Waste gas sieve-plate tower treatment device for starch

Abstract

A waste gas sieve-plate tower treatment device for starch comprises a tower body, a plurality of tower plates are sequentially arranged in the tower body from top to bottom, and a plurality of sieve holes penetrating up and down are formed in the tower plates; overflow weirs are arranged at the end parts of the tower plates, and the lower ends of the overflow weirs are connected with water guide assemblies for guiding clear water to the adjacent tower plates on the lower layer; the tower body is also connected with a water source recovery assembly which is used for treating purified wastewater and enabling the wastewater to flow back into the tower body; the water source recovery assembly is arranged on the sieve-plate tower structure, so that sewage after starch waste gas treatment can be purified and recovered, and is put into the sieve-plate tower again for recycling, thereby reducing water source waste, reducing the cost of starch production waste gas treatment, and being beneficial to environmental protection.

Description

TECHNICAL FIELD

[0001] The utility model relates to starch preparation process technical field, more specifically, a kind of waste gas screen plate tower processing device for starch. BACKGROUND

[0002] Starch processing and products are starch is used corn, sorghum, wheat and potato, sweet potato, cassava and other tuber crops as raw material, after soaking, grinding, the protein, fat, cellulose and other non-starch material is separated and removed.The starch product is made of starch as raw material, through the mechanical, chemical or biochemical process processing and is made into product.Starch products are various, and classification methods are different, wherein dry process is needed, and waste gas is generated in the drying process, and the main components include water vapor, starch dust and volatile organic compounds, which can cause certain harm to the environment if the waste gas is directly discharged into the atmosphere without treatment. SUMMARY

[0003] An advantage of the utility model is to provide waste gas screen plate tower processing device for starch, water recovery assembly is arranged on the screen plate tower structure, the sewage treated with starch waste gas can be purified and recycled, and is recycled again in screen plate tower, so as to reduce water waste, the cost of starch production waste gas treatment can be reduced, and it is beneficial to environmental protection.

[0004] To achieve at least one advantage of the utility model, the utility model provides a waste gas screen plate tower processing device for starch, which comprises a tower body, a plurality of tower plates are sequentially arranged in the tower body from top to bottom, a plurality of screen holes penetrating up and down are arranged on the tower plate, an overflow weir is arranged at the end of the tower plate, a water guide assembly for guiding clean water to the adjacent lower tower plate is connected to the lower end of the overflow weir, and the tower body is further connected with a water source recovery assembly for treating the wastewater generated after purification and returning to the tower body.

[0005] According to an embodiment of the utility model, six groups of tower plates are arranged, the six groups of tower plates are staggered and spaced, one end of the tower plate is connected with the tower body, and the other end of the tower plate has a gap with the inner wall of the tower body and forms a downcomer, and the liquid flows into the lower tower plate through the liquid inlet pipe channel.

[0006] According to an embodiment of the utility model, the water guide assembly comprises a water delivery plate connected with the overflow weir at the upper end, and a deflection plate connected with the inner wall of the tower body, the water delivery plate and the deflection plate are both inclined arc-shaped plates, the water delivery plate and the deflection plate are opposite in direction, the liquid surface exceeds the overflow weir and flows to the deflection plate along the water delivery plate, and the flow direction is changed at the deflection plate to flow to the lower tower plate.

[0007] According to an embodiment of the utility model, the lower end of the tower body is provided with an air inlet pipe, and the top end of the tower body is provided with an air outlet pipe.

[0008] According to an embodiment of the present application, the upper end of the tower body is provided with a water inlet pipe, and the bottom end of the tower body is provided with a water outlet pipe.

[0009] According to an embodiment of the present application, the water source recovery assembly comprises an evaporator for heating liquid to convert it into water vapor, the evaporator is connected with the water outlet pipe, the other end of the evaporator is connected with a gas guide pipe, and a heat exchanger for cooling the water vapor and converting it into condensed water is connected through the gas guide pipe, and the heat exchanger is connected with the water inlet pipe.

[0010] According to an embodiment of the present application, the water inlet pipe is connected with a clean water pipe and a one-way valve, and the one-way valve is arranged between the connection point of the clean water pipe and the water inlet pipe and the heat exchanger. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 The present application is a structural schematic diagram;

[0012] In the drawings: 1, tower body, 2, water inlet pipe, 3, tower plate, 4, overflow weir, 5, water delivery plate, 6, deflector, 7, air inlet pipe, 8, water outlet pipe, 9, evaporator, 10, gas guide pipe, 11, heat exchanger, 12, one-way valve, 13, clean water pipe, 14, air outlet pipe, 15, waste liquid pipe. DETAILED DESCRIPTION

[0013] In order to make the purpose, technical scheme and advantages of the present application clearer, the following will combine the drawings of the present application to further describe the present application. Figure 1 The present application will be described in more detail.

[0014] The following description is used to disclose the present application so that those skilled in the art can implement the present application. The preferred embodiments in the following description are only as examples, and those skilled in the art can think of other obvious modifications. The basic principles of the present application defined in the following description can be applied to other embodiments, modifications, improvements, equivalents and other technical solutions without departing from the spirit and scope of the present application.

[0015] Those skilled in the art should understand that in the disclosure of the specification, the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the above terms cannot be understood as a limitation on the present application.

[0016] It is to be understood that the term "one" is to be understood as "at least one" or "one or more" such that in one embodiment a quantity of one of the elements can be present while in another embodiment a quantity of more than one of the elements can be present. The term "one" or "the" does not exclude the presence of more than one element. It is further to be understood that the term "step" - if not explicitly indicated as "the step" - does not exclude the presence of more than one step.

[0017] The utility model provides a kind of waste gas sieve plate tower treatment device for starch, including tower body 1, the lower end of tower body 1 is provided with inlet pipe 7, inlet pipe 7 is connected with the device of last process, and the starch dryness generated fly enters the inside of tower body 1 from inlet pipe 7, a plurality of vent holes are provided on inlet pipe 7, the top of tower body 1 is provided with outlet pipe 14, waste gas is purified, and the starch dust and volatile organic matter in it are dissolved in water, and the gas meeting emission standard is discharged from outlet pipe 14, enters the next process or is directly discharged.The upper end of tower body 1 is provided with water inlet pipe 2, and clear water or treated reflux water is introduced into tower body 1 from water inlet pipe 2, and the bottom of tower body 1 is provided with water outlet pipe 8, and the dissolved starch dust and volatile organic matter waste water are discharged into water source recovery component for purification and recovery.

[0018] The utility model discloses a kind of waste gas sieve plate tower treatment device for starch, including tower body 1, the lower end of tower body 1 is provided with inlet pipe 7, inlet pipe 7 is connected with the device of last process, and the starch dryness generated fly enters the inside of tower body 1 from inlet pipe 7, a plurality of vent holes are provided on inlet pipe 7, the top of tower body 1 is provided with outlet pipe 14, waste gas is purified, and the starch dust and volatile organic matter in it are dissolved in water, and the gas meeting emission standard is discharged from outlet pipe 14, enters the next process or is directly discharged.The upper end of tower body 1 is provided with water inlet pipe 2, and clear water or treated reflux water is introduced into tower body 1 from water inlet pipe 2, and the bottom of tower body 1 is provided with water outlet pipe 8, and the dissolved starch dust and volatile organic matter waste water are discharged into water source recovery component for purification and recovery.

[0019] The utility model discloses a kind of waste gas sieve plate tower treatment device for starch, including tower body 1, the lower end of tower body 1 is provided with inlet pipe 7, inlet pipe 7 is connected with the device of last process, and the starch dryness generated fly enters the inside of tower body 1 from inlet pipe 7, a plurality of vent holes are provided on inlet pipe 7, the top of tower body 1 is provided with outlet pipe 14, waste gas is purified, and the starch dust and volatile organic matter in it are dissolved in water, and the gas meeting emission standard is discharged from outlet pipe 14, enters the next process or is directly discharged.The upper end of tower body 1 is provided with water inlet pipe 2, and clear water or treated reflux water is introduced into tower body 1 from water inlet pipe 2, and the bottom of tower body 1 is provided with water outlet pipe 8, and the dissolved starch dust and volatile organic matter waste water are discharged into water source recovery component for purification and recovery.

[0020] Six groups of dry tower plates 3 are arranged in the tower body 1 from top to bottom, the six groups of tower plates 3 are arranged in staggered intervals, one end of the tower plate 3 is connected with the tower body 1, and the other end of the tower plate 3 is spaced from the inner wall of the tower body 1 and forms a downcomer, and the liquid flows into the lower tower plate 3 through the liquid inlet pipe channel;

[0021] The tower plate 3 is provided with a plurality of sieve holes penetrating through the tower plate 3, the gas moves upward from the sieve holes, the gas is bubbled in the clean water, the contact efficiency of the gas and the clean water is enhanced, the purification is completed, and the purification efficiency is improved;

[0022] The end of the tower plate 3 is provided with an overflow weir 4, the overflow weir 4 has a certain height, is used for retaining the clean water on the tower plate 3, so as to facilitate the gas to be bubbled, when the liquid level of the clean water is higher than the overflow weir 4, the clean water flows to the next layer of tower plate 3 through the downcomer, the lower end of the overflow weir 4 is connected with a water guide assembly for guiding the clean water to the next layer of adjacent tower plate 3, the water guide assembly comprises a water feeding plate 5 connected with the overflow weir 4 at the upper end and a deflection plate 6 connected with the inner wall of the tower body 1, the water feeding plate 5 and the deflection plate 6 are both arc-shaped plates arranged in an inclined manner, the water feeding plate 5 and the deflection plate 6 are oppositely directed, the liquid surface exceeding the overflow weir 4 flows along the water feeding plate 5 to the deflection plate 6, changes the flow direction at the deflection plate 6 and flows to the next layer of tower plate 3, the arc-shaped water feeding plate 5 and the deflection plate 6 can reduce the impact force of the clean water flowing to the next layer of tower plate 3 and the gas bubbles generated due to the impact, do not affect the efficiency of the waste gas and the liquid to be bubbled, improve the purification efficiency.

[0023] The waste gas is purified by being fully contacted with the clean water, the starch dust and the volatile organic matter are dissolved in the clean water and then discharged from the water outlet pipe 8 into a water source recycling assembly, the water source recycling assembly comprises an evaporator 9 for heating the liquid to convert the liquid into water vapor, the evaporator 9 heats and evaporates the liquid, the concentrated residual liquid is discharged from the waste liquid pipe 15 for next step processing, the water vapor enters a heat exchanger 11 from a gas guide pipe 10, the heat exchanger 11 cools and condenses the water vapor into condensed water, at this time, the content of the starch dust and the volatile organic matter in the condensed water is greatly reduced, the heat exchanger 11 is connected with the water inlet pipe 2, the condensed water flows back into the inside of the tower body 1 and is recycled, the heat exchanger 11 is provided with a pressure relief valve to ensure the safety in use.

[0024] The water inlet pipe 2 is connected with a clean water pipe 13 and a one-way valve 12, the one-way valve 12 is arranged between the connection point of the clean water pipe 13 and the water inlet pipe 2 and the heat exchanger 11, the clean water pipe 13 can supplement water into the inside of the tower body 1, and the one-way valve 12 is used for placing the backflow water or the clean water from flowing back to the heat exchanger 11.

[0025] It should be noted that the terms "first", "second" and "third" in the utility model are only used for the purpose of description, do not represent any order and cannot be understood as indicating or implying relative importance, and the terms can be interpreted as names.

[0026] It will be appreciated by persons skilled in the art that the embodiments of the application described herein and shown in the accompanying drawings should be taken as example only and are not limiting of the application. The advantages of the application have been fully and effectively achieved. The function and structural principle of the application have been shown and described in the embodiments, and the embodiments of the application can be any deformation or modification without departing from the principle.

Claims

1. A waste gas sieve tray column treatment apparatus for starch characterized by: The application relates to a tower body, which is internally provided with a plurality of tower plates arranged from top to bottom, and the tower plates are provided with a plurality of up-and-down through holes; the end of the tower plate is provided with an overflow weir, the lower end of the overflow weir is connected with a water guide assembly for guiding clean water to the lower adjacent tower plate; the tower body is further connected with a water source recovery assembly for treating the generated waste water and returning the waste water into the tower body.

2. The waste gas screen tray column treatment apparatus for starch according to claim 1, characterized by: The tower plates are arranged in six groups, the six groups of tower plates are staggered and spaced, one end of the tower plate is connected with the tower body, and the other end of the tower plate is spaced from the inner wall of the tower body and forms a downcomer, and the liquid flows into the lower tower plate through the liquid inlet pipe channel.

3. The waste gas screen tray column treatment apparatus for starch according to claim 2, characterized by: The water guide assembly comprises a water guide plate connected with the overflow weir and a deflection plate connected with the inner wall of the tower body, the water guide plate and the deflection plate are both arc-shaped plates arranged in an inclined manner, the water guide plate and the deflection plate are oppositely arranged, the liquid surface is guided along the water guide plate to the deflection plate after exceeding the overflow weir, and the flow direction is changed at the deflection plate to flow to the lower tower plate.

4. The waste gas screen tray column treatment apparatus for starch according to claim 1, characterized by: The lower end of the tower body is provided with an air inlet pipe, and the top end of the tower body is provided with an air outlet pipe.

5. The waste gas screen tray column treatment apparatus for starch according to claim 1, characterized by: The upper end of the tower body is provided with a water inlet pipe, and the bottom end of the tower body is provided with a water outlet pipe.

6. The waste gas screen tray column treatment apparatus for starch according to claim 5, characterized by: The water source recovery assembly comprises an evaporator for heating the liquid to convert the liquid into water vapor, the evaporator is connected with the water outlet pipe, the other end of the evaporator is connected with an air guide pipe, the air guide pipe is connected with a heat exchanger for cooling the water vapor to convert the water vapor into condensed water, and the heat exchanger is connected with the water inlet pipe.

7. The waste gas screen tray column treatment apparatus for starch according to claim 6, characterized by: The water inlet pipe is connected with a clean water pipe and a one-way valve, and the one-way valve is arranged between the connection point of the clean water pipe and the water inlet pipe and the heat exchanger.

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