CN115046140A - Optimized high-efficiency residue discharge pipeline for furfural hydrolysis - Google Patents

Abstract

The invention discloses a furfural hydrolysis optimization and high-efficiency slag discharge pipeline, and relates to the technical field of furfural production. The invention includes a slag feed section, a connecting pipeline and a discharge section. The slag feed section is fixed on the other end of the connection pipeline, one end of which is fixedly connected with the discharge section, and a crushing mechanism is rotated on the inner wall of the top of the slag feed section. A pressurizing mechanism is fixedly connected to the outer wall of the top of the section road. In the invention, a piston, a hydraulic cylinder and a through pipe are used together to form an air pressure output device, which increases the impact force of the water flow and increases the flow rate in the slag discharge pipeline. The slag is diluted to increase the anti-corrosion ability, and the furfural slag is broken through the rotation of the fan blade and the crushing hole. At the same time, the built-in connecting ring increases the smoothness of the bend connection to prevent clogging, so that the furfural hydrolysis optimizes the efficient slag discharge pipeline. , increase the slag discharge efficiency, reduce the cleaning time, and increase the service life.

Description

An optimized and efficient slag discharge pipeline for furfural hydrolysis

technical field

The invention belongs to the technical field of furfural production, and in particular relates to a furfural hydrolysis optimization and high-efficiency slag discharge pipeline.

Background technique

Furfural is an organic compound, colorless and transparent oily liquid with a special odor similar to benzaldehyde. It is mainly used as an industrial solvent, and can also be used to prepare furfuryl alcohol, furoic acid, tetrahydrofuran, valerolactone, pyrrole, tetrahydropyrrole, etc. In the production of furfural, the efficiency of hydrolysis and slag discharge and the residual amount in the hydrolysis kettle are the key factors affecting the production output and the key guarantee for the safety of the hydrolysis kettle. The uncleanness of the slag discharge in the hydrolysis kettle directly affects the stability control of the hydrolysis process in the next step , the failure of the hydrolysis kettle to discharge slag is likely to cause the pressure in the hydrolysis kettle to be too high, resulting in the risk of explosion. Therefore, the slag discharge in the hydrolysis of furfural is the guarantee of safe and efficient production, and the efficiency of the slag discharge depends on the slag discharge. The rationality, quality and efficiency of the pipeline, but it still has the following disadvantages in actual use:

1. Sulfuric acid medium will be added in the process of furfural hydrolysis, which is corrosive. The slag discharge pipeline is prone to corrosive phenomenon when corrosive furfural slag is washed for a long time. The existing furfural hydrolysis optimization and efficient slag discharge pipeline can resist less corrosive, resulting in lower service life;

2. The laying route of the slag discharge pipeline is usually winding and rugged, and it is very easy to block the pipe connection. The existing furfural hydrolysis optimizes the high-efficiency slag discharge pipeline, which cannot reduce the volume of furfural slag inside the slag discharge pipeline. It is not easy to be blocked at the pipe connection, so that the slag discharge pipeline is prone to blockage, which in turn affects the slag discharge efficiency;

3. The flow velocity in the slag discharge pipeline has a great relationship with the slag discharge flow rate of the hydrolysis kettle. When the slag discharge flow rate of the hydrolysis kettle is low, the flow velocity in the slag discharge pipeline will decrease accordingly. The existing furfural hydrolysis optimization and efficient slag discharge pipeline , the flow velocity in the slag discharge pipeline cannot be increased, resulting in an increase in the slag discharge time, which in turn increases the net discharge time.

Therefore, the existing furfural hydrolysis optimization and high-efficiency slag discharge pipeline cannot meet the needs in actual use, so there is an urgent need for improved technologies on the market to solve the above problems.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a furfural hydrolysis optimization and high-efficiency slag discharge pipeline, which introduces clean water to the through pipe through an external water pipe, and then works through the hydraulic cylinder to make the hydraulic rod drive the piston to reciprocate along the inside of the through pipe, reducing the size of the inside of the through pipe. The gas volume increases the pressure of the water in the pipe, so that the impact force of the pressurized water accelerates the flow rate in the slag discharge pipeline, and dilutes the furfural slag to reduce its corrosiveness and viscosity. The anti-corrosion ability of the slag pipe, elbow and discharge pipe, through the impact of the pressurized water on the fan blade, makes the fan blade rotate along the positioning rod through the rotating block, beat and crush the furfural slag, and at the same time cooperate with the crushing hole to increase the crushing capacity of the fan blade At the same time, it cooperates with the built-in connecting ring to increase the smoothness of the elbow connection between the elbow and the discharge pipe to prevent clogging, so that the furfural hydrolysis optimizes the efficient slag discharge pipeline, increases the slag discharge efficiency, reduces the cleaning time, and increases the service life. .

In order to solve the above-mentioned technical problems, the present invention is achieved through the following technical solutions:

The present invention is a furfural hydrolysis optimized and high-efficiency slag discharge pipeline, which includes a slag feed section, a connection pipeline and a discharge section. A crushing mechanism is rotated on the inner wall of the top of the slag feeding section, and a pressurizing mechanism is fixedly connected to the outer wall of the top of the slag feeding section;

The slag feeding section path includes a slag feeding pipe with a positioning rod fixedly connected to the inner wall of the top, n fixed rods are evenly fixed on the outer cylindrical surface of the top of the positioning rod, n≥3, and the connecting pipeline includes one end fixedly connected. For elbows with built-in connecting rings, the position of the built-in connecting rings is fixed through the elbows;

One end of the elbow is welded to one end of the slag inlet pipe, the discharge section includes a discharge pipe with a built-in groove at one end, one end of the discharge pipe is welded to the other end of the elbow, and the built-in connecting ring is clamped and fixed by the built-in groove. On the inner wall of one end of the discharge pipe, a slag discharge pipeline is formed by the combined use of the slag feed pipe, the elbow pipe and the discharge pipe. The built-in groove is convenient for placing the built-in connecting ring, and the built-in connecting ring is used to increase the elbow connection between the elbow and the discharge pipe. smoothness to prevent furfural slag from clogging at the bend connection;

The pressurizing mechanism includes a hydraulic cylinder with a piston fixedly connected to the output end, and a through pipe, the piston slides inside the through pipe, and the crushing mechanism includes a rotating block with a rotating hole opened along its vertical centerline. The rotating block It rotates on the outer cylindrical surface in the middle of the positioning rod through the rotating hole, and n fan blades are evenly fixed on the outer cylindrical surface of the rotating block. The piston, the hydraulic cylinder and the through pipe are used together to form an air pressure output device to increase the impact force of the water flow. Improve the flow rate in the slag discharge pipeline and reduce the cleaning time. The rotating hole and the positioning rod are used together to facilitate the rotation of the rotating block, so that the fan blade completes the rotation to beat and crush the large volume of furfural slag to further prevent clogging.

Further, one end of the n fixing rods away from the positioning rods is fixed on the inner wall of the top of the slag feed pipe, and the positioning rods are fixed on the top of the slag feed pipe through the fixing rods, and the position of the positioning rods is determined by the combination of the fixing rods and the slag feed pipe. to be fixed.

Further, the inner walls of the slag feed pipe, the elbow and the discharge pipe are all provided with a wear-resistant ceramic lining layer, and the anti-corrosion capability of the slag feed pipe, the elbow and the discharge pipe is increased by the wear-resistant ceramic lining layer.

Further, a water inlet hole is provided on the outer cylindrical surface of the top of the slag feed pipe, and two limit rings are evenly fixed on the outer cylindrical surface of the middle part of the positioning rod. The position is limited to prevent the rotating block from shifting during rotation.

Further, a hydraulic rod slides inside one end of the hydraulic cylinder, and one end of the hydraulic rod is fixed in the middle of one side of the piston. The hydraulic cylinder works so that the hydraulic rod drives the piston to slide back and forth along the inside of the through pipe to make a reciprocating motion.

Further, a support rod is fixed in the middle of the bottom end of the hydraulic cylinder, and one end of the support rod is fixed on the outer cylindrical surface of the top of the slag feed pipe, and the position of the hydraulic cylinder is fixed by the cooperative use of the slag feed pipe and the support rod.

Further, an external water pipe is fixedly connected to the top of the through pipe, and a water inlet pipe is fixedly connected to one end of the through pipe. Then, it is discharged to the inside of the slag inlet pipe through the water inlet pipe to dilute the furfural slag, reduce its corrosiveness and viscosity, and increase the flow rate in the slag discharge pipe.

Further, the cross-sections of the n fan blades are all trapezoidal, and a plurality of crushing holes are evenly opened on the surfaces of the n fan blades, and the crushing capacity of the fan blades is increased through the crushing holes.

Further, a rotating shaft is rotated on the inner wall of the top of the slag feed pipe, and n rotating plates are evenly fixed on the outer cylindrical surface of the middle of the rotating shaft, and n crushing holes are evenly opened on the surfaces of the n rotating plates, The water flow impinges on the rotating plate, so that the rotating plate rotates along the rotating shaft, and at the same time, the furfural residue is crushed by rotating the rotating plate and matching the crushing holes.

The present invention has the following beneficial effects:

1. In the present invention, clean water is introduced into the slag feed pipe through an external water pipe and pressurized along the through pipe, and then discharged to the inside of the slag feed pipe through the water inlet pipe to dilute the furfural slag, reduce its corrosiveness and viscosity, and cooperate with the wear-resistant ceramic lining to further increase The anti-corrosion ability of the slag inlet pipe, elbow pipe and discharge pipe makes the furfural hydrolysis optimized and efficient slag discharge pipeline, with better corrosion resistance and longer service life.

2. In the present invention, the fan blade is impacted by pressure, so that the fan blade rotates along the positioning rod through the rotating block to beat and crush the furfural residue, and at the same time cooperate with the crushing hole to increase the crushing capacity of the fan blade, reduce the volume of the furfural residue, and prevent clogging , by cooperating with the built-in connecting ring to increase the smoothness of the elbow connection between the elbow and the discharge pipe, and further achieve the purpose of preventing clogging, so that the furfural hydrolysis optimizes the high-efficiency slag discharge pipeline, which can reduce the furfural residue in the slag discharge pipeline. It is not easy to be blocked at the pipe connection, so as to prevent the blockage of the slag discharge pipeline and increase the slag discharge efficiency.

3. The present invention makes the hydraulic rod drive the piston to reciprocate along the inside of the through-pipe through the operation of the hydraulic cylinder, reducing the gas volume inside the through-pipe and increasing the pressure of the water in the through-pipe, so that the impact force of the pressurized water accelerates the flow velocity in the slag discharge pipeline. , so that the furfural hydrolysis optimizes the high-efficiency slag discharge pipeline, reduces the increase of the slag discharge time, and reduces the net discharge time.

Description of drawings

1 is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

Fig. 2 is the positional relationship diagram of the slag feeding section, the pressurizing mechanism and the crushing mechanism of the present invention;

Fig. 3 is the structural schematic diagram of the slag feeding section of the present invention;

Fig. 4 is the positional relationship diagram of the connecting pipeline and the discharge section of the present invention

Figure 5 is a schematic diagram of the structure of the connecting pipeline of the present invention

Figure 6 is a schematic diagram of the structure of the discharge section of the present invention

Figure 7 is an exploded view of the structure of the pressurizing mechanism of the present invention

FIG. 8 is a schematic view of the structure of the crushing mechanism of the present invention

FIG. 9 is a schematic structural diagram of Embodiment 2 of the present invention.

In the accompanying drawings, the list of components represented by each number is as follows:

100, slag feed section road; 101, slag feed pipe; 102, positioning rod; 103, limit ring; 104, fixed rod; 105, water inlet; 200, connecting pipeline; 201, elbow; 202, built-in connection Ring; 300, discharge section; 301, discharge pipe; 302, built-in groove; 303, wear-resistant ceramic lining; 400, pressurizing mechanism; 401, hydraulic cylinder; 402, piston; 403, through pipe; 404, external connection Water pipe; 405, water inlet pipe; 406, hydraulic rod; 407, support rod; 500, crushing mechanism; 501, rotating block; 502, fan blade; 503, crushing hole; 504, rotating hole; 600, rotating shaft; 700, rotating plate; 800, break the hole.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Example 1

1-9, the present invention is a furfural hydrolysis optimized and efficient slag discharge pipeline, including a slag feed section 100, a connecting pipeline 200 and a discharge section 300, and the slag feed section 100 is fixed at one end and connected On the other end of the connecting pipeline 200 with the discharge section 300, a crushing mechanism 500 is rotated on the inner wall of the top of the slag feed section 100, and a pressurizing mechanism 400 is fixedly connected to the top outer wall of the slag feed section 100;

The slag feeding section road 100 includes a slag feeding pipe 101 with a positioning rod 102 fixedly connected to the inner wall of the top, n fixed rods 104 are evenly fixed on the outer cylindrical surface of the top of the positioning rod 102, n≥3, and the connecting pipeline 200 includes one end fixedly connected There is an elbow 201 with a built-in connecting ring 202, and the position of the built-in connecting ring 202 is fixed by the elbow 201;

One end of the elbow 201 is welded to one end of the slag inlet pipe 101 , and the discharge section 300 includes a discharge pipe 301 with a built-in groove 302 at one end. It is fixed on the inner wall of one end of the discharge pipe 301, and a slag discharge pipeline is formed by using the slag feed pipe 101, the elbow 201 and the discharge pipe 301 together. The smoothness of the bend connection between the discharge pipe 301 and the discharge pipe 301 prevents furfural slag from clogging at the bend connection;

The pressurizing mechanism 400 includes a hydraulic cylinder 401 with a piston 402 fixedly connected to its output end, a through pipe 403, the piston 402 slides inside the through pipe 403, and the pulverizing mechanism 500 includes a rotating block 501 with a rotating hole 504 opened along its vertical centerline. , the rotating block 501 is rotated on the outer cylindrical surface in the middle of the positioning rod 102 through the rotating hole 504, and n fan blades 502 are evenly fixed on the outer cylindrical surface of the rotating block 501, and the piston 402, the hydraulic cylinder 401 and the through pipe 403 are used together An air pressure output device is formed to increase the impact force of the water flow, increase the flow rate in the slag discharge pipeline, and reduce the cleaning time. The rotating hole 504 and the positioning rod 102 are used together to facilitate the rotation of the rotating block 501, so that the fan blade 502 can complete the rotation of the large-volume furfural. The slag is beaten and crushed to further prevent clogging.

As shown in FIG. 3-6 , the ends of the n fixing rods 104 away from the positioning rods 102 are all fixed to the inner wall of the top of the slag feed pipe 101 , and the positioning rods 102 are fixed on the top of the slag feed pipe 101 through the fixing rods 104 , and the fixing rods 104 It is used in conjunction with the slag feed pipe 101 to fix the position of the positioning rod 102. The inner walls of the slag feed pipe 101, the elbow 201 and the discharge pipe 301 are all provided with a wear-resistant ceramic lining layer 303. The anti-corrosion ability of the slag pipe 101, the elbow 201 and the discharge pipe 301, a water inlet hole 105 is opened on the outer cylindrical surface of the top of the slag inlet pipe 101, and two limit rings 103 are evenly fixed on the outer cylindrical surface of the middle part of the positioning rod 102 , the position of the rotating block 501 is limited by the cooperating use of the positioning rod 102 and the limiting ring 103 to prevent the rotating block 501 from shifting during rotation.

As shown in Figures 2-3 and 7, a hydraulic rod 406 slides inside one end of the hydraulic cylinder 401, and one end of the hydraulic rod 406 is fixed in the middle of one side of the piston 402. The hydraulic cylinder 401 works so that the hydraulic rod 406 drives the piston 402 along the The inside of the through pipe 403 slides back and forth to make a reciprocating motion. A support rod 407 is fixed in the middle of the bottom end of the hydraulic cylinder 401, and one end of the support rod 407 is fixed on the outer cylindrical surface of the top of the slag feed pipe 101. Through the slag feed pipe 101 and the support rod 407 The position of the hydraulic cylinder 401 is fixed when used together, the furfural slag is discharged into the slag inlet pipe 101 through the hydrolysis kettle, and clean water is introduced into the through pipe 403 through the external water pipe 404, and then the hydraulic cylinder 401 works so that the hydraulic rod 406 drives the piston 402 along the edge. Reciprocating movement inside the through pipe 403 reduces the gas volume inside the through pipe 403 and increases the pressure of the water in the through pipe 403 , so that the pressurized water is discharged to the inside of the slag intake pipe 101 along the water inlet pipe 405 .

As shown in Figures 2-3 and 7, the top of the through pipe 403 is fixedly connected with an external water pipe 404, and one end of the through pipe 403 is fixedly connected with a water inlet pipe 405. The water inlet pipe 405 extends through the water inlet hole 105 to the inside of the slag inlet pipe 101. , introduce clean water through the external water pipe 404 and pressurize it along the through pipe 403 and then discharge it to the inside of the slag inlet pipe 101 through the water inlet pipe 405 to dilute the furfural slag to reduce its corrosiveness and viscosity. At the same time, the hydraulic cylinder 401 works to make the hydraulic rod 406 drives the piston 402 to reciprocate along the inside of the through-pipe 403, reducing the gas volume inside the through-pipe 403 and increasing the pressure of the water in the through-pipe 403, so that the impact force of the pressurized water accelerates the flow velocity in the slag discharge pipeline and reduces the cleaning time .

As shown in Figures 2-3 and 7-8, the cross-sections of the n fan blades 502 are all trapezoids, and the surfaces of the n fan blades 502 are uniformly provided with a plurality of crushing holes 503, and the fan blades are increased through the crushing holes 503. The crushing capacity of 502 is impacted by the pressurized water on the fan blade 502, so that the fan blade 502 rotates along the positioning rod 102 through the rotating block 501 to beat and crush the furfural residue, and at the same time cooperate with the crushing hole 503 to increase the crushing capacity of the fan blade 502, reduce Small volume of furfural residue to prevent clogging.

Embodiment 2

Please refer to FIG. 9 , a rotating shaft 600 is rotated on the inner wall of the top of the slag feed pipe 101 , and n rotating plates 700 are evenly fixed on the outer cylindrical surface in the middle of the rotating shaft 600 , and n rotating plates 700 are evenly opened on the surface of the n rotating plates 700 . There are breaking holes 800 , and the rotating plate 700 is rotated along the rotating shaft 600 by the water flow impacting the rotating plate 700 .

working principle:

The furfural slag is discharged to the inside of the slag feed pipe 101 through the hydrolysis kettle, and the clean water is introduced into the inside of the through pipe 403 through the external water pipe 404, and then the hydraulic cylinder 401 works so that the hydraulic rod 406 drives the piston 402 to reciprocate along the inside of the through pipe 403, reducing the The internal gas volume of the through pipe 403 increases the pressure of the water in the through pipe 403, so that the pressurized water is discharged to the inside of the slag intake pipe 101 along the water inlet pipe 405, and impacts the fan blade 502, so that the fan blade 502 passes through the rotating block 501 along the positioning rod 102 rotates to beat and crush the furfural slag, and at the same time cooperate with the crushing hole 503 to increase the crushing capacity of the fan blade 502, reduce the volume of the furfural slag, and prevent clogging. The smoothness of the junction can further prevent clogging, and at the same time, through the external water pipe 404 to introduce clean water along the through pipe 403 and pressurize it, and then discharge it to the inside of the slag inlet pipe 101 through the water inlet pipe 405 to dilute the furfural slag and reduce its corrosion. The anti-corrosion ability of the slag inlet pipe 101, the elbow pipe 201 and the discharge pipe 301 is enhanced by the wear-resistant ceramic lining layer 303. At the same time, the hydraulic cylinder 401 works so that the hydraulic rod 406 drives the piston 402 along the inside of the through pipe 403. The reciprocating motion reduces the gas volume inside the through-pipe 403 and increases the pressure of the water in the through-pipe 403, so that the impact force of the pressurized water accelerates the flow velocity in the slag discharge pipeline and reduces the cleaning time.

The above are only preferred embodiments of the present invention, and do not limit the present invention. Any modification to the technical solutions recorded in the foregoing embodiments, and equivalent replacement of some of the technical features therein, any modification, equivalent replacement, or improvement made shall be belong to the protection scope of the present invention.

Claims (9)

1. A furfural hydrolysis optimized high-efficiency slag discharge pipeline, comprising a slag feed section road (100), a connecting pipeline (200) and a discharge section road (300), characterized in that: the slag feed section road (100) is fixed A crushing mechanism (500) is rotated on the inner wall of the top of the slag feed section (100), and the top outer wall of the slag feed section (100) is fixedly connected to the other end of the connecting pipeline (200) with the discharge section (300) at one end. A pressurizing mechanism (400) is fixedly connected; The slag feeding section road (100) includes a slag feeding pipe (101) with a positioning rod (102) fixedly connected to the top inner wall, and n fixed rods (104) are evenly fixed on the top outer cylindrical surface of the positioning rod (102). ), n≥3, the connecting pipeline (200) includes an elbow (201) fixedly connected with a built-in connecting ring (202) at one end; One end of the elbow (201) is welded to one end of the slag inlet pipe (101), the discharge section (300) includes a discharge pipe (301) with a built-in groove (302) at one end, and one end of the discharge pipe (301) is welded to the other end of the elbow (201), and the built-in connecting ring (202) is clamped and fixed to the inner wall of one end of the discharge pipe (301) through the built-in groove (302); The pressurizing mechanism (400) includes a hydraulic cylinder (401) with a piston (402) fixed at the output end, and a through pipe (403), the piston (402) slides inside the through pipe (403), and the crushing mechanism ( 500) comprises a rotating block (501) with a rotating hole (504) formed therein along its vertical centerline, the rotating block (501) rotates on the central outer cylindrical surface of the positioning rod (102) through the rotating hole (504), and N fan blades (502) are evenly fixed on the outer cylindrical surface of the rotating block (501). 2. A furfural hydrolysis optimized and efficient slag discharge pipeline according to claim 1, characterized in that: one end of the n fixing rods (104) away from the positioning rod (102) is fixed to the slag feed pipe (101) The inner wall of the top, and the positioning rod (102) is fixed on the top of the slag feed pipe (101) through the fixing rod (104). 3. A furfural hydrolysis optimized and efficient slag discharge pipeline according to claim 1, characterized in that: the inner walls of the slag feed pipe (101), the elbow pipe (201) and the discharge pipe (301) are all provided with wear-resistant Ceramic liner (303). 4. A furfural hydrolysis optimized and efficient slag discharge pipeline according to claim 1, characterized in that: a water inlet hole (105) is provided on the outer cylindrical surface of the top of the slag inlet pipe (101), and the positioning rod (102) Two limit rings (103) are evenly fixed on the outer cylindrical surface of the middle part. 5. A furfural hydrolysis optimized and efficient slag discharge pipeline according to claim 1, characterized in that: one end of the hydraulic cylinder (401) slides a hydraulic rod (406) inside, and one end of the hydraulic rod (406) is fixed on the The middle of one side of the piston (402). 6. A furfural hydrolysis optimized and efficient slag discharge pipeline according to claim 1, characterized in that: a support rod (407) is fixedly connected to the middle of the bottom end of the hydraulic cylinder (401), and one end of the support rod (407) It is fixed on the outer cylindrical surface of the top of the slag feed pipe (101). 7. The furfural hydrolysis optimization and high-efficiency slag discharge pipeline according to claim 4, characterized in that: an external water pipe (404) is fixedly connected to the top of the through pipe (403), and one end of the through pipe (403) is fixedly connected There is a water inlet pipe (405), and the water inlet pipe (405) extends to the inside of the slag inlet pipe (101) through the water inlet hole (105). 8. The furfural hydrolysis optimization and high-efficiency slag discharge pipeline according to claim 1, characterized in that: the cross sections of the n fan blades (502) are all trapezoidal, and the surfaces of the n fan blades (502) are all trapezoidal. A plurality of crushing holes (503) are evenly opened. 9. The furfural hydrolysis optimization and high-efficiency slag discharge pipeline according to claim 1, characterized in that: a rotating shaft (600) is rotated on the inner wall of the top of the slag feeding pipe (101), and the rotating shaft (600) has a central outer surface. N rotating plates (700) are evenly fixed on the cylindrical surface, and n breaking holes (800) are evenly opened on the surfaces of the n rotating plates (700).

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