condensing mechanism, including the hot oil pipe disc of being installed in the inner installation ring inner perimeter, the steam pipe disc of being installed in the outer installation ring outer perimeter, annular liquid collecting groove of being installed in the inner lateral wall of tower body, condensate collection pipe of being installed in the outer lateral wall of tower body, baffle of being installed in the outer perimeter of installation rod, set in the condensing coil pipe of inner chamber of tower body.The utility model is first to waste gas by spraying component and is pretreated desulfurization, in combination with the double heating of hot oil pipe disc and steam pipe disc, make waste gas drying efficiency improve, the double-layer heating structure of hot oil pipe disc and steam pipe disc, realize heat from inside to outside gradient transmission, heat energy utilization rate improves, compared with traditional single steam heating equipment reduces steam consumption, cooperate with the depth cooling of condensing coil pipe, and sulphur steam recovery rate improves.

Description

Technical Field

[0001] This utility model belongs to the field of sulfur paste production waste gas treatment technology, specifically relating to a sulfur paste production waste gas drying tower. Background Technology

[0002] The production of sulfur paste generates a large amount of sulfur-containing waste gas. This waste gas typically contains high-concentration sulfide water vapor and sulfur paste dust, and is characterized by high humidity, strong corrosiveness, and high recoverability of sulfur resources. Currently, industrial treatment of this type of waste gas mainly relies on traditional drying towers and supporting desulfurization equipment.

[0003] Traditional drying towers often employ a single heating method, resulting in uneven heat distribution and insufficient drying of the waste gas. This often leads to high moisture content in the sulfur paste, which can easily cause pipe blockages during subsequent treatment. Furthermore, due to the lack of an effective condensation and recovery structure, sulfur vapor is directly emitted with the exhaust gas, resulting in low recovery rates. This not only wastes resources but also increases the pressure on exhaust gas purification. Therefore, a new type of sulfur paste production waste gas drying tower has been developed. Utility Model Content

[0004] The purpose of this invention is to provide a drying tower for waste gas from sulfur paste production, which aims to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A sulfur paste production waste gas drying tower, comprising, The spraying mechanism includes a support column, a tower body fixedly installed on the top of the support column, a spraying assembly disposed in the inner cavity of the tower body, and an air inlet disposed on the side wall of the tower body. The drying and condensation mechanism includes an inner mounting ring fixedly installed on the inner side wall of the tower body, a hot oil pipe coil fixedly installed on the inner circumference of the inner mounting ring, an outer mounting ring fixedly installed on the outer side wall of the tower body, a steam pipe coil fixedly installed on the outer circumference of the outer mounting ring, an annular liquid collection tank fixedly installed on the inner side wall of the tower body, a condensate collection pipe fixedly installed on the outer side wall of the tower body, a support rod fixedly installed on the inner side wall of the tower body, an installation rod fixedly installed at the end of the support rod, a baffle plate fixedly installed on the outer circumference of the installation rod, a fixing ring fixedly installed on the inner side wall of the tower body, a condensation coil disposed in the inner cavity of the tower body and fixed by the fixing ring, and an exhaust port opened at the top of the tower body.

[0006] As a preferred embodiment of the present invention, the spray assembly includes a spray box disposed on the side of the support column, a spray pipe having one end connected to the spray box via a connecting pipe and the other end extending through the side wall of the tower body into its inner cavity and installed horizontally, and spray heads fixed at intervals along the length of the spray pipe on its outer periphery and facing downwards into the inner cavity of the tower body.

[0007] In a preferred embodiment of this utility model, the inlet end of the hot oil coil is located at its upper end, and the outlet end is located at its lower end. Both the inlet end and the outlet end are fixedly installed with connecting flanges for connection to the pipeline of the hot oil equipment.

[0008] In a preferred embodiment of this utility model, the inlet end of the steam coil is located at its upper end, and the outlet end is located at its lower end. Both the inlet end and the outlet end are fixedly installed with connecting flanges for connection to the pipeline of the steam equipment.

[0009] As a preferred embodiment of this utility model, the bottom of the annular liquid collection tank is provided with a slope that slopes towards its lowest point along the annular direction, so that the condensate flows along the slope of the tank bottom to the lowest point, which is connected to a condensate collection pipe, and the condensate finally flows out through the collection pipe.

[0010] As a preferred embodiment of this utility model, the baffle plate includes three plates arranged vertically at intervals along the height of the tower body, all arranged concentrically along the tower body axis; the upper two plates are large semicircles with their straight edges facing each other in a spatial radial direction, and the lowermost plate is a circle matching the inner diameter of the tower body. Each of the three plates has ventilation holes evenly distributed along the plate surface, and a gap is maintained between each plate and the inner wall of the tower body to allow condensate to flow downward along the inner wall of the tower body.

[0011] In a preferred embodiment of this utility model, the inlet end of the condenser coil is located at its upper end, and the outlet end is located at its lower end. Both the inlet end and the outlet end are fixedly installed with connecting flanges for connection to the piping of the condensing equipment.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: the exhaust gas is pretreated and desulfurized by the spray assembly, and the dual heating of the hot oil coil and the steam coil improves the drying efficiency of the exhaust gas, reducing the moisture content of the sulfur paste from 30% to below 0.8%. The double-layer heating structure of the hot oil coil and the steam coil realizes the gradient transfer of heat from the inside to the outside, improving the thermal energy utilization rate and reducing steam consumption compared with traditional single steam heating equipment. The three baffles form a deflection flow field, extending the residence time of the exhaust gas to 5-8 minutes. Combined with the deep cooling of the condenser coil, the sulfur vapor recovery rate is improved. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model; Figure 3 This is a schematic diagram of the hot oil coil and steam coil structure of this utility model; Figure 4 This is a schematic diagram of the annular liquid collection tank structure of this utility model; Figure 5 This is a schematic diagram of the baffle structure of this utility model; Figure 6 This is a schematic diagram of the condenser coil structure of this utility model.

[0014] In the diagram: 100, Spraying mechanism; 101, Support column; 102, Tower body; 103, Spraying assembly; 103a, Spray box; 103b, Spray pipe; 103c, Spray head; 200, Drying and condensing mechanism; 201, Inner mounting ring; 202, Hot oil coil; 203, Outer mounting ring; 204, Steam coil; 205, Annular collection tank; 206, Condensate collection pipe; 207, Support rod; 208, Mounting rod; 209, Baffle plate; 210, Fixing ring; 211, Condensate coil; 212, Exhaust port. Detailed Implementation

[0015] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0016] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0017] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0018] Example Reference Figures 1-6 This is an embodiment of the present invention, which provides a sulfur paste production waste gas drying tower, comprising, The spraying mechanism 100 includes a support column 101, a tower body 102 fixedly installed on the top of the support column 101, a spraying assembly 103 disposed in the inner cavity of the tower body 102, and an air inlet 104 disposed on the side wall of the tower body 102. The drying and condensation mechanism 200 includes an inner mounting ring 201 fixedly installed on the inner wall of the tower body 102, a hot oil pipe coil 202 fixedly installed on the inner circumference of the inner mounting ring 201, an outer mounting ring 203 fixedly installed on the outer wall of the tower body 102, a steam pipe coil 204 fixedly installed on the outer circumference of the outer mounting ring 203, an annular liquid collection tank 205 fixedly installed on the inner wall of the tower body 102, a condensate collection pipe 206 fixedly installed on the outer wall of the tower body 102, a support rod 207 fixedly installed on the inner wall of the tower body 102, an installation rod 208 fixedly installed at the end of the support rod 207, a baffle plate 209 fixedly installed on the outer circumference of the installation rod 208, a fixing ring 210 fixedly installed on the inner wall of the tower body 102, a condensation coil 211 disposed in the inner cavity of the tower body 102 and fixed by the fixing ring 210, and an exhaust hole 212 opened at the top of the tower body 102.

[0019] The inner mounting ring 201 is an annular steel plate, welded and fixed to the middle of the inner wall of the tower body 102; the hot oil coil 202 is wound and fixed to the inner circumference of the inner mounting ring 201, using seamless steel pipe coiling; the outer mounting ring 203 is welded to the corresponding position on the outer wall of the tower body 102, and the steam coil 204 is fixed to the outer circumference of the outer mounting ring 203 in the same way; the annular liquid collection tank 205 is welded to the lower part of the inner wall of the tower body 102; the condensate collection pipe 206 is a stainless steel pipe, one end of which is connected to the annular liquid collection tank 205, and the other end extends out of the tower body; the support rod 207 consists of 3 stainless steel rods, evenly welded to the inner wall of the tower body, and the ends of which are welded to the mounting rod 208; the baffle plate 209 is fixed to the outer circumference of the mounting rod 208; the fixing ring 210 consists of 3 annular brackets, welded to the inner wall of the tower body 102, and the condensate coil 211 is inserted and fixed inside the fixing ring 210; the exhaust port 212 is opened at the center of the top of the tower body 102 and connected to the subsequent tail gas treatment pipeline.

[0020] Specifically, the bottom of the annular liquid collection tank 205 is provided with a slope that slopes towards its lowest point along the annular direction, so that the condensate flows along the slope of the tank bottom to the lowest point, which is connected to a condensate collection pipe, and the condensate finally flows out through the collection pipe.

[0021] Furthermore, it is made of stainless steel plate welded together, with a right trapezoidal cross section, and is continuously arranged around the inner wall of the tower body 102. The bottom of the tank is set with a 5° slope from the bottom of the ring direction to the lowest point, and the joint is welded at the lowest point. The condensate collection pipe is a 206 stainless steel pipe, with one end welded to the joint and the other end extending out of the tower body and connected to the sulfur paste condensate storage tank. A ball valve is installed on the pipeline to control the discharge.

[0022] Preferably, the baffle 209 includes three plates arranged vertically at intervals along the height of the tower body 102, all arranged concentrically along the tower body axis; the upper two plates are large semicircles with their straight edges facing each other radially in space, and the lowermost plate is a circle matching the inner diameter of the tower body. Each of the three plates has ventilation holes evenly distributed along the plate surface, and a gap is maintained between each plate and the inner wall of the tower body 102 to allow condensate to flow downward along the inner wall of the tower body.

[0023] It should be noted that all three plates are made of stainless steel and are arranged at 800mm intervals along the height of tower body 102, concentric with the tower axis. The upper two plates are semi-circular, with the first plate's straight edge facing the left side of the tower body and the second plate's straight edge facing the right side. The lowest plate is circular, matching the inner diameter of the tower body. All three plates have ventilation holes arranged in a quincunx pattern. A gap is maintained between each plate and the inner wall of tower body 102 to allow condensate to flow down the tower wall into the annular collection tank 205. During operation, the exhaust gas inlet valve is opened, and the exhaust gas first comes into contact with the pretreatment liquid sprayed from the spray head 103c, removing some sulfides and large particulate dust. The pretreated exhaust gas flows upward and enters the heating zone of the hot oil coil 202 and steam coil 204, where it is heated to 180~220℃ through heat transfer from the tower wall, causing moisture to evaporate and the sulfur paste particles to dry initially. The dried exhaust gas continues to rise, passing through three baffles 209 in sequence. The two large semi-circular baffles at the top force the exhaust gas to flow back, extending the residence time. In the process, the undried sulfur particles are further exposed to the high-temperature gas. The lower circular baffle plate blocks large sulfur particles, allowing them to fall through the gaps between the plates. Fine sulfur vapor rises with the airflow. After the exhaust gas enters the condensation section, it comes into contact with the condensation coil 211, and the temperature drops to below 40°C. The sulfur vapor condenses into liquid sulfur, which flows along the inner wall of the tower body 102 into the annular liquid collection tank 205. The liquid sulfur in the annular liquid collection tank 205 flows along the bottom slope to the lowest point and is discharged into the storage tank through the condensate collection pipe 206. It can be subsequently recovered and purified.

[0024] In summary, the spray assembly 103 pre-treats and desulfurizes the exhaust gas. Combined with the dual heating of the hot oil coil 202 and the steam coil 204, the drying efficiency of the exhaust gas is improved, and the moisture content of the sulfur paste is reduced from 30% to below 0.8%. The dual-layer heating structure of the hot oil coil and the steam coil enables gradient heat transfer from the inside to the outside, improving the thermal energy utilization rate and reducing steam consumption compared to traditional single steam heating equipment. The three baffles 209 form a deflection flow field, extending the exhaust gas residence time to 5-8 minutes. With the deep cooling of the condenser coil 211, the sulfur vapor recovery rate is improved. The gap between the vent holes of the baffles 209 and the tower wall reduces the accumulation of sulfur paste. Combined with the anti-stick coating of the tower body, the continuous operation cycle is extended. The sealed structure of the annular liquid collection tank 205 and the condensate collection pipe 206 prevents the leakage of sulfur condensate. The pre-treated liquid can be recycled, reducing wastewater discharge.

[0025] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0026] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0027] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0028] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A sulfur paste production off-gas drying tower characterized by: include, The spraying mechanism (100) includes a support column (101), a tower body (102) fixedly installed on the top of the support column (101), a spraying assembly (103) disposed in the inner cavity of the tower body (102), and an air inlet (104) disposed on the side wall of the tower body (102). The drying and condensation mechanism (200) includes an inner mounting ring (201) fixedly installed on the inner wall of the tower body (102), a hot oil pipe coil (202) fixedly installed on the inner circumference of the inner mounting ring (201), an outer mounting ring (203) fixedly installed on the outer wall of the tower body (102), a steam pipe coil (204) fixedly installed on the outer circumference of the outer mounting ring (203), an annular liquid collection tank (205) fixedly installed on the inner wall of the tower body (102), and a condensate collection tank fixedly installed on the outer wall of the tower body (102). The tower body (102) includes a manifold (206), a support rod (207) fixedly installed on the inner wall of the tower body (102), an installation rod (208) fixedly installed at the end of the support rod (207), a baffle plate (209) fixedly installed on the outer periphery of the installation rod (208), a fixing ring (210) fixedly installed on the inner wall of the tower body (102), a condensing coil (211) provided in the inner cavity of the tower body (102) and fixed by the fixing ring (210), and an exhaust hole (212) opened at the top of the tower body (102).

2. The sulfur cake production exhaust gas drying tower according to claim 1, characterized in that: The spray assembly (103) includes a spray box (103a) disposed on the side of the support column (101), a spray pipe (103b) connected to the spray box (103a) at one end via a connecting pipe (103d) and extending through the side wall of the tower body (102) into its inner cavity and installed horizontally, and a spray head (103c) fixed at intervals along the length of the spray pipe (103b) on its outer periphery and facing the lower part of the inner cavity of the tower body.

3. The sulfur cake production exhaust gas drying tower according to claim 2, characterized in that: The inlet end of the hot oil coil (202) is located at its upper end, and the outlet end is located at its lower end. Both the inlet end and the outlet end are fixedly installed with connecting flanges so as to connect with the pipeline of the hot oil equipment.

4. The sulfur cake production exhaust gas drying tower according to claim 3, characterized in that: The inlet end of the steam coil (204) is located at its upper end, and the outlet end is located at its lower end. Both the inlet end and the outlet end are fixedly installed with connecting flanges for connection to the pipeline of the steam equipment.

5. The sulfur cake production off-gas drying tower according to claim 4, characterized in that: The bottom of the annular liquid collection tank (205) is provided with a slope that slopes towards its lowest point along the annular direction, so that the condensate flows along the slope of the tank bottom to the lowest point, which is connected to a condensate collection pipe, and the condensate finally flows out through the collection pipe.

6. The sulfur cake production off-gas drying tower according to claim 5, characterized in that: The baffle plate (209) includes three plates arranged vertically at intervals along the height direction of the tower body (102), all arranged concentrically along the tower body axis. The upper two plates are semi-circular, with their straight edges facing each other in a spatial radial direction. The lowermost plate is a circle that matches the inner diameter of the tower body. All three plates have ventilation holes evenly distributed along the plate surface, and each plate has a gap between itself and the inner wall of the tower body (102) to allow condensate to flow downward along the inner wall of the tower body.

7. The sulfur cake production off-gas drying tower according to claim 6, characterized in that: The inlet end of the condensing coil (211) is located at the upper end thereof, the outlet end is located at the lower end thereof, and the inlet end and the outlet end are fixedly provided with connecting flanges so as to be connected with the pipeline of the condensing device.

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