Waste gas treatment mechanism for alkyl sulfonyl chloride production and processing

Abstract

The utility model discloses a waste gas treatment mechanism for alkyl sulfonyl chloride production and processing, which comprises a plurality of spray towers connected in series, each spray tower is provided with at least three layers, each layer is provided with a set of spray device, each spray device is provided with a vortex-shaped spray water guide pipe and a plurality of spray heads connected to the spray water guide pipe, and the spray heads are connected to the spray water guide pipe. And a terminal filtering piece is arranged between the spraying water guide pipe and the spraying head. According to the utility model, the plurality of spray headers are uniformly distributed in the horizontal section of the spray tower by utilizing the vortex-shaped spray water conduit, so that the effective contact area of waste gas and spray liquid can be increased, the waste gas and the spray liquid are subjected to sufficient material exchange, and the absorption efficiency of the waste gas is further improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to waste gas treatment equipment technical field, concretely relates to a waste gas treatment mechanism for alkyl sulfonyl chloride production and processing. BACKGROUND

[0002] Alkyl sulfonate phenyl ester is an important surfactant, is widely used in daily chemical, building material, energy field etc.. Its production process mainly includes two step reactions of generating alkyl sulfonate and phenol alkylation, after the reaction, the product is obtained alkyl sulfonate phenyl ester pure product through distillation, washing, then through drying, packing can be used as product and sell. 12 ~C 18 In the process of generating alkyl sulfonate, because it is necessary to pass into sulfur dioxide and chlorine in C

[0003] Because the waste gas containing hydrogen chloride, sulfur dioxide, chlorine etc. is acid gas, the existing technology usually adopts absorption method, condensation method and adsorption method when carrying out waste gas treatment, wherein absorption method is to use water or lye to absorb waste gas through spray tower, so that waste gas reaches discharge standard. In order to improve the absorption efficiency of acid waste gas in alkyl sulfonyl chloride production process, the existing technology adopts the design of multiple tower series and multiple layer spray tower when using spray tower. Although this, because the reaction generated hydrogen chloride waste gas often has high concentration, after being sprayed and absorbed in multiple stage spray tower, hydrogen chloride may still be detected. Therefore, it is still necessary to improve the waste gas absorption efficiency of spray tower. UTILITY MODEL CONTENTS

[0004] The utility model provides a kind of waste gas treatment mechanism for alkyl sulfonyl chloride production and processing to solve at least one of the above technical problems.

[0005] The technical scheme adopted by the utility model is as follows: a kind of waste gas treatment mechanism for alkyl sulfonyl chloride production and processing, including multiple spray towers in series, water and waste lye are used as spraying liquid in the spray tower in series, to improve the absorption rate of waste gas containing hydrogen chloride, sulfur dioxide, chlorine etc. The spray tower has at least three layers, preferably four layers, the first to third layers are set as spraying layer, each layer has a set of spraying device, the spraying device has a vortex-shaped spraying water guide pipe and multiple spraying heads connected to the spraying water guide pipe, the specific number of spraying heads is determined according to the diameter size and the number of turns of the vortex-shaped spraying water guide pipe, to ensure the uniform distribution of spraying heads on the circular cross section of the spray tower as much as possible. Terminal filter is arranged between the spraying water guide pipe and the spraying head. The fourth layer is set as demisting layer to prevent water vapor from entering the next stage of treatment unit during waste gas treatment.

[0006] Further, the spray water guide pipe can also be annular.

[0007] In a preferred embodiment, the spray head has an angle of 30-60 degrees with the vertical direction.

[0008] In a preferred embodiment, the spray heads are arranged at intervals, and the interval between two adjacent spray heads gradually decreases from the center to the edge of the spray water guide pipe, so that the distribution of the spray heads in the circular cross section of the spray tower presents a distribution condition of more on the edge and less in the middle.

[0009] In a preferred embodiment, the bottom of the spray layer has a spacer plate with air holes for facilitating the passage of exhaust gas, and the spacer plate is provided with filler.

[0010] In a preferred embodiment, the diameter of the air holes gradually increases from the bottom layer to the top layer.

[0011] In a preferred embodiment, the filler is spherical filler, and the spherical filler has at least two size specifications, so that the spherical fillers have different gaps. The presence of different gaps can increase the residence time of the exhaust gas passing through the spherical filler, thereby increasing the material exchange time between the exhaust gas and the spray liquid, and improving the absorption efficiency of the spray liquid to the exhaust gas.

[0012] Further, the filler can be a skeleton filler. The skeleton filler has abundant pores, which can increase the contact area between the exhaust gas and the spray liquid, and the complex pores can also increase the residence time of the exhaust gas, thereby increasing the material exchange time between the exhaust gas and the spray liquid, and improving the absorption efficiency of the spray liquid to the exhaust gas.

[0013] In a preferred embodiment, the bottom of the spray tower has an exhaust gas inlet, and the top of the spray tower has a spray gas outlet connected to an induced draft fan, so that the exhaust gas flows through each layer of spray device in turn from bottom to top.

[0014] In a preferred embodiment, the spray layer has an observation window near the top of the spray layer to facilitate observation of the spray state of the spray head.

[0015] In a preferred embodiment, the spray tower has a circulating liquid pool connected to the bottom of the spray tower, the circulating liquid pool is connected to the spray water guide pipe through a water pump and a water supply pipe, and a start-end filter is arranged between the circulating liquid pool and the water pump.

[0016] In a preferred embodiment, the circulating reservoir is connected with a liquid supply pipe for supplying the non-absorbed tail gas spray liquid into the circulating reservoir and a liquid discharge pipe for discharging the absorbed tail gas spray liquid in the circulating reservoir, and the liquid supply pipe and the liquid discharge pipe are provided with electromagnetic valves for controlling the liquid flow.

[0017] Thanks to the above technical scheme, the utility model has the advantages of:

[0018] 1. As a preferred embodiment of the utility model, the vortex-shaped spray water guide pipe is different from the traditional linear arrangement of spray heads. When linearly arranged, the overlapping spray areas of multiple spray heads are concentrated, and some overlapping areas even overlap all the spray heads, making the entire spray layer present a strip-shaped distribution pattern with dense middle and sparse edges. This makes the effective contact area of the edge area with the waste gas smaller than that of the center area, causing the waste gas absorption efficiency to be uneven in the horizontal plane. After the spray water guide pipe is shaped as a vortex, the overlapping spray areas of the spray heads become scattered in the circular area of the horizontal cross section of the spray tower, reducing the number of spray heads participating in the overlapping spray area, making the spray of the entire spray layer more balanced, and thus improving the absorption efficiency of the waste gas.

[0019] 2. As a preferred embodiment of the utility model, the packing material is selected as two different specifications of spherical packing material, so that the spherical packing materials have different gaps. The existence of different gaps can increase the residence time of the waste gas passing through the spherical packing material, thereby increasing the material exchange time between the waste gas and the spray liquid, and thus improving the absorption efficiency of the spray liquid on the waste gas.

[0020] 3. As a preferred embodiment of the utility model, the pore size of the gas hole is designed to increase the residence time of the waste gas in the bottom spray layer, improve the absorption efficiency of the spray layer on the waste gas, and at the same time ensure the discharge efficiency of the waste gas after being sprayed and absorbed by the spray layer. BRIEF DESCRIPTION OF DRAWINGS

[0021] The accompanying drawings, which are included to provide a further understanding of the utility model, form a part of the utility model and serve to explain the utility model, and do not constitute an improper limitation on the utility model. In the drawings:

[0022] Figure 1 is a schematic diagram of the overall structure of the spray tower of a preferred embodiment of the utility model;

[0023] Figure 2 is a schematic diagram of the layout of the spray water guide pipe and the spray head of a preferred embodiment of the utility model;

[0024] Figure 3The utility model discloses a preferred embodiment's spraying layer sprays water guide pipe connection schematic drawing;

[0025] Figure 4 The utility model discloses a preferred embodiment's spraying water guide pipe and spraying head connection schematic drawing;

[0026] Figure 5 The utility model discloses a preferred embodiment's spraying liquid circulation structure schematic drawing;

[0027] Figure 6 The utility model discloses a preferred embodiment's spraying layer structure schematic drawing;

[0028] Figure 7 The utility model discloses a preferred embodiment's spraying liquid replacement structure schematic drawing.

[0029] Reference signs:

[0030] 1, spraying layer;11, spraying water guide pipe;12, spraying head;13, terminal filter piece;14, partition plate;140, air hole;

[0031] 2, demisting layer;

[0032] 3, waste gas inlet;

[0033] 4, spraying gas outlet;

[0034] 5, observation window;

[0035] 6, circulating liquid storage tank;61, water pump;62, water supply pipe;63, initial end filter piece;64, liquid supply pipe;65, liquid discharge pipe;66, electromagnetic valve. DETAILED DESCRIPTION

[0036] In order to more clearly illustrate the overall concept of the utility model, the following will be described in detail with the help of the accompanying drawings.

[0037] In the following description, a lot of specific details are set forth in order to fully understand the utility model, however, the utility model can also be implemented in other ways different from the description herein, therefore, the protection scope of the utility model is not limited by the following disclosed specific embodiments.

[0038] In addition, in the description of the utility model, it needs to be understood that the orientation or position relationship indicated by the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as the limitation of the utility model.

[0039] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected, or it can be communicated; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. In the description of the present application, the description of the terms "embodiment", "example", "one embodiment", "example" or "specific example" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0041] A preferred embodiment, as shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 The waste gas treatment mechanism for alkyl sulfonyl chloride production and processing includes three spray towers connected in series, wherein the spray liquid of the first two spray towers is water, and the spray liquid of the last spray tower is waste lye. Through the absorption of the two water spray towers, high content of hydrogen chloride gas in the waste gas can be removed. After the absorption of the waste lye spray tower, the absorption rate of waste gas containing hydrogen chloride, sulfur dioxide, chlorine and the like can be improved, and the acidic gas in the waste gas can be absorbed, so as to reach the emission standard.

[0042] The spray tower is four layers, wherein the first to third layers are spray layers 1, and the fourth layer is arranged as a demisting layer 2 to prevent water vapor brought out in the waste gas treatment process from entering the next stage treatment unit. Each spray layer 1 has a set of spray devices, and the spray device has a spray water guide pipe 11 in a vortex shape and a plurality of spray heads 12 connected to the spray water guide pipe 11. Unlike the traditional linear arrangement of the spray heads 12, the overlapping spray area of the plurality of spray heads 12 is more concentrated when linearly arranged, and part of the overlapping area even superimposes all the spray heads 12, so that the entire spray layer 1 presents a strip-shaped distribution trend with a dense center and a sparse edge, which makes the effective contact area of the edge area with the waste gas smaller than that of the center area when the waste gas is absorbed, causing the waste gas absorption efficiency to be uneven in the horizontal plane. After the spray water guide pipe 11 is adopted in a vortex shape, the overlapping spray area of the spray heads 12 can be changed to a state of being scattered in a circular area in the horizontal cross section of the spray tower, reducing the number of spray heads 12 participating in the overlapping spray area, making the spray of the entire spray layer 1 more balanced, and thus improving the absorption efficiency of the waste gas.

[0043] Specifically, when the spray heads 12 are arranged on the spray water guide pipe 11, the interval between the adjacent two spray heads 12 gradually decreases from the center to the outer edge of the spray water guide pipe 11, thereby avoiding the condition that the middle spray area is too dense.

[0044] Optionally, the spray water guide pipe 11 is in a ring shape, and the spray heads 12 are uniformly distributed on the ring-shaped spray water guide pipe 11.

[0045] Further, as shown in Figure 4 , the spray water guide pipe 11 and the spray head 12 have a terminal filter 13 therebetween. The terminal filter 13 is selected to be a filter screen or filter cotton, preferably filter cotton, to avoid impurities carried by the spray liquid in the circulation process from entering the spray head 12, thereby preventing the spray head 12 from working normally.

[0046] Optionally, the spray head 12 can be arranged at an angle to the vertical direction, and the angle is selected to be between 30° and 60°. The angle of the spray head 12 can spray the spray head 12 close to the wall of the spray tower inward, avoid the effective spray area of the spray head 12 directly intersecting with the wall of the spray tower, and prevent the problem that the spray liquid gathers into droplets and leaves from the side wall of the spray tower, thereby improving the effective spray area of the spray layer 1 and achieving the purpose of improving the waste gas absorption efficiency of the spray tower.

[0047] In a preferred embodiment, the bottom of the spray layer 1 is provided with a spacing plate 14, the spacing plate 14 is provided with air holes 140 for facilitating the passage of exhaust gas, and the spacing plate 14 is provided with filler. The filler is spherical filler, and the spherical filler has at least two size specifications, so that the spherical filler has different gaps. The existence of different gaps can increase the residence time of the exhaust gas passing through the spherical filler, thereby increasing the material exchange time between the exhaust gas and the spray liquid, and improving the absorption efficiency of the spray liquid to the exhaust gas.

[0048] Further, the filler can be a skeleton filler. The skeleton filler has abundant pores, which can increase the contact area between the exhaust gas and the spray liquid. In addition, the complex pores can also increase the residence time of the exhaust gas, thereby increasing the material exchange time between the exhaust gas and the spray liquid, and improving the absorption efficiency of the spray liquid to the exhaust gas.

[0049] In a preferred embodiment, the diameter of the air hole 140 gradually increases from the bottom spray layer 1 to the top spray layer 1, that is, the diameter of the air hole 140 of the top spray layer 1 > the diameter of the air hole 140 of the second spray layer 1 > the diameter of the air hole 140 of the bottom spray layer 1. This arrangement can increase the residence time of the exhaust gas in the bottom spray layer 1, improve the absorption efficiency of the spray layer 1 to the exhaust gas, and ensure the exhaust efficiency of the exhaust gas after being sprayed and absorbed by the spray layer 1.

[0050] In a preferred embodiment, as shown in Figure 5 , the bottom of the spray tower is provided with an exhaust gas inlet 3, and the top of the spray tower is provided with a spray gas outlet 4, which is connected to an induced draft fan, so that the exhaust gas flows through each layer of spray device in turn from bottom to top.

[0051] Specifically, the spray layer 1 is provided with an observation window 5, which is close to the top of the spray layer 1, so as to observe the spraying state of the spray head 12, and prevent the problem of unsatisfactory exhaust gas treatment effect caused by the failure of the spray head 12 not being found in time.

[0052] In a preferred embodiment, as shown in Figure 5 , Figure 7 , the spray tower is provided with a circulating liquid pool 6 connected to the bottom of the spray tower, the circulating liquid pool 6 is connected to the spray water pipe 11 through a water pump 61 and a water supply pipe 62, and the circulating liquid pool 6 and the water pump 61 are provided with a start-end filter 63, and the start-end filter 63 is selected as a multi-layer filter screen with gradually increasing mesh density.

[0053] Further, the circulating liquid pool 6 is connected with a liquid supply pipe 64 for supplying the non-absorbed tail gas spray liquid into the circulating liquid pool 6 and a liquid discharge pipe 65 for discharging the absorbed tail gas spray liquid in the circulating liquid pool 6, and the liquid supply pipe 64 and the liquid discharge pipe 65 are provided with electromagnetic valves 66 for controlling the liquid flow. Through the control of the electromagnetic valves 66, the spray liquid is replaced in time, and the problem of the waste gas absorption efficiency reduction caused by the saturation of the spray liquid is avoided.

[0054] The parts not described in the utility model can be realized by using or referring to the existing technology.

[0055] Each of the embodiments in the specification adopts a progressive manner for description, and the same and similar parts between the embodiments can be referred to each other, and each of the embodiments mainly describes the difference from other embodiments.

[0056] The above only describes the embodiments of the utility model, and does not limit the utility model. For those skilled in the art, the utility model can have various changes and variations. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the claim range of the utility model.

Claims

1. An exhaust gas treatment mechanism for alkylsulfonyl chloride production processing, comprising a plurality of spray towers connected in series, characterized by, The spray tower has at least three spray layers (1) and one demisting layer (2), the spray layer (1) has a spray device, the spray device has a spray water guide pipe (11) in a vortex shape and a plurality of spray heads (12) connected to the spray water guide pipe (11), and the spray water guide pipe (11) and the spray head (12) have a terminal filter (13) therebetween.

2. The waste gas treatment mechanism for alkylsulfonyl chloride production processing according to claim 1, characterized by, The spray heads (12) are arranged at intervals, and the interval between adjacent two spray heads (12) gradually decreases from the center to the outer edge of the spray water guide pipe (11).

3. The waste gas treatment mechanism for alkylsulfonyl chloride production processing according to claim 1, characterized by, The bottom of the spray layer (1) has a partition plate (14) with air holes (140) formed thereon for facilitating the passage of exhaust gas, and the partition plate (14) has a filler placed thereon.

4. The waste gas treatment mechanism for alkylsulfonyl chloride production processing according to claim 3, characterized by, The diameter of the air hole (140) gradually increases from the bottom layer to the top layer.

5. The alkylsulfonyl chloride production process off-gas treatment mechanism according to claim 3 or 4, characterized by, The filler is spherical filler, and the spherical filler has at least two size specifications, so that the spherical filler has different gaps therebetween.

6. The alkylsulfonyl chloride production process off-gas treatment mechanism according to claim 3 or 4, characterized by, The filler is a skeleton filler.

7. The waste gas treatment mechanism for alkylsulfonyl chloride production processing according to claim 1, characterized by, The spray tower has an exhaust gas inlet (3) at the bottom and a spray gas outlet (4) at the top, and the spray gas outlet (4) is connected to an induced draft fan, so that the exhaust gas flows through each layer of spray device in turn from bottom to top.

8. The waste gas treatment mechanism for alkylsulfonyl chloride production processing according to claim 1, characterized by, The spray layer (1) has an observation window (5) near the top of the spray layer (1).

9. The waste gas treatment mechanism for alkylsulfonyl chloride production processing according to claim 1, characterized by, The spray tower has a circulating reservoir (6) connected to the bottom of the spray tower, the circulating reservoir (6) is connected to the spray water guide pipe (11) through a water pump (61) and a water supply pipe (62), and has a start filter (63) between the circulating reservoir (6) and the water pump (61).

10. The waste gas treatment mechanism for alkylsulfonyl chloride production processing according to claim 9, characterized by, The circulating reservoir (6) is connected to a liquid supply pipe (64) for providing non-absorbed exhaust gas spray liquid into the circulating reservoir (6) and a liquid discharge pipe (65) for discharging absorbed exhaust gas spray liquid in the circulating reservoir (6), and the liquid supply pipe (64) and the liquid discharge pipe (65) have electromagnetic valves (66) for controlling the flow of liquid.

Images