Anti-blocking reaction kettle applied to corncob hydrolysis reaction

Abstract

The utility model discloses an anti-blocking reaction kettle applied to corncob hydrolysis reaction, which belongs to the field of chemical production, and comprises a kettle body, an exhaust port is arranged at the upper end of the kettle body, a communicating pipe is mounted on the exhaust port, an exhaust valve is mounted on the communicating pipe, one end of the communicating pipe is connected with the exhaust port, and the other end of the communicating pipe is connected with the exhaust valve. The other end of the communicating pipe is provided with a swirler which enables gas, liquid and corncobs ejected from the exhaust port to be rapidly separated, the swirler is provided with a feeding pipe, and the feeding pipe is connected with the swirler in a tangent feeding mode or an involute feeding mode or a spiral feeding mode. One end, far away from the swirler, of the feeding pipe is connected with the communicating pipe, a gas overflow port is formed in the upper end of the swirler, and a solid-liquid recovery port is formed in the lower end of the swirler, the exhaust device can be effectively prevented from being blocked, and it is guaranteed that the exhaust efficiency can be kept at the normal level.

Description

Technical Field

[0001] The utility model relates to the field of chemical production, in particular to an anti-blocking reaction kettle used for corncob hydrolysis reaction. Background Art

[0002] The reactor is the core reaction equipment for extracting xylose by hydrolyzing corn cobs. During the hydrolysis process, the temperature and pressure in the reactor gradually rise, and a large amount of non-condensable gas remaining in the reactor will accumulate on the top of the reactor, causing the actual temperature in the reactor to be lower than the temperature corresponding to the pressure value displayed on the pressure gauge on the top of the reactor. This phenomenon is commonly known as "false pressure". False pressure will reduce the heat transfer effect in the reactor, and then reduce the hydrolysis efficiency.

[0003] Therefore, in order to ensure the normal operation of the reactor, the reactor is generally equipped with an exhaust device to exhaust the non-condensable gas in the reactor. Since the air pressure in the reactor is quite different from that in the outside world, the exhaust process will cause a drastic change in the air pressure in the reactor. Usually, some liquid with corn cobs will spray out from the reactor. The entrained lumps of corn cobs can easily cause the pipe of the emptying device to be blocked. When cleaning, the valve needs to be manually disassembled, and the pipe needs to be checked and cleaned section by section, which increases the maintenance cost and affects the production efficiency.

[0004] In order to prevent the block of corn cobs from clogging the exhaust pipe, the existing technology usually installs a detachable filter at the exhaust port. However, the filter still needs to be cleaned and replaced regularly. Since the hydrolysis process is in a high temperature and high pressure environment, once the corn cobs ejected during the exhaust process are large in volume or large in number and cause the filter to be blocked, the filter cannot be cleaned immediately, affecting the exhaust efficiency and thus affecting normal hydrolysis.

[0005] Therefore, designing an exhaust device that will not be blocked for the xylose hydrolysis reactor has important practical significance for ensuring the smooth progress of the xylose hydrolysis reaction, improving production efficiency and reducing safety risks. Utility Model Content

[0006] In order to solve the problems existing in the prior art, the utility model provides an anti-blocking reactor for corn cob hydrolysis reaction, which can effectively avoid the blockage of the exhaust device and ensure that the exhaust efficiency can maintain a normal level.

[0007] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: an anti-blocking reactor used for corn cob hydrolysis reaction, comprising a reactor body, an exhaust port is arranged at the upper end of the reactor body, a connecting pipe is installed on the exhaust port, an exhaust valve is installed on the connecting pipe, one end of the connecting pipe is connected to the exhaust port, and the other end of the connecting pipe is installed with a cyclone for quickly separating the gas, liquid and corn cob ejected from the exhaust port;

[0008] The cyclone is provided with a feed pipe for guiding the gas, liquid and corn cob leaving the kettle body. The feed pipe is connected to the cyclone in a tangential feeding manner, an involute feeding manner or a spiral feeding manner. One end of the feed pipe away from the cyclone is connected to the connecting pipe. A gas overflow port is provided at the upper end of the cyclone, and a solid-liquid recovery port is provided at the lower end of the cyclone.

[0009] Preferably, the cyclone includes a cylinder and a transition cone, the transition cone is installed at the lower end of the cylinder, the gas overflow port is located at the upper end of the cylinder, the solid-liquid recovery port is located at the lower end of the transition cone, and the feed pipe is installed on the cylinder.

[0010] Preferably, an overflow pipe is installed on the gas overflow port, one end of the overflow pipe is inserted into the cylinder, and the other end of the overflow pipe extends out from the upper end of the gas overflow port.

[0011] Preferably, the overflow pipe and the gas overflow port are connected together by welding.

[0012] Preferably, one end of the transition cone is connected to the cylinder, and the other end of the transition cone is provided with a discharge pipe.

[0013] Preferably, a transparent window is provided at one end of the discharge pipe connected to the transition cone pipe.

[0014] Preferably, a quick-opening valve is installed at the lower end of the discharge pipe.

[0015] Preferably, the connecting pipe is formed by splicing two short pipes, the exhaust valve is installed between the two short pipes, and the ends of the two short pipes away from the exhaust valve are detachably connected to the feed pipe and the exhaust port respectively.

[0016] Preferably, the exhaust valve is a flange valve, and the exhaust valve and the short pipe are detachably connected together by bolts.

[0017] Preferably, the kettle body, the connecting pipe, the cyclone, the exhaust valve and the quick-opening valve are all made of corrosion-resistant stainless steel material.

[0018] The beneficial effects of the utility model are as follows:

[0019] 1. The utility model connects the kettle body with the cyclone through a connecting pipe. The corn cob particles and acidic liquid sprayed from the kettle body will not stay in the pipe when passing through the connecting pipe, but will quickly enter the cyclone under the entrainment of the gas, and then quickly separate from the gas under the action of centrifugal force, and be discharged from the solid-liquid recovery port at the bottom of the cyclone, which effectively avoids the situation that the exhaust device is blocked by the block corn cob and reduces the later maintenance cost of the device.

[0020] 2. The utility model provides a transparent window at the connection between the transition cone pipe and the discharge pipe to observe the discharge of liquid and solid, and a quick-opening valve is installed at the lower end of the discharge pipe so that the blocky corncob residue and liquid settled to the bottom of the cyclone can be discharged out of the device through the discharge pipe in time.

[0021] 3. The utility model arranges the connecting pipe into multiple sections and detachably connects the exhaust valve, the exhaust port and the feed pipe, which is convenient for later maintenance and replacement, shortens maintenance time and reduces maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The utility model is a side view of an anti-blocking reaction kettle used for corncob hydrolysis reaction.

[0023] In the figure: 1-kettle body, 2-exhaust port, 3-short pipe, 4-overflow pipe, 5-gas overflow port, 6-exhaust valve, 7-cylinder body, 8-transition cone pipe, 9-transparent window, 10-discharge pipe, 11-quick opening valve, 12-solid-liquid recovery port, 13-feed pipe. DETAILED DESCRIPTION

[0024] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0025] like Figure 1 The anti-blocking reactor for corncob hydrolysis reaction shown in the figure comprises a reactor body 1, and an exhaust port 2 is arranged at the upper end of the reactor body 1. Since the non-condensable gas accumulated inside the reactor body 1 usually accumulates at the top of the reactor body 1, the exhaust port 2 is arranged at the upper end of the reactor body 1 for convenient exhaust. A connecting pipe is installed on the exhaust port 2, one end of the connecting pipe is connected to the exhaust port 2, and the other end of the connecting pipe is installed with a cyclone for quickly separating the gas, liquid and corncob ejected from the exhaust port 2.

[0026] Specifically, part of the non-condensable gas discharged from the exhaust port 2 will mix with the corncob particles and the acidic liquid and be sprayed out in the form of foam. If there is more foam sprayed and the defoaming time is longer, the speed of the non-condensable gas being discharged from the kettle body 1 will be reduced. A cyclone is connected to the end of the connecting pipe to achieve rapid defoaming through centrifugal force, and at the same time, the non-condensable gas can be quickly separated from the acidic liquid and corncob particles, thereby improving the exhaust efficiency of the device.

[0027] The utility model is provided with an exhaust valve 6 installed on the connecting pipe, and the exhaust time of the reactor is controlled by opening and closing the exhaust valve 6. The connecting pipe is formed by splicing two short pipes 3, and the exhaust valve 6 is installed between the two short pipes 3. The exhaust valve 6 is a flange valve, and one end of the two short pipes 3 is detachably connected to the exhaust valve 6 by bolts. A feed pipe 13 for guiding the gas, liquid and corn cob leaving the reactor body 1 is installed on the cyclone, and the feed pipe 13 is connected to the cyclone in a tangential feeding mode, an involute feeding mode or a spiral feeding mode, and the other ends of the two short pipes 3 are detachably connected to the feed pipe 13 and the exhaust port 2 respectively;

[0028] Specifically, when the kettle body 1 is exhausted, the connecting pipe is the only way for the ejected material in the kettle to pass through. The ejected material in the kettle will be mixed with high-temperature acidic liquid, which will corrode the connecting pipe and the exhaust valve 6 installed on the connecting pipe. The connecting pipe is arranged into multiple sections and is detachably connected to the exhaust valve 6, the exhaust port 2, and the feed pipe 13. This facilitates later maintenance and replacement, shortens maintenance time, and reduces maintenance costs.

[0029] The utility model provides a gas overflow port 5 at the upper end of the cyclone, an overflow pipe 4 is installed on the gas overflow port 5, the overflow pipe 4 and the gas overflow port 5 are connected together by welding, one end of the overflow pipe 4 is inserted into the cyclone, and the other end of the overflow pipe 4 extends from the upper end of the gas overflow port 5.

[0030] The lower end of the cyclone of the utility model is provided with a solid-liquid recovery port 12 for recovering the corn cobs separated from the gas. The cyclone comprises a cylinder 7 and a transition cone 8. The transition cone 8 is installed at the lower end of the cylinder 7. The gas overflow port 5 is located at the upper end of the cylinder 7. The solid-liquid recovery port 12 is located at the lower end of the transition cone 8. A feed pipe 13 is installed on the cylinder 7. One end of the feed pipe 13 away from the cyclone is connected to the connecting pipe.

[0031] Specifically, since the internal air pressure of the kettle body 1 is relatively high and there is a large pressure difference with the outside, once the exhaust valve 6 is opened, the high pressure inside the kettle body 1 is quickly released through the exhaust port 2, and the mixture at the exhaust port 2 is ejected out of the feed pipe 13 under the action of the pressure difference, and enters the cyclone at a relatively fast speed along the tangential direction, generating a three-dimensional elliptical strong rotating shear turbulence in the cyclone, so that the mixed gas, liquid, and solid are quickly separated. The dense block corn cobs and liquid are subjected to centrifugal sedimentation and settle to the bottom of the cyclone, and converge to the solid-liquid recovery port 12 at the bottom of the cross-cone tube 8 for discharge, collection, and recycling. The non-condensable gas that needs to be discharged is guided by the overflow pipe 4 to be discharged from the gas overflow port 5.

[0032] Specifically, the corn cob particles and acidic liquid sprayed from the kettle body 1 will not stay for too long when passing through the connecting pipe, but will quickly enter the cyclone under the influence of the high-pressure gas, and then quickly separate from the gas under the action of centrifugal force, and be discharged from the solid-liquid recovery port 12 at the bottom of the cyclone, effectively avoiding the exhaust device from being blocked by the lumps of corn cobs, and reducing the subsequent maintenance cost of the device.

[0033] One end of the transition cone tube 8 of the utility model is connected to the cylinder 7, and the other end of the transition cone tube 8 is equipped with a discharge pipe 10. The end of the discharge pipe 10 connected to the transition cone tube 8 is provided with a transparent window 9 for observing the discharge of liquid and solid. A quick-opening valve 11 is installed at the lower end of the discharge pipe 10, so that blocky corn cob residues and liquid can be discharged in time.

[0034] The kettle body 1, connecting pipe, cyclone, exhaust valve 6 and quick-opening valve 11 of the utility model are all made of corrosion-resistant stainless steel materials, which can adapt to the high temperature, high pressure and acidic working environment during the hydrolysis and exhaust process, and extend the service life of the device.

[0035] It should be understood that the purpose of these embodiments is only to illustrate the utility model and is not intended to limit the protection scope of the utility model. In addition, it should also be understood that after reading the technical content of the utility model, those skilled in the art can make various changes, modifications and / or variations to the utility model, and all of these equivalent forms also fall within the protection scope defined by the claims attached to this application.

Claims

1. A blocking-proof reactor for corncob hydrolysis reaction, characterized in that: The kettle body (1) comprises an exhaust port (2) at the upper end of the kettle body (1), a connecting pipe is installed on the exhaust port (2), an exhaust valve (6) is installed on the connecting pipe, one end of the connecting pipe is connected to the exhaust port (2), and the other end of the connecting pipe is installed with a cyclone for quickly separating the gas, liquid and corn cob ejected from the exhaust port (2); The cyclone is provided with a feed pipe (13) for guiding the gas, liquid and corn cob leaving the kettle (1); the feed pipe (13) is connected to the cyclone in a tangential feeding manner, an involute feeding manner or a spiral feeding manner; one end of the feed pipe (13) away from the cyclone is connected to the connecting pipe; a gas overflow port (5) is provided at the upper end of the cyclone, and a solid-liquid recovery port (12) is provided at the lower end of the cyclone.

2. The anti-blocking reactor for corncob hydrolysis reaction according to claim 1, characterized in that: The cyclone comprises a cylinder (7) and a transition cone (8), wherein the transition cone (8) is installed at the lower end of the cylinder (7), the gas overflow port (5) is located at the upper end of the cylinder (7), the solid-liquid recovery port (12) is located at the lower end of the transition cone (8), and the feed pipe (13) is installed on the cylinder (7).

3. The anti-blocking reactor for corncob hydrolysis reaction according to claim 2, characterized in that: An overflow pipe (4) is installed on the gas overflow port (5), one end of the overflow pipe (4) is inserted into the cylinder (7), and the other end of the overflow pipe (4) extends out from the upper end of the gas overflow port (5).

4. The anti-blocking reactor for corncob hydrolysis reaction according to claim 3, characterized in that: The overflow pipe (4) and the gas overflow port (5) are connected together by welding.

5. The anti-blocking reactor for corncob hydrolysis reaction according to claim 2, characterized in that: One end of the transition cone tube (8) is connected to the cylinder (7), and the other end of the transition cone tube (8) is provided with a discharge pipe (10).

6. The anti-blocking reactor for corncob hydrolysis reaction according to claim 5, characterized in that: One end of the discharge pipe (10) connected to the transition cone pipe (8) is provided with a transparent window (9).

7. The anti-blocking reactor for corncob hydrolysis reaction according to claim 5, characterized in that: A quick-opening valve (11) is installed at the lower end of the discharge pipe (10).

8. The anti-blocking reactor for corncob hydrolysis reaction according to claim 1, characterized in that: The connecting pipe is formed by splicing two short pipes (3), the exhaust valve (6) is installed between the two short pipes (3), and the ends of the two short pipes (3) away from the exhaust valve (6) are detachably connected to the feed pipe (13) and the exhaust port (2) respectively.

9. The anti-blocking reactor for corncob hydrolysis reaction according to claim 8, characterized in that: The exhaust valve (6) is a flange valve, and the exhaust valve (6) and the short pipe (3) are detachably connected together by bolts.

10. The anti-blocking reactor for corncob hydrolysis reaction according to claim 7, characterized in that: The kettle body (1), the connecting pipe, the cyclone, the exhaust valve (6) and the quick-opening valve (11) are all made of corrosion-resistant stainless steel material.

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