Vertical hydrothermal reaction still kettle

Abstract

The utility model relates to the technical field of reaction containers, and provides a vertical hydrothermal reaction still kettle which comprises a kettle body, an inner cooling pipeline and an outer cooling pipeline. A reaction cavity is formed in the kettle body. And at least one part of the inner cooling pipeline extends into the reaction cavity. The outer cooling pipeline is attached to the outer wall of the kettle body. And both the inner cooling pipeline and the outer cooling pipeline are used for introducing cooling liquid. According to the vertical hydrothermal reaction still kettle disclosed by the utility model, the kettle body with the reaction cavity is arranged to accommodate reactants and reaction media so as to facilitate reaction; meanwhile, an inner cooling pipeline and an outer cooling pipeline are arranged in the reaction cavity and on the outer wall of the kettle body respectively, cooling liquid can be introduced into the inner cooling pipeline and the outer cooling pipeline so that the outer wall of the kettle body and the interior of the reaction cavity can be cooled at the same time, and the inner cooling pipeline and the outer cooling pipeline can be matched with each other so that the cooling rate of the reaction cavity can be increased; the defects of low cooling efficiency and low cooling rate of the still kettle in the prior art are effectively overcome.

Description

TECHNICAL FIELD

[0001] The utility model relates to reaction container technical field especially relates to a vertical hydrothermal reaction autoclave. BACKGROUND

[0002] The autoclave is also called steam curing autoclave and pressure steam autoclave, which is a kind of pressure vessel and is widely used in the production process of pressure steam in the fields of building, chemical industry, medicine, aerospace industry, thermal insulation material, spinning, military industry, etc. Taking building materials as an example, aerated concrete block, concrete pipe pile, sand-lime brick, fly ash brick, microporous calcium silicate board, new type of light wall material, thermal insulation asbestos board, high-strength gypsum, etc. are all completed by hydrothermal reaction of CaO-SiO2-H2O in the autoclave. Generally, the industrial autoclave is of horizontal structure and uses steam as heat transfer medium, which cannot be used in the production with water as reaction medium. The vertical reaction autoclave is of vertical structure and can be used in the reaction with water as medium and raw materials as powder, which puts each raw material and water into the reaction autoclave, seals the cover, stirs, heats, insulates and pressurizes, and the raw materials complete the hydrothermal reaction under certain temperature and pressure, which has the characteristics of sufficient reaction and good insulation effect.

[0003] However, the existing vertical hydrothermal reaction autoclave usually cools by pipeline in the autoclave or natural cooling, which has low cooling efficiency, slow cooling rate, long production cycle and seriously restricts the improvement of production efficiency. UTILITY MODEL CONTENTS

[0004] The utility model provides a vertical hydrothermal reaction autoclave to solve the defects of low cooling efficiency and slow cooling rate of the autoclave in the prior art.

[0005] The utility model provides a vertical hydrothermal reaction autoclave, which comprises:

[0006] The autoclave body is internally provided with a reaction cavity;

[0007] The inner cooling pipeline is at least partially extended into the reaction cavity;

[0008] The outer cooling pipeline is attached to the outer wall of the autoclave body;

[0009] The inner cooling pipeline and the outer cooling pipeline are both used for passing cooling liquid.

[0010] According to the vertical hydrothermal reaction autoclave, the heating device is attached to the outer wall of the autoclave body.

[0011] According to the vertical hydrothermal reaction autoclave, the autoclave body comprises a first autoclave body and a second autoclave body arranged from top to bottom and interconnected, and the first autoclave body and the second autoclave body are butted to form the reaction cavity;

[0012] The outer cooling pipeline is attached to the outer wall of the first kettle body, and the heating device is attached to the outer wall of the second kettle body.

[0013] According to the vertical hydrothermal reaction autoclave, the outer cooling pipeline comprises a first cooling coil pipe;

[0014] The first cooling coil pipe is arranged around the outer wall of the first kettle body.

[0015] According to the vertical hydrothermal reaction autoclave, the inner cooling pipeline comprises an inlet pipe, a second cooling coil pipe and an outlet pipe; the kettle body is respectively provided with a first through hole and a second through hole at positions corresponding to the inlet pipe and the outlet pipe;

[0016] The second cooling coil pipe is arranged in the second kettle body; the inlet pipe is in communication with an inlet end of the second cooling coil pipe and extends to the outside of the kettle body through the first through hole; and the outlet pipe is in communication with an outlet end of the second cooling coil pipe and extends to the outside of the kettle body through the second through hole.

[0017] According to the vertical hydrothermal reaction autoclave, the stirring mechanism is rotatably arranged in the reaction cavity around the central axis of the reaction cavity.

[0018] The second cooling coil pipe is arranged around the stirring mechanism.

[0019] According to the vertical hydrothermal reaction autoclave, the heat preservation shell is formed with a heat preservation cavity, and the kettle body, the outer cooling pipeline and the heating device are all located in the heat preservation cavity.

[0020] According to the vertical hydrothermal reaction autoclave, the cavity wall of the heat preservation cavity comprises a first cavity wall, a transition cavity wall and a second cavity wall which are sequentially connected from top to bottom, and the first cavity wall is protruded inward relative to the second cavity wall.

[0021] The first cavity wall is arranged around the outside of the first kettle body, the transition cavity wall abuts against the top of the heating device, and the second cavity wall is arranged around the outside of the second kettle body.

[0022] According to the vertical hydrothermal reaction autoclave, the kettle body is provided with a protruding portion, the heat preservation cavity is provided with a groove at a position corresponding to the protruding portion, and the protruding portion is inserted into the groove.

[0023] According to the vertical hydrothermal reaction autoclave, the pressure relief valve and the pressure detector are further included.

[0024] A third through hole and a fourth through hole are respectively provided on the kettle body corresponding to the pressure relief valve and the pressure detector, and the pressure relief valve is arranged in the third through hole; the pressure detector is inserted into the fourth through hole, so that the detection end of the pressure detector is located in the reaction chamber and the display end is located outside the kettle body.

[0025] The utility model discloses a vertical hydrothermal reaction autoclave, which is provided with a reactor body having a reaction chamber to accommodate reactants and reaction medium for reaction. At the same time, an inner cooling pipeline and an outer cooling pipeline are respectively provided in the reaction chamber and on the outer wall of the reactor body. Cooling liquid can be introduced into both the inner cooling pipeline and the outer cooling pipeline to cool the outer wall of the reactor body and the reaction chamber at the same time. The inner cooling pipeline and the outer cooling pipeline can cooperate with each other to improve the cooling rate of the reaction chamber, thereby effectively solving the defects of low cooling efficiency and slow cooling rate of the autoclave in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 This is one of the schematic diagrams of a vertical hydrothermal reaction autoclave provided in an embodiment of the present utility model.

[0028] Figure 2 This is the second schematic diagram of a vertical hydrothermal reaction autoclave provided by an embodiment of the present utility model.

[0029] Reference numerals:

[0030] 1. Vertical hydrothermal reaction autoclave;

[0031] 11. kettle body; 111. reaction chamber; 112. first kettle body; 113. second kettle body; 114. raised portion

[0032] 12. Internal cooling pipeline; 121. Inlet pipe; 122. Second cooling coil; 123. Outlet pipe;

[0033] 13. External cooling pipeline; 131. First cooling coil;

[0034] 14. Heating device; 15. Stirring mechanism;

[0035] 16. Insulation shell; 161. Insulation cavity; 162. First cavity wall; 163. Transition cavity wall; 164. Second cavity wall; 165. Groove;

[0036] 17. Pressure relief valve; 18. Pressure detector. DETAILED DESCRIPTION

[0037] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will be combined with the accompanying drawings to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] The following combination Figures 1-2 The utility model describes a vertical hydrothermal reaction autoclave.

[0039] like Figure 1 and Figure 2 As shown, the present invention provides a vertical hydrothermal reaction autoclave 1, comprising a reactor body 11, an internal cooling pipe 12, and an external cooling pipe 13. A reaction chamber 111 is defined within the reactor body 11. At least a portion of the internal cooling pipe 12 extends into the reaction chamber 111. The external cooling pipe 13 is attached to the outer wall of the reactor body 11. Both the internal cooling pipe 12 and the external cooling pipe 13 are used to carry a coolant.

[0040] In this embodiment, a reaction chamber 111 is provided within the kettle body 11 to accommodate reactants, which react. It is understood that the kettle body 11 is provided with a feed port and a discharge port communicating with the reaction chamber 111. The feed port is used to introduce reactants and a reaction medium into the reaction chamber 111, and the discharge port is used to discharge the generated substances and residual substances after the reaction. Furthermore, by providing an internal cooling line 12 extending into the reaction chamber 111, a coolant (typically cooling water) can pass through the internal cooling line 12 through the reaction chamber 111, exchanging heat with the substances within the reaction chamber 111 and thereby reducing the temperature within the reaction chamber 111. Furthermore, by providing an external cooling line 13 attached to the outer wall of the kettle body 11, the coolant can exchange heat with the outer wall of the kettle body 11 as it passes through the external cooling line 13, thereby reducing the temperature of the outer wall of the kettle body 11. This, in conjunction with the internal cooling line 12, reduces the temperature of the kettle body 11 and the reaction chamber 111, thereby achieving higher cooling efficiency and a lowering rate.

[0041] The vertical hydrothermal reaction autoclave 1 of the utility model is provided with a kettle body 11 having a reaction chamber 111 to accommodate reactants and reaction medium for reaction. At the same time, an inner cooling pipe 12 and an outer cooling pipe 13 are respectively provided in the reaction chamber 111 and on the outer wall of the kettle body 11. Cooling liquid can be passed through both the inner cooling pipe 12 and the outer cooling pipe 13 to cool the outer wall of the kettle body 11 and the reaction chamber 111 at the same time. The inner cooling pipe 12 and the outer cooling pipe 13 can cooperate with each other to improve the cooling rate of the reaction chamber 111, effectively solving the defects of low cooling efficiency and slow cooling rate of the autoclave in the prior art.

[0042] Optionally, in some embodiments, Figure 1 and Figure 2 As shown, the feed port of the kettle body 11 is set at the top of the kettle body 11 and is set in an oblique upward direction to facilitate the input of materials; the discharge port of the kettle body 11 is set at the bottom of the kettle body 11 and is set in an oblique downward direction to facilitate the discharge and recovery of materials.

[0043] It is understandable that the feed port and the discharge port of the kettle body 11 are both provided with switch structures such as cocks and valves to control opening and closing.

[0044] Specifically, in some embodiments, Figure 1 and Figure 2 As shown, the vertical hydrothermal reaction autoclave 1 further includes a heating device 14 attached to the outer wall of the autoclave body 11. In this embodiment, by attaching the heating device 14 to the outer wall of the autoclave body 11, the heating device 14 can heat the outer wall of the autoclave body 11, thereby heating the interior of the reaction chamber 111, so that the reaction chamber 111 reaches a sufficient reaction temperature, so that the reactants in the reaction chamber 111 can react.

[0045] Furthermore, in some embodiments, Figure 1 and Figure 2 As shown, the kettle body 11 includes a first kettle body 112 and a second kettle body 113 arranged from top to bottom and connected to each other. The first kettle body 112 and the second kettle body 113 are aligned and surround each other to form a reaction chamber 111. The external cooling pipe 13 is attached to the outer wall of the first kettle body 112, and the heating device 14 is attached to the outer wall of the second kettle body 113.

[0046] In this embodiment, the kettle body 11 is divided into a first kettle body 112 and a second kettle body 113 arranged from top to bottom, and the heating device 14 is arranged on the outer wall of the second kettle body 113 located below, so that the second kettle body 113 can be directly heated by the heating device 14. After evaporation, the liquid in the second kettle body 113 can also flow upward and exchange heat with the material above to heat the entire reaction chamber 111; at the same time, by arranging the external cooling pipe 13 and the heating device 14 in the first kettle body 112 and the second kettle body 113 respectively, it can be avoided that the external cooling pipe 13 and the heating device 14 contact with each other and affect each other.

[0047] In some embodiments, as Figure 1 and Figure 2 As shown, the external cooling pipeline 13 includes a first cooling coil 131. The first cooling coil 131 is disposed around the outer wall of the first kettle body 112.

[0048] In this embodiment, a first cooling coil 131 is provided through the outer wall of the first kettle body 112 to exchange heat with the first kettle body 112. The first cooling coil 131 has a larger heat exchange area and the pipeline is more compact and occupies less space, thereby ensuring the cooling effect while making the entire structure more compact and smaller in size.

[0049] It is understood that the first cooling coil 131 has an inlet and an outlet so as to be connected to an external coolant circulation pipeline to form a coolant circulation loop.

[0050] In some embodiments, as Figure 1 and Figure 2 As shown, the internal cooling circuit 12 includes an inlet pipe 121, a second cooling coil 122, and an outlet pipe 123. The kettle body 11 is provided with a first through-hole and a second through-hole corresponding to the inlet pipe 121 and the outlet pipe 123, respectively. The second cooling coil 122 is disposed within the second kettle body 113; the inlet pipe 121 communicates with the inlet end of the second cooling coil 122 and extends to the outside of the kettle body 11 through the first through-hole. The outlet pipe 123 communicates with the outlet end of the second cooling coil 122 and extends to the outside of the kettle body 11 through the second through-hole.

[0051] In this embodiment, the second cooling coil 122 is disposed within the second kettle 113 to cool the contents within the second kettle 113. The second cooling coil 122 has a large heat exchange area and is more compact, taking up less space and being convenient to use. Furthermore, by disposing the first cooling coil 131 and the second cooling coil 122 within the first kettle 112 and the second kettle 113, respectively, cooling the first and second kettles 112 and 113, heat dissipation is more evenly distributed across the entire kettle 11, improving heat dissipation efficiency.

[0052] In some embodiments, as Figure 1 andFigure 2 As shown, the vertical hydrothermal reaction autoclave 1 further includes a stirring mechanism 15 , which is rotatably disposed in the reaction chamber 111 around the central axis of the reaction chamber 111 . The second cooling coil 122 is disposed around the stirring mechanism 15 .

[0053] In this embodiment, a rotatable stirring mechanism 15 is provided in the reaction chamber 111 to stir the substances in the reaction chamber 111 so that the reactants can be fully mixed and reacted, thereby increasing the reaction rate. The stirring mechanism 15 rotates around the central axis of the reaction chamber 111 so that the stirring force applied to each position in the reaction chamber 111 is more uniform. It is understandable that the second cooling coil 122 is a spirally extending pipeline with a space formed in the middle of the pipeline to accommodate the stirring mechanism 15 so that the stirring mechanism 15 and the second cooling coil 122 do not interfere with each other, and can make the stirring mechanism 15 and the second cooling coil 122 more compact and take up less space.

[0054] It is understood that the stirring mechanism 15 includes a motor, a rotating shaft, and an impeller. The output end of the motor is in transmission connection with the rotating shaft to drive the rotating shaft to rotate. The impeller is disposed on the rotating shaft so that the rotating shaft drives the substances in the reaction chamber 111 to rotate and stir them. Specifically, the motor is typically disposed outside the kettle body 11, and the rotating shaft extends from the outside of the kettle body 11 through a corresponding hole into the reaction chamber 111 to protect the motor from being affected by the high temperature and high pressure environment within the kettle body 11.

[0055] It can be understood that there can be multiple impellers, and the multiple impellers are arranged at intervals along the axial direction of the rotating shaft.

[0056] In some embodiments, the vertical hydrothermal reaction autoclave 1 further includes a heat-insulating shell 16 , which forms a heat-insulating cavity 161 , and the autoclave body 11 , the external cooling pipe 13 , and the heating device 14 are all located in the heat-insulating cavity 161 .

[0057] In this embodiment, an insulating shell 16 having an insulating cavity 161 inside is provided, and the insulating shell 16 is covered on the outside of the kettle body 11, the external cooling pipe 13 and the heating device 14 to reduce the heat exchange between the kettle body 11, the external cooling pipe 13 and the heating device 14 and the external environment, thereby reducing the loss of heat or cold and reducing energy waste.

[0058] It can be understood that the heat-insulating shell 16 includes a metal shell and a heat-insulating layer arranged inside the metal shell.

[0059] Specifically, in some embodiments, Figure 1 and Figure 2As shown, the walls of the heat preservation chamber 161 include a first chamber wall 162, a transition chamber wall 163, and a second chamber wall 164, which are connected in sequence from top to bottom. The first chamber wall 162 protrudes inward relative to the second chamber wall 164. The first chamber wall 162 surrounds the outside of the first kettle body 112, the transition chamber wall 163 abuts the top of the heating device 14, and the second chamber wall 164 surrounds the outside of the second kettle body 113.

[0060] In this embodiment, the cavity wall of the insulation cavity 161 is divided into a first cavity wall 162, a transition cavity wall 163 and a second cavity wall 164 which are connected in sequence from top to bottom. The first cavity wall 162 is arranged corresponding to the first kettle body 112, and the second cavity wall 164 is arranged corresponding to the second kettle body 113. At the same time, the first cavity wall 162, the transition cavity wall 163 and the second cavity wall 164 form a stepped cavity wall, so that the transition cavity wall 163 can abut against the top of the heating device 14, which is convenient for positioning the insulation shell 16 when installing the insulation shell 16.

[0061] In some embodiments, as Figure 1 and Figure 2 As shown, a protrusion 114 is provided on the outside of the kettle body 11 , and a groove 165 is provided in the heat preservation chamber 161 at a position corresponding to the protrusion 114 , and the protrusion 114 is inserted into the groove 165 .

[0062] In this embodiment, corresponding protrusions 114 and grooves 165 are respectively provided on the kettle body 11 and the heat preservation chamber 161 , so that when the heat preservation shell 16 is installed, the protrusions 114 and the grooves 165 cooperate with each other to position the heat preservation shell 16 .

[0063] In some embodiments, as Figure 1 and Figure 2 As shown, the vertical hydrothermal reaction autoclave 1 also includes a pressure relief valve 17 and a pressure detector 18. A third through hole and a fourth through hole are provided on the autoclave body 11, corresponding to the pressure relief valve 17 and the pressure detector 18, respectively. The pressure relief valve 17 is provided in the third through hole, and the pressure detector 18 is inserted into the fourth through hole, so that the detection end of the pressure detector 18 is located within the reaction chamber 111 and the display end is located outside the autoclave body 11.

[0064] In this embodiment, a pressure detector 18 is provided. The detection end of the pressure detector 18 extends into the reaction chamber 111 through the fourth through hole to detect the pressure within the reaction chamber 111. The display end of the pressure detector 18 is located outside the kettle body 11, making it convenient for users to view and monitor the pressure within the reaction chamber 111 at any time. At the same time, by providing a third through hole in the kettle body 11 and installing a pressure relief valve 17 in the third through hole, users can easily relieve the pressure of the reaction chamber 111 according to the pressure within the reaction chamber 111.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A vertical hydrothermal reaction autoclave, characterized in that: include: A kettle body, which has a reaction chamber inside; an inner cooling pipeline, at least a portion of which extends into the reaction chamber; An external cooling pipeline is attached to the outer wall of the kettle body; The inner cooling pipeline and the outer cooling pipeline are both used for passing coolant.

2. A vertical hydrothermal reaction autoclave according to claim 1, characterized in that: It also includes a heating device, which is attached to the outer wall of the kettle body.

3. A vertical hydrothermal reaction autoclave according to claim 2, characterized in that: The kettle body includes a first kettle body and a second kettle body arranged from top to bottom and connected to each other, and the first kettle body and the second kettle body are joined together to form the reaction chamber; The external cooling pipeline is attached to the outer wall of the first kettle body, and the heating device is attached to the outer wall of the second kettle body.

4. A vertical hydrothermal reaction autoclave according to claim 3, characterized in that: The external cooling circuit includes a first cooling coil; The first cooling coil is disposed around the outer wall of the first kettle.

5. A vertical hydrothermal reaction autoclave according to claim 3, characterized in that: The inner cooling pipeline includes an inlet pipe, a second cooling coil and an outlet pipe; the kettle body is provided with a first through hole and a second through hole at positions corresponding to the inlet pipe and the outlet pipe respectively; The second cooling coil is arranged outside the second kettle body; the inlet pipe is connected to the inlet end of the second cooling coil and extends to the outside of the kettle body through the first through hole; the outlet pipe is connected to the outlet end of the second cooling coil and extends to the outside of the kettle body through the second through hole.

6. A vertical hydrothermal reaction autoclave according to claim 5, characterized in that: Also included is a stirring mechanism, the stirring mechanism being rotatably disposed in the reaction chamber about the central axis of the reaction chamber; The second cooling coil is arranged around the stirring mechanism.

7. A vertical hydrothermal reaction autoclave according to claim 3, characterized in that: It also includes a heat-insulating shell, which forms a heat-insulating cavity, and the kettle body, the external cooling pipeline and the heating device are all located in the heat-insulating cavity.

8. The vertical hydrothermal reaction autoclave according to claim 7, characterized in that: The cavity wall of the heat preservation cavity includes a first cavity wall, a transition cavity wall and a second cavity wall connected in sequence from top to bottom, and the first cavity wall protrudes inward relative to the second cavity wall; The first cavity wall is disposed around the outside of the first kettle body, the transition cavity wall abuts against the top of the heating device, and the second cavity wall is disposed around the outside of the second kettle body.

9. The vertical hydrothermal reaction autoclave according to claim 7, characterized in that: A convex portion is provided on the outside of the kettle body, and a groove is provided in the heat-insulating cavity at a position corresponding to the convex portion, and the convex portion is inserted into the groove.

10. The vertical hydrothermal reaction autoclave according to claim 1, characterized in that: Also includes a pressure relief valve and pressure detector; A third through hole and a fourth through hole are respectively provided on the kettle body corresponding to the pressure relief valve and the pressure detector, and the pressure relief valve is arranged in the third through hole; the pressure detector is inserted into the fourth through hole, so that the detection end of the pressure detector is located in the reaction chamber and the display end is located outside the kettle body.

Images