Ammonia absorption device for hydrolysis reaction in benzofuranone production

Abstract

The utility model provides a benzofuranone production hydrolysis reaction ammonia absorption device which comprises an absorption box, a plurality of partition plates staggered left and right are arranged on the inner wall of the absorption box, and the inside of the absorption box is divided into a snakelike absorption cavity, an air inlet pipe, an air outlet pipe, a feeding pipe, a first control valve and a discharging pipe through the partition plates. And a second control valve is arranged on the discharge pipe. According to the ammonia absorption device for the hydrolysis reaction in benzofuranone production, disclosed by the utility model, not only can the basic requirement on absorption treatment of ammonia gas generated in the hydrolysis reaction in benzofuranone production be met, but also the ammonia gas can be prevented from directly and quickly leaving an acid solution according to a vertical path; therefore, under the condition that the depth of the acid solution does not need to be increased, the treatment path of the ammonia gas is prolonged, so that the treatment efficiency of the ammonia gas is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field, and particularly relates to a benzofuranone production hydrolysis reaction ammonia absorption device. BACKGROUND

[0002] Benzofuranone is an important organic synthesis and pharmaceutical chemical intermediate, and is widely used in modification and derivation of pesticide molecules and bioactive molecules. In the production process of benzofuranone, ammonia absorption is a key step, wherein, an acidic solution (such as dilute sulfuric acid or hydrochloric acid) is usually used to absorb ammonia gas to generate ammonium salt.

[0003] The existing benzofuranone production hydrolysis reaction ammonia absorption device can meet the basic demand of absorbing and treating ammonia gas generated in the benzofuranone production hydrolysis reaction, but after entering the absorption device, the ammonia gas tends to quickly leave the acidic solution along the vertical path, resulting in that the treatment time and path of the ammonia gas in the acidic solution are relatively short, so that the absorption efficiency of the ammonia gas is poor, and the depth of the acidic solution in the absorption device needs to be deepened to fully meet the use demand of the people. SUMMARY

[0004] Therefore, the utility model provides a benzofuranone production hydrolysis reaction ammonia absorption device, which can not only meet the basic demand of absorbing and treating ammonia gas generated in the benzofuranone production hydrolysis reaction, but also can avoid that the ammonia gas directly and quickly leaves the acidic solution along the vertical path, thereby prolonging the treatment path of the ammonia gas without increasing the depth of the acidic solution, and improving the treatment efficiency of the ammonia gas.

[0005] To solve the above technical problems, the utility model adopts the technical scheme of a benzofuranone production hydrolysis reaction ammonia absorption device, which comprises an absorption box, a plurality of left-right staggered partitions are arranged on the inner wall of the absorption box, the inside of the absorption box is divided into a serpentine absorption cavity by the plurality of partitions, a gas inlet pipe is arranged on one side of the bottom of the absorption box and is in communication with the absorption cavity, a gas outlet pipe is further arranged on the top of the absorption box and is in communication with the absorption cavity, a feed pipe is further arranged on the top of the absorption box, a first control valve is further arranged on the feed pipe, a discharge pipe is further arranged on the bottom of the absorption box, and a second control valve is arranged on the discharge pipe.

[0006] As a further improvement of the utility model, an extension shaft of a telescopic push rod extends to the inside of the absorption cavity along the front-rear direction on the front side wall of the absorption box, and a scraping plate for scraping and cleaning the ammonium salt adhered to the plurality of partitions and the inner walls of the left and right side ends of the absorption box is arranged on the extension shaft of the telescopic push rod.

[0007] As a further improvement of the present application, a guide insertion tube is further arranged through the front side wall of the absorption box, a guide insertion rod is further arranged on the scraping plate and connected with the guide insertion tube, and a sealing ring is further arranged on the inner wall of the guide insertion tube and matched with the guide insertion rod.

[0008] As a further improvement of the present application, a transparent observation window is further arranged at the side end of the absorption box. Through the transparent observation window, the worker can conveniently check the inside condition of the absorption box.

[0009] As a further improvement of the present application, a supporting leg is further arranged at the bottom of the absorption box. Through the supporting leg, the device can be supported to avoid the direct contact between the bottom of the device and the ground.

[0010] As a further improvement of the present application, an extension plate is further arranged at the bottom side end of the supporting leg, and an anchor bolt is further arranged on the extension plate and used to connect with the ground. Through the extension plate and the anchor bolt, the device can be prevented from easily deviating and overturning during the working process.

[0011] Compared with the prior art, the present application has the following beneficial effects:

[0012] Firstly, after the ammonia gas is introduced into the absorption cavity through the air inlet pipe, the ammonia gas can move in the absorption cavity according to the serpentine path, the processing path of the ammonia gas by the acidic solution is prolonged without increasing the depth of the acidic solution, thereby improving the processing efficiency of the ammonia gas and more fully meeting the use requirements of people.

[0013] Secondly, through the telescopic push rod and the scraping plate, the ammonium salt adhered to the multiple partition plates and the inner walls of the left and right side ends of the absorption box can be conveniently scraped and cleaned, thereby more conveniently meeting the use requirements of people.

[0014] Thirdly, through the cooperation of the guide insertion tube, the guide insertion rod and the sealing ring, the scraping plate can be more stably horizontally moved in the front and back directions; through the sealing ring, the connection part of the guide insertion tube and the guide insertion rod has remarkable sealing property. BRIEF DESCRIPTION OF DRAWINGS

[0015] The present application will be further described in detail below in combination with the drawings and specific embodiments.

[0016] Figure 1 It is a structural schematic view of the present application;

[0017] Figure 2 It is a structural schematic view of the present application Figure 1 It is a partial enlarged structural schematic view of the present application;

[0018] Figure 3 It is a front view sectional structural schematic view of the present application;

[0019] Figure 4 It is a structure diagram of the telescopic push rod, the material scraping plate and the guide inserting rod of the utility model.

[0020] In the figure: 101, absorption box; 102, partition; 103, absorption cavity; 104, air inlet pipe; 105, air outlet pipe; 106, feed pipe; 107, first control valve; 108, discharge pipe; 109, second control valve; 201, telescopic push rod; 202, material scraping plate; 203, guide inserting cylinder; 204, guide inserting rod; 205, sealing ring; 206, transparent observation window; 207, supporting leg; 208, extension plate; 209, anchor bolt. DETAILED DESCRIPTION

[0021] In order to better understand the utility model, the content of the utility model is further clearly set forth below in conjunction with examples, but the protection content of the utility model is not limited to the examples below. In the following description, a large number of specific details are given in order to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details.

[0022] As shown in Figure 1 , 3 A kind of benzofuranone production hydrolysis reaction ammonia absorption device, including absorption box 101, multiple left and right staggered partition 102 are arranged on the inner wall of the absorption box 101, the inside of absorption box 101 is divided into serpentine absorption cavity 103 by multiple partition 102, the bottom side of absorption box 101 is provided with air inlet pipe 104 being communicated with absorption cavity 103, the top of absorption box 101 is also provided with air outlet pipe 105 being communicated with absorption cavity 103, the top of absorption box 101 is also provided with feed pipe 106, first control valve 107 is also provided on feed pipe 106, the bottom of absorption box 101 is also provided with discharge pipe 108, second control valve 109 is provided on discharge pipe 108.

[0023] Worker first opens first control valve 107, adds sufficient acidic solution to serpentine absorption cavity 103 by feed pipe 106, then closes first control valve 107, then ammonia gas generated in benzofuranone production hydrolysis reaction can be introduced into absorption cavity 103 by air inlet pipe 104, ammonia gas can run in acidic solution according to the serpentine path of absorption cavity 103 and be absorbed, avoid ammonia gas directly and quickly leave acidic solution according to vertical path, thereby extend the processing path of ammonia gas without increasing the depth of acidic solution, thereby improve the processing efficiency of ammonia gas;Gas after absorbing ammonia gas can leave absorption cavity 103 by air outlet pipe 105.

[0024] After a period of time, the first control valve 107 and the second control valve 109 are opened, and the waste liquid containing the ammonium salt is discharged from the discharge pipe to the absorption cavity 103.

[0025] According to another embodiment of the present application, as shown in Figure 1 、 4 , the front side wall of the absorption box 101 is further provided with a telescopic push rod 201 extending into the absorption cavity 103 in the front-rear direction, and the output shaft of the telescopic push rod 201 is provided with a scraping plate 202 for scraping and cleaning the ammonium salt adhered to the plurality of partitions 102 and the inner walls of the left and right side ends of the absorption box 101.

[0026] After a period of time, the first control valve 107 and the second control valve 109 are opened, and the waste liquid containing the ammonium salt is discharged from the discharge pipe to the absorption cavity 103.

[0027] According to another embodiment of the present application, as shown in Figure 1 、 2 , 4, the front side wall of the absorption box 101 is further provided with a guide insertion cylinder 203, and the scraping plate 202 is further provided with a guide insertion rod 204 connected with the guide insertion cylinder 203, and the inner wall of the guide insertion cylinder 203 is further provided with a sealing ring 205 matched with the guide insertion rod 204. During the forward and backward translation adjustment of the scraping plate 202 by the telescopic push rod 201, the guide insertion rod 204 can slide relative to the guide insertion cylinder 203, so that the scraping plate 202 can move smoothly in the front-rear direction, thereby more thoroughly scraping and cleaning the ammonium salt adhered to the plurality of partitions 102 and the inner walls of the left and right side ends of the absorption box 101, and the sealing ring 205 can make the connection between the guide insertion rod 204 and the guide insertion cylinder 203 have significant sealing property.

[0028] According to another embodiment of the present application, as shown in Figure 1 、 3 , the side end of the absorption box 101 is further provided with a transparent observation window 206. Through the transparent observation window 206, the worker can conveniently view the situation inside the absorption box 101, such as the amount of ammonium salt generated, so as to timely clean the ammonium salt in the absorption cavity 103.

[0029] According to another embodiment of the present application, as shown in Figure 1As shown, the bottom of the absorption box 101 is also provided with a supporting leg 207. Through the supporting leg 207, the device can be supported, avoiding the bottom of the device directly contacting the ground.

[0030] According to another embodiment of the present application, as shown in Figure 1 As shown, the bottom side end of the supporting leg 207 is also provided with an extension plate 208, and the extension plate 208 is also provided with an anchor bolt 209 for connecting with the ground. The worker can make the anchor bolt 209 pass through the extension plate 208 and connect with the ground, thereby avoiding the device from easily deviating and overturning during the working process.

[0031] The above is the preferred embodiment of the present application, it should be pointed out that, for those skilled in the technical field, without departing from the principles of the present application, can make a number of improvements and refinements, these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A benzofuranone production hydrolysis reaction ammonia absorption apparatus comprising an absorption tank (101), characterized by: The inner wall of the absorption box (101) is provided with a plurality of left-right staggered partitions (102), the inside of the absorption box (101) is divided into a serpentine absorption cavity (103) by the plurality of partitions (102), the bottom side of the absorption box (101) is provided with an air inlet pipe (104) connected with the absorption cavity (103), the top of the absorption box (101) is further provided with an air outlet pipe (105) connected with the absorption cavity (103), the top of the absorption box (101) is further provided with a feed pipe (106), the feed pipe (106) is further provided with a first control valve (107), the bottom of the absorption box (101) is further provided with a discharge pipe (108), the discharge pipe (108) is provided with a second control valve (109); The front side wall of the absorption box (101) is further provided with a telescopic push rod (201) extending into the inside of the absorption cavity (103) in the front-rear direction, the output shaft of the telescopic push rod (201) is provided with a scraping plate (202) for scraping and cleaning the ammonium salt adhered to the plurality of partitions (102) and the inner walls of the left and right side ends of the absorption box (101).

2. The benzofuranone production hydrolysis reaction ammonia absorbing apparatus according to claim 1, characterized by: The front side wall of the absorption box (101) is further provided with a guide insertion cylinder (203) penetrating through, the scraping plate (202) is further provided with a guide insertion rod (204) plugged and connected with the guide insertion cylinder (203), the inner wall of the guide insertion cylinder (203) is further provided with a sealing ring (205) matched with the guide insertion rod (204).

3. The benzofuranone production hydrolysis reaction ammonia absorbing apparatus according to claim 2, characterized by: The side end of the absorption box (101) is further provided with a transparent observation window (206).

4. The benzofuranone production hydrolysis reaction ammonia absorbing apparatus according to claim 3, characterized by: The bottom of the absorption box (101) is further provided with a supporting leg (207).

5. The benzofuranone production hydrolysis reaction ammonia absorbing apparatus according to claim 4, characterized by: The bottom side end of the supporting leg (207) is further provided with an extension plate (208), the extension plate (208) is further provided with a foundation bolt (209) connected with the ground. The bottom side end of the supporting leg (207) is further provided with an extension plate (208), the extension plate (208) is further provided with a foundation bolt (209) connected with the ground.

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