Cyclohexanone production tail gas treatment device

Abstract

The utility model discloses a cyclohexanone production tail gas treatment device in the technical field of tail gas treatment, which comprises a treatment box, a liquid box is fixedly connected to the lower side of the inner cavity wall of the treatment box, a gas booster pump is fixedly connected to the middle of the lower side of the left side wall of the treatment box, and a gas inlet pipe is inserted into a gas outlet of the gas booster pump. The tail end of the air inlet pipe extends to an inner cavity of the liquid box, conical plates are fixedly connected to the lower side of the inner cavity wall of the liquid box and are sequentially and uniformly distributed from top to bottom, and the tail end of the air inlet pipe sequentially penetrates through the multiple conical plates from top to bottom and extends to the outer side of the conical plate on the lower side; the cyclohexanone production tail gas treatment device is reasonable in structural design, gas can make full contact with treatment liquid, the treatment effect is improved, and gas which cannot meet the emission standard can be treated again in time till the emission standard is met.

Description

Technical Field

[0001] The utility model relates to the technical field of tail gas treatment, in particular to a tail gas treatment device for cyclohexanone production. Background Art

[0002] Cyclohexanone is an organic compound, a colorless transparent liquid with an earthy smell. When it contains trace amounts of phenol, it has a minty smell. The impurities are light yellow, and the color changes with the storage time due to the formation of impurities. It is water white to grayish yellow with a strong pungent odor. It is mainly used as an organic synthesis raw material and solvent in industry. For example, it can dissolve nitrocellulose, coatings, paints, etc.

[0003] In the process of cyclohexanone production, harmful tail gas is generated, which needs to be treated before being discharged. Existing tail gas treatment devices usually use treatment liquid and activated carbon for treatment. However, during the treatment, the tail gas is usually discharged directly into the treatment liquid, and the gas cannot fully contact with the treatment liquid, resulting in poor treatment effect. In addition, some of the gas treated with the treatment liquid and activated carbon does not meet the emission standards and cannot be treated again in time. For this reason, we propose a cyclohexanone production tail gas treatment device. Utility Model Content

[0004] The utility model aims to provide a cyclohexanone production tail gas treatment device to solve the problem proposed in the above background technology that the existing tail gas treatment device usually uses treatment liquid and activated carbon for treatment, but during the treatment, the tail gas is usually directly discharged into the treatment liquid, the gas cannot be fully in contact with the treatment liquid, so that the treatment effect is not good, and some of the gas treated with the treatment liquid and activated carbon does not meet the emission standards and cannot be treated again in time.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a cyclohexanone production tail gas treatment device, comprising a treatment box, a liquid box is fixedly connected to the lower side of the inner cavity wall of the treatment box, a gas booster pump is fixedly connected to the middle of the lower side of the left side wall of the treatment box, an air intake pipe is plugged into the air outlet of the gas booster pump, the end of the air intake pipe extends to the inner cavity of the liquid box, a conical plate is fixedly connected to the lower side of the inner cavity wall of the liquid box, and the conical plates are evenly distributed from top to bottom, the end of the air intake pipe passes through a plurality of the conical plates in sequence from top to bottom and extends to the outer side of the conical plate on the lower side, a first air hole is opened on the top of the conical plate, and the first air hole is evenly distributed, a mounting plate is fixedly connected to the upper side between the left and right side walls of the first air hole, a mounting plate is fixedly connected to the bottom of the mounting plate, a semicircular block is fixedly connected to the bottom end of the mounting rod, a needle body is fixedly connected to the outer wall of the semicircular block, and the needle body is evenly distributed.

[0006] As a further description of the above technical solution:

[0007] The end of the air inlet pipe is sleeved with a hollow plate, the air inlet pipe is connected to the hollow plate, the bottom of the hollow plate is fixedly connected to the bottom of the inner cavity of the processing box, and the top of the hollow plate is provided with second air holes and the second air holes are evenly distributed.

[0008] As a further description of the above technical solution:

[0009] A transparent liquid level tube is inserted into the lower side of the right side wall of the liquid box, and the end of the transparent liquid level tube extends to the outside of the processing box.

[0010] As a further description of the above technical solution:

[0011] A delivery pipe is inserted in the middle of the top right side of the liquid tank, and the middle section of the delivery pipe is fixedly connected to an airflow one-way valve through a flange. The end of the delivery pipe is connected to a box body, and an activated carbon honeycomb panel is provided on the right side of the inner cavity wall of the box body. The activated carbon honeycomb panels are evenly distributed from right to left and the density of the activated carbon honeycomb panels increases from right to left. A partition is fixedly connected to the inner cavity wall of the box body and the left side of the activated carbon honeycomb panel on the left side, and holes are opened on the left side wall of the partition. A gas concentration detector is fixedly connected to the middle of the top left side of the box body, and the bottom of the gas concentration detector extends to the inner cavity of the box body and is located on the left side of the partition.

[0012] As a further description of the above technical solution:

[0013] A plate body is fixedly connected to the upper side of the rear side wall of the inner cavity of the processing box, an outlet pipe is inserted into the left side of the top of the plate body, the top of the outlet pipe extends to the outside of the processing box, a return pipe is inserted into the right side of the top of the plate body, the end of the return pipe is connected with the box body, the rear section of the return pipe is fixedly connected with an airflow check valve through a flange, a slot plate is slidably connected to the bottom of the plate body, the slot plate is connected to the outlet pipe, the bottom rear side of the slot plate is slidably connected to a limiting block, the rear side wall of the limiting block is fixedly connected to the rear side wall of the inner cavity of the processing box, the inner cavity of the slot plate is provided with a fan, the slot plate is connected to the box body through a spring hose, the left side wall of the slot plate is fixedly connected to an electric telescopic rod, and the left end of the electric telescopic rod is fixedly connected to the left side wall of the inner cavity of the box body.

[0014] As a further description of the above technical solution:

[0015] A controller is fixedly connected to the left side of the top of the box body, and the controller, the electric telescopic rod and the gas concentration detector are electrically connected.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The cyclohexanone production tail gas treatment device starts a gas booster pump through an external controller. The gas booster pump pressurizes the tail gas and sends it into the hollow plate through the air inlet pipe. The hollow plate cooperates with the second air hole to evenly distribute the tail gas to various places. The bubbles formed by the gas float upward through the conical plate and the first air hole, thereby increasing the residence time of the gas in the treatment liquid. In the process of the bubble floating upward through the first air hole, the needle punctures the bubble so that the gas inside that can be absorbed by the treatment liquid can be released, so that the gas can fully contact with the treatment liquid, and the treatment effect is improved.

[0018] 2. The tail gas treatment device for cyclohexanone production starts the fan and the gas concentration detector through an external controller. The fan draws the gas through the activated carbon honeycomb plates of different densities for treatment in turn. The treated gas contacts the gas concentration detector through the partition to detect the gas concentration. If the concentration meets the standard, it is discharged through the outlet pipe. When the concentration does not meet the standard, the gas concentration detector transmits a signal to the controller. The controller controls the electric telescopic rod to start, thereby driving the slot plate to move to the right so that the slot plate is connected to the reflux pipe, so that the unqualified gas is sent back into the box through the reflux pipe to be treated by the activated carbon honeycomb plate again. After meeting the standard, the gas concentration detector controls the electric telescopic rod through the controller to drive the slot plate to reset and then be connected to the outlet pipe again. Gas that does not meet the emission standard can be treated again in time until the emission standard is met. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural stereoscopic schematic diagram of a cyclohexanone production tail gas treatment device proposed by the utility model;

[0020] Figure 2 This is a schematic diagram of the main cross-sectional view of the structure of a cyclohexanone production tail gas treatment device proposed by the utility model;

[0021] Figure 3 A top view schematic diagram of a structural conical plate of a cyclohexanone production tail gas treatment device proposed by the utility model;

[0022] Figure 4 This is a top view schematic diagram of a hollow plate structure of a cyclohexanone production tail gas treatment device proposed by the utility model;

[0023] Figure 5 The utility model proposes a cyclohexanone production tail gas treatment device Figure 2 The enlarged structural diagram at A in the middle;

[0024] Figure 6 The utility model proposes a cyclohexanone production tail gas treatment device Figure 2 The enlarged structural diagram at B in the middle;

[0025] Figure 7 The utility model proposes a cyclohexanone production tail gas treatment device Figure 3 Enlarged structural diagram at point C in the middle.

[0026] In the figure: 100, processing box; 110, liquid box; 111, gas booster pump; 112, air inlet pipe; 113, conical plate; 114, first air hole; 115, mounting plate; 116, mounting rod; 117, semicircular block; 118, needle body; 120, hollow plate; 121, second air hole; 130, transparent liquid level tube; 140, delivery pipe; 141, box body; 142, activated carbon honeycomb plate; 143, partition; 144, gas concentration detector; 150, plate body; 151, outlet pipe; 152, reflux pipe; 153, trough plate; 154, limit block; 155, fan; 156, electric telescopic rod; 160, controller. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] The utility model provides a cyclohexanone production tail gas treatment device, which can make the gas fully contact with the treatment liquid, improve the treatment effect, and can timely treat the gas that does not meet the emission standards until it meets the emission standards. Figure 1-7 , including a processing box 100;

[0031] Please refer again Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7A liquid box 110 is fixedly connected to the lower side of the inner cavity wall of the treatment box 100. The liquid box 110 is used to place the treatment liquid. A gas booster pump 111 is fixedly connected to the middle of the lower side of the left side wall of the treatment box 100. The gas booster pump 111 is used to boost the tail gas into the treatment liquid. The gas outlet of the gas booster pump 111 is plugged with an intake pipe 112. The intake pipe 112 is used to transport the tail gas. The end of the intake pipe 112 extends to the inner cavity of the liquid box 110. A conical plate 113 is fixedly connected to the lower side of the inner cavity wall of the liquid box 110. The conical plates 113 are evenly distributed from top to bottom. The conical plates 113 are used to increase the residence time of the tail gas in the treatment liquid. The end of the intake pipe 112 is from top to The cone plate 113 is provided with a plurality of conical plates 113 and extends to the outer side of the lower conical plate 113. The top of the conical plate 113 is provided with a first air hole 114 and the first air holes 114 are evenly distributed. The first air hole 114 is used to allow the exhaust gas to pass through the conical plate 113. A mounting plate 115 is fixedly connected to the upper side between the left and right side walls of the first air hole 114. The mounting plate 115 is used to install a mounting rod 116. The bottom of the mounting plate 115 is fixedly connected to a mounting rod 116. The mounting rod 116 is used to install a semicircular block 117. The bottom end of the mounting rod 116 is fixedly connected to a semicircular block 117. The semicircular block 117 is used to withstand a needle body 118. The outer wall of the semicircular block 117 is fixedly connected to a needle body 118 and the needle body 118 is evenly distributed, the needle body 118 is used to break the bubbles so that the internal exhaust gas can fully contact the treatment liquid, the end of the air inlet pipe 112 is sleeved with a hollow plate 120, the hollow plate 120 is used to release the exhaust gas, the air inlet pipe 112 is connected to the hollow plate 120, the bottom of the hollow plate 120 is fixedly connected to the bottom of the inner cavity of the treatment box 100, the top of the hollow plate 120 is opened with a second air hole 121 and the second air holes 121 are evenly distributed, the second air holes 121 are used to cooperate with the hollow plate 120 to evenly distribute the exhaust gas everywhere, avoid concentration together to reduce the treatment effect, and a transparent liquid level tube 130 is inserted on the lower side of the right side wall of the liquid tank 110, and the transparent liquid level tube 130 is used to observe The liquid height inside the liquid tank 110 is replenished in time. The end of the transparent liquid level tube 130 extends to the outside of the treatment box 100. The gas booster pump 111 is started through the external controller. The gas booster pump 111 pressurizes the tail gas and sends it to the hollow plate 120 through the air inlet pipe 112. The hollow plate 120 cooperates with the second air hole 121 to evenly distribute the tail gas to various places. The bubbles formed by the gas float upward through the cone plate 113 and the first air hole 114, thereby increasing the residence time of the gas in the treatment liquid. In the process of the bubble floating upward through the first air hole 114, the needle 118 punctures the bubble so that the gas inside that can be absorbed by the treatment liquid can be released;

[0032] In summary, the gas and the treatment liquid can be fully contacted to improve the treatment effect.

[0033] Please refer again Figure 1 , Figure 2 and Figure 5A delivery pipe 140 is inserted in the middle of the top right side of the liquid tank 110. The delivery pipe 140 is used to deliver the gas that cannot be absorbed by the treatment liquid into the box body 141. The middle section of the delivery pipe 140 is fixedly connected to an airflow check valve through a flange. The airflow check valve is used to prevent gas backflow. The end of the delivery pipe 140 is connected to the box body 141. The box body 141 is used to treat the gas. An activated carbon honeycomb panel 142 is provided on the right side of the inner cavity wall of the box body 141. The activated carbon honeycomb panel 142 is used to treat the gas. The activated carbon honeycomb panels 142 are evenly distributed from right to left and the density of the activated carbon honeycomb panels 142 increases from right to left. The inner cavity wall of the box body 141 and the left side of the activated carbon honeycomb panel 142 on the left side are fixedly connected with a partition 143, and the left side of the partition 143 The side wall is provided with holes, and the partition 143 is used to divide the box body 141 into two chambers. The chamber on the left is used to store the processed gas. A gas concentration detector 144 is fixedly connected to the middle of the top left side of the box body 141. The gas concentration detector 144 is used to detect the processed gas and transmit a signal to the controller 160 to control the electric telescopic rod 156. The bottom of the gas concentration detector 144 extends to the inner cavity of the box body 141 and is located on the left side of the partition 143. A plate body 150 is fixedly connected to the upper side of the rear side wall of the inner cavity of the processing box 100. The plate body 150 is used to install the outlet pipe 151 and the return pipe 152. The outlet pipe 151 is plugged into the left side of the top of the plate body 150. The outlet pipe 151 is used to discharge the processed gas. The top of the outlet pipe 151 The end extends to the outside of the processing box 100, and a return pipe 152 is inserted on the right side of the top of the plate body 150. The return pipe 152 is used to transport the gas that needs to be processed again back to the inside of the box body 141. The end of the return pipe 152 is connected to the box body 141, and the rear section of the return pipe 152 is fixedly connected to an air flow check valve through a flange. The bottom of the plate body 150 is slidably connected with a slot plate 153, and the slot plate 153 is connected to the outlet pipe 151. The slot plate 153 is used to install a fan 155. The bottom rear side of the slot plate 153 is slidably connected to a limiting block 154. The limiting block 154 is used to cooperate with the plate body 150 to limit the slot plate 153. The rear side wall of the limiting block 154 is fixedly connected to the rear side wall of the inner cavity of the processing box 100. The inner cavity of the slot plate 153 is provided with a fan 1 55, the fan 155 is used to increase the circulation speed of the gas, the slot plate 153 is connected to the box body 141 through a spring hose, the left side wall of the slot plate 153 is fixedly connected with an electric telescopic rod 156, the electric telescopic rod 156 is used to drive the slot plate 153 to move, the left end of the electric telescopic rod 156 is fixedly connected to the left side wall of the inner cavity of the box body 141, and the top left side of the box body 141 is fixedly connected with a controller 160, the controller 160 is used to control the electric telescopic rod 156, the controller 160, the electric telescopic rod 156 and the gas concentration detector 144 are electrically connected, the fan 155 and the gas concentration detector 144 are started by an external controller, and the fan 155 pumps the gas through the activated carbon honeycomb panels 142 with different densities for processing in turn,The treated gas contacts the gas concentration detector 144 through the partition 143 to detect the gas concentration. If the concentration meets the standard, it is discharged through the outlet pipe 151. If the concentration does not meet the standard, the gas concentration detector 144 transmits a signal to the controller 160. The controller 160 controls the electric telescopic rod 156 to start, thereby driving the slot plate 153 to move to the right, so that the slot plate 153 is connected with the return pipe 152, so that the unqualified gas is sent into the box 141 again through the return pipe 152 to be treated by the activated carbon honeycomb plate 142 again. After meeting the standard, the gas concentration detector 144 controls the electric telescopic rod 156 through the controller 160 to drive the slot plate 153 to reset and then be connected with the outlet pipe 151 again;

[0034] To sum up, the gas that does not meet the emission standards can be treated again in time until it meets the emission standards.

[0035] In specific use, personnel in this technical field start the gas booster pump 111, the fan 155 and the gas concentration detector 144 through an external controller. The gas booster pump 111 pressurizes the exhaust gas and sends it into the hollow plate 120 through the intake pipe 112. The hollow plate 120 cooperates with the second air hole 121 to evenly distribute the exhaust gas to various places. The bubbles formed by the gas float upward through the conical plate 113 and the first air hole 114, thereby increasing the residence time of the gas in the treatment liquid. In the process of the bubbles floating upward through the first air hole 114, the needle 118 punctures the bubbles so that the gas inside that can be absorbed by the treatment liquid can be released, and after treatment, it is transported into the box 141 through the delivery pipe 140. The fan 155 pumps the gas according to the The gas passes through the activated carbon honeycomb plate 142 with different densities for treatment. The treated gas contacts the gas concentration detector 144 through the partition 143 to detect the gas concentration. If the concentration meets the standard, it is discharged through the outlet pipe 151. When the concentration does not meet the standard, the gas concentration detector 144 transmits a signal to the controller 160. The controller 160 controls the electric telescopic rod 156 to start, thereby driving the slot plate 153 to move to the right so that the slot plate 153 is connected with the return pipe 152, so that the unqualified gas is sent into the box 141 again through the return pipe 152 to pass through the activated carbon honeycomb plate 142 for treatment again. After meeting the standard, the gas concentration detector 144 controls the electric telescopic rod 156 through the controller 160 to drive the slot plate 153 to reset and then be connected with the outlet pipe 151 again.

[0036] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" 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 utility model. In this specification, the schematic representation 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.

[0037] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A cyclohexanone production tail gas treatment device, characterized in that: The invention comprises a processing box (100), wherein a liquid box (110) is fixedly connected to the lower side of the inner cavity wall of the processing box (100), a gas booster pump (111) is fixedly connected to the middle of the lower side of the left side wall of the processing box (100), an air inlet pipe (112) is plugged into the air outlet of the gas booster pump (111), the end of the air inlet pipe (112) extends to the inner cavity of the liquid box (110), a conical plate (113) is fixedly connected to the lower side of the inner cavity wall of the liquid box (110), and the conical plates (113) are evenly distributed from top to bottom, and the ends of the air inlet pipe (112) are arranged in a uniform manner from top to bottom. The conical plates (113) are penetrated for a plurality of times and extend to the outer side of the conical plate (113) at the lower side; a first air hole (114) is opened on the top of the conical plate (113) and the first air holes (114) are evenly distributed; a mounting plate (115) is fixedly connected to the upper side between the left and right side walls of the first air hole (114); a mounting rod (116) is fixedly connected to the bottom of the mounting plate (115); a semicircular block (117) is fixedly connected to the bottom end of the mounting rod (116); a needle body (118) is fixedly connected to the outer side wall of the semicircular block (117) and the needle body (118) is evenly distributed.

2. A cyclohexanone production tail gas treatment device according to claim 1, characterized in that: The end of the air inlet pipe (112) is sleeved with a hollow plate (120), the air inlet pipe (112) is connected to the hollow plate (120), the bottom of the hollow plate (120) is fixedly connected to the bottom of the inner cavity of the processing box (100), and the top of the hollow plate (120) is provided with second air holes (121), and the second air holes (121) are evenly distributed.

3. A cyclohexanone production tail gas treatment device according to claim 1, characterized in that: A transparent liquid level tube (130) is inserted into the lower side of the right side wall of the liquid box (110), and the end of the transparent liquid level tube (130) extends to the outside of the processing box (100).

4. A cyclohexanone production tail gas treatment device according to claim 1, characterized in that: A delivery pipe (140) is inserted in the middle of the right side of the top of the liquid box (110), and a gas flow check valve is fixedly connected to the middle section of the delivery pipe (140) through a flange. The end of the delivery pipe (140) is connected to the box body (141). An activated carbon honeycomb panel (142) is provided on the right side of the inner cavity wall of the box body (141). The activated carbon honeycomb panels (142) are evenly distributed from right to left and the density of the activated carbon honeycomb panels (142) increases from right to left. A partition (143) is fixedly connected to the inner cavity wall of the box body (141) and located on the left side of the activated carbon honeycomb panel (142), and a hole is opened on the left side wall of the partition (143). A gas concentration detector (144) is fixedly connected to the middle of the left side of the top of the box body (141), and the bottom of the gas concentration detector (144) extends to the inner cavity of the box body (141) and is located on the left side of the partition (143).

5. A cyclohexanone production tail gas treatment device according to claim 4, characterized in that: A plate body (150) is fixedly connected to the upper side of the rear side wall of the inner cavity of the processing box (100); an outlet pipe (151) is inserted on the left side of the top of the plate body (150); the top end of the outlet pipe (151) extends to the outside of the processing box (100); a return pipe (152) is inserted on the right side of the top of the plate body (150); the end of the return pipe (152) is connected to the box body (141); the rear section of the return pipe (152) is fixedly connected to an airflow check valve via a flange; a slot plate (153) is slidably connected to the bottom of the plate body (150); the slot plate (153) is 53) is connected to the outlet pipe (151), the bottom rear side of the slot plate (153) is slidably connected to a limit block (154), the rear side wall of the limit block (154) is fixedly connected to the rear side wall of the inner cavity of the processing box (100), the inner cavity of the slot plate (153) is provided with a fan (155), the slot plate (153) is connected to the box body (141) through a spring hose, the left side wall of the slot plate (153) is fixedly connected to an electric telescopic rod (156), and the left end of the electric telescopic rod (156) is fixedly connected to the left side wall of the inner cavity of the box body (141).

6. A cyclohexanone production tail gas treatment device according to claim 5, characterized in that: A controller (160) is fixedly connected to the left side of the top of the box body (141), and the controller (160), the electric telescopic rod (156) and the gas concentration detector (144) are electrically connected.

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