Agricultural efficient liquefaction reaction kettle

Abstract

The utility model provides an agricultural efficient liquefaction reaction kettle, which belongs to the technical field of biomass and comprises a reaction kettle body, and a support platform fixedly mounted on the outer side of the reaction kettle body is communicated with a feed inlet above the reaction kettle body. According to the stirring and cleaning device disclosed by the utility model, through the cooperation of all parts in the stirring assembly and the cleaning assembly, lignin and a solvent in the reaction kettle can be fully stirred through reciprocating rotation of stirring blades, and residues on the inner wall of the reaction kettle body can be intermittently scraped by a scraping disc in the stirring process; after scraping each time, sufficient time is provided for reactants to redistribute and mix, so that mass transfer and heat transfer are promoted, the stability and high efficiency of the reaction are maintained, and the effect of reaction interruption or non-uniformity caused by frequent scraping is avoided; lignin is converted into a material which is low in cost, easy to degrade and not easy to cause environmental pollution by utilizing diethylene glycol, 1, 2-propylene glycol and phosphoric acid to replace dangerous and easy-to-explode sulfuric acid.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of biomass technology, specifically relates to an efficient liquefaction reaction kettle for agriculture. BACKGROUND

[0002] Lignin is an important component in plant structure, and is the second largest renewable biomass resource after cellulose. A large number of active groups such as aromatic group, phenolic hydroxyl group, alcoholic hydroxyl group, carbonyl group, methoxyl group, carboxyl group and conjugated double bond are contained in the molecular structure of lignin, which can react with other substances in various chemical reactions. Lignin can be biodegraded, is environment-friendly and non-toxic, does not pollute the environment, and has large available space. However, a large amount of lignin is incinerated, which not only causes resource waste, but also brings new burden to the environment. Therefore, it has become an important direction to select a suitable method to convert lignin into different substitutes for petroleum energy.

[0003] Although the prior art has a method for converting lignin using slow-release fertilizer, the market price of the slow-release fertilizer is usually high, the imported product is about 8000 yuan / ton, and the domestic product is about 2400 yuan / ton. In addition, the existing film material is mainly petrochemical film material, which has the problems of high cost and difficult degradation. The petrochemical polyurethane film material has a long degradation period and high cost, and the production and application can easily cause secondary environmental pollution. Lignin liquefaction usually requires high temperature and pressure. The reaction kettle can provide uniform heat distribution through jacket heating, inner coil heating and other ways to ensure that the reactants are fully contacted and reacted. At the same time, the stirring system can accelerate the mass transfer process and improve the reaction rate and conversion rate. However, the traditional reaction kettle usually has the defects of poor stirring uniformity and lignin liquefaction process. The reactants may adhere to the inner wall of the reaction kettle under high temperature and pressure conditions, forming difficult-to-remove residues or scaling layers. Uneven stirring can cause uneven distribution of solvent and lignin concentration in different areas of the reaction kettle, which can cause local concentration to be too high or too low in some areas, thereby affecting the uniformity and consistency of the reaction. The residues attached to the inner wall after use are difficult to remove in time, which will gradually accumulate, not only affecting the effect of the next reaction, but also increasing the cleaning difficulty of the equipment, thereby increasing the production cost. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing an efficient liquefaction reaction kettle for agriculture, which aims to solve the problems in the above background technology.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] The utility model provides an agricultural high -efficient liquefaction reaction kettle, including liquefaction mechanism, including the reaction kettle body, the support platform of fixed installation in the outside of reaction kettle body, the feed inlet of intercommunication in the top of reaction kettle body and cooperation feed port uses the feeding part of adaptive installation, and the discharge valve of fixed installation in the bottom of reaction kettle body,

[0007] Processing mechanism, including the servo motor of adaptive installation in the outer surface of reaction kettle body, the connecting column of fixed installation through the shaft coupling in the output of servo motor, the notch bevel gear of fixed cover in the outer surface of connecting column, the stirring assembly of cooperation is used to reciprocatingly stir reaction solvent, and the cleaning assembly of cooperation is used for cleaning the inner wall of reaction kettle body.

[0008] As a preferred scheme of the utility model, the stirring assembly includes a rotating shaft fixedly installed on the inner surface of the reaction kettle body through a bearing sleeve, a first bevel gear and a second bevel gear fixedly sleeved on the two side surfaces of the rotating shaft and used in cooperation with the notch bevel gear, and a plurality of stirring blades welded on the outer end surface of the rotating shaft.

[0009] As a preferred scheme of the utility model, the first bevel gear and the second bevel gear are opposite in direction, and the stirring blades are located in the inner cavity of the reaction kettle body.

[0010] As a preferred scheme of the utility model, the cleaning assembly includes a first belt disc fixedly sleeved on the outer surface of the rotating shaft, a belt sleeved on the outer surface of the first belt disc, a second belt disc sleeved on the inner surface of the other end of the belt, and a first ratchet wheel fixedly installed on the outer end surface of the second belt disc.

[0011] As a preferred scheme of the utility model, the cleaning assembly further includes a second ratchet wheel engaged with the outer surface of the first ratchet wheel, a spline shaft fixedly connected to the other side of the second ratchet wheel, a spline shaft sleeve slidingly sleeved on the outer surface of the spline shaft, a spring fixedly installed on the inner wall of the spline shaft sleeve and used in cooperation with the spline shaft, and a reciprocating roller fixedly connected to the through end of the spline shaft sleeve.

[0012] As a preferred scheme of the utility model, the cleaning assembly further includes a sleeve slidingly sleeved on the outer surface of the reciprocating roller, a scraper disc fixedly connected to the outer surface of the sleeve, and a limiting rod fixedly connected to the inner wall of the reaction kettle body and used in cooperation with the cleaning assembly.

[0013] As a preferred scheme of the utility model, a bearing sleeve that rotates in cooperation is installed at the connection between the spline shaft sleeve and the reaction kettle body, and the inner surface of the scraper disc is in sliding contact with the outer surface of the limiting rod.

[0014] Compared with the prior art, the wood lignin and the solvent in the reaction kettle can be fully stirred through the reciprocating rotation of the stirring blade, and the reaction substances can be uniformly mixed, the residual substances in the inner wall of the reaction kettle body can be scraped off intermittently by the scraper during the stirring process, and the reaction stability and efficiency can be maintained while promoting mass transfer and heat transfer, and the effect of reaction interruption or unevenness caused by frequent scraping can be avoided; the lignin is converted into a material with low cost, easy degradation and no environmental pollution by using diethylene glycol, 1,2-propylene glycol and phosphoric acid instead of dangerous and easily explosive sulfuric acid, so that the effect of waste recycling and cost reduction is realized. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor. Among them:

[0016] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0017] Figure 2 It is a schematic diagram of the overall structure of the present application;

[0018] Figure 3 It is a schematic diagram of the overall structure of the present application;

[0019] Figure 4 It is a schematic diagram of the overall structure of the present application; Figure 3 It is a schematic diagram of the overall structure of the present application;

[0020] Figure 5 It is a schematic diagram of the overall structure of the present application;

[0021] Figure 6 It is a schematic diagram of the overall structure of the present application; Figure 4 It is a schematic diagram of the overall structure of the present application;

[0022] In the figure: 100, liquefaction mechanism; 101, reaction kettle body; 102, support platform; 103, feed inlet; 104, feeding part; 105, discharge valve; 200, processing mechanism; 201, servo motor; 202, connecting column; 203, notch bevel gear; 204, stirring assembly; 204a, rotating shaft; 204b, first bevel gear; 204c, second bevel gear; 204d, stirring blade; 205, cleaning assembly; 205a, first belt disc; 205b, belt; 205c, second belt disc; 205d, first ratchet wheel; 205e, second ratchet wheel; 205f, spline shaft; 205g, spline shaft sleeve; 205h, spring; 205i, reciprocating roller; 205j, sleeve; 205k, scraper disc; 205l, limiting rod. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purposes, features and advantages of the present application more apparent and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0024] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a variety of ways beyond the specific details set forth herein without departing from the scope of the present application, and it is understood that the present application is not limited to the particular details described herein.

[0025] Secondly, the "one embodiment" or "embodiment" referred to herein means that the specific features, structures or characteristics can be included in at least one implementation of the present application. In this specification, "in one embodiment" does not mean the same embodiment, nor is it an independent or alternative embodiment that excludes other embodiments.

[0026] Embodiment 1

[0027] Reference Figures 1-6 For the first embodiment of the present application, the embodiment provides an efficient liquefaction reaction kettle for agriculture, comprising,

[0028] The liquefaction mechanism 100 comprises a reaction kettle body 101, a support platform 102 fixedly installed on the outer side of the reaction kettle body 101, a feed inlet 103 communicated above the reaction kettle body 101, a feeding part 104 adaptively installed on the top of the support platform 102 and matched with the feed inlet 103, and a discharge valve 105 fixedly installed on the bottom of the reaction kettle body 101;

[0029] It should be noted that the reaction kettle body 101 is the main container for the entire liquefaction process, used to contain lignin and solvent, and to provide a closed reaction environment, the support platform 102 is used to provide a stable support and installation base for the reaction kettle body 101 and the feeding member 104, the feeding port 103 is used to add pretreated lignin and solvent into the reaction kettle, the feeding member 104 is aligned with the feeding port 103, which is responsible for accurately feeding lignin and solvent into the reaction kettle, the feeding member uses but is not limited to a screw conveyor, a pneumatic conveying device, etc., the specific design depends on the process requirements, and the discharge valve 105 is used to discharge the liquefaction product after the reaction is completed.

[0030] The processing mechanism 200 includes a servo motor 201 adapted to be mounted on the outer surface of the reaction kettle body 101, a connecting column 202 fixedly mounted on the output end of the servo motor 201 through a shaft coupling, a notch bevel gear 203 fixedly sleeved on the outer surface of the connecting column 202, a stirring assembly 204 used for reciprocating stirring of the reaction solvent, and a cleaning assembly 205 used for cleaning the inner wall of the reaction kettle body 101.

[0031] It should be noted that the servo motor 201 can accurately control the speed and direction according to the actual use needs, the servo motor 201 is a prior art, and the working principle thereof is clear to those skilled in the art.

[0032] Specifically, the stirring assembly 204 includes a rotating shaft 204a fixedly mounted on the inner surface of the reaction kettle body 101 through a bearing sleeve, a first bevel gear 204b and a second bevel gear 204c fixedly sleeved on the two side surfaces of the rotating shaft 204a and used in cooperation with the notch bevel gear 203, and a plurality of stirring blades 204d welded on the outer end surface of the rotating shaft 204a.

[0033] It should be further noted that when the servo motor 201 drives the connecting column 202 and the notch bevel gear 203 to rotate, the notch bevel gear 203 meshes with the first bevel gear 204b, assuming clockwise rotation, which can drive the first bevel gear 204b, the rotating shaft 204a, the second bevel gear 204c and the stirring blades 204d to rotate clockwise, when the notch bevel gear 203 rotates to the position meshing with the second bevel gear 204c, it can drive the second bevel gear 204c, the rotating shaft 204a, the first bevel gear 204b and the stirring blades 204d to change the rotation direction, so as to realize the reciprocating rotation of the stirring blades 204d and fully stir the lignin and solvent in the reaction kettle, ensure uniform mixing of the reactants, and promote the effect of mass transfer and heat transfer.

[0034] Further, the first bevel gear 204b and the second bevel gear 204c are opposite in direction, and the stirring blades 204d are located in the inner cavity of the reaction kettle body 101.

[0035] Preferably, the cleaning assembly 205 comprises a first belt disc 205a fixedly sleeved on the outer surface of the rotating shaft 204a, a belt 205b sleeved on the outer surface of the first belt disc 205a, a second belt disc 205c sleeved on the inner surface of the other end of the belt 205b, and a first ratchet wheel 205d fixedly installed on the outer end surface of the second belt disc 205c.

[0036] When the rotating shaft 204a rotates clockwise, the first belt disc 205a, the belt 205b, the second belt disc 205c and the first ratchet wheel 205d can be driven to rotate synchronously.

[0037] It should be noted that the cleaning assembly 205 further comprises a second ratchet wheel 205e engaged with the outer surface of the first ratchet wheel 205d, a spline shaft 205f fixedly connected to the other side of the second ratchet wheel 205e, a spline shaft sleeve 205g slidably sleeved on the outer surface of the spline shaft 205f, a spring 205h fixedly installed on the inner wall of the spline shaft sleeve 205g and matched with the spline shaft 205f, and a reciprocating roller 205i fixedly connected to the through end of the spline shaft sleeve 205g.

[0038] It should be noted that the first ratchet wheel 205d rotates clockwise, which can extrude the second ratchet wheel 205e, drive the spline shaft 205f to move vertically downward in the spline shaft sleeve 205g, and give the spring 205h a pressure, and then reset the spring 205h through the spring 205h. When the first ratchet wheel 205d rotates counterclockwise, the second ratchet wheel 205e, the spline shaft 205f and the spline shaft 205f can be driven to rotate synchronously.

[0039] Further, the cleaning assembly 205 further comprises a sleeve 205j slidably sleeved on the outer surface of the reciprocating roller 205i, a scraper disc 205k fixedly connected to the outer surface of the sleeve 205j, and a limiting rod 205l fixedly connected to the inner wall of the reaction kettle body 101 and matched with the cleaning assembly 205.

[0040] Further, when the spline shaft 205f rotates, the reciprocating roller 205i can be driven to rotate synchronously, and the sleeve 205j and the scraper disc 205k can be driven to move vertically and reciprocally along the limiting rod 205l through the reciprocating roller 205i, so as to achieve the effect of intermittently scraping the residues on the inner wall of the reaction kettle body 101 by the scraper disc 205k.

[0041] Specifically, a bearing sleeve matched with rotation is installed at the connection between the spline shaft sleeve 205g and the reaction kettle body 101, and the inner surface of the scraper disc 205k is in sliding contact with the outer surface of the limiting rod 205l.

[0042] In use, the pretreated lignin and solvent are added into the feed inlet 103 through the feeding part 104 and into the reaction kettle body 101, the feed inlet 103 is closed and the servo motor 201 is started to drive the notched gear 203 to rotate, the notched gear 203 drives the first bevel gear 204b, the rotating shaft 204a, the second bevel gear 204c and the stirring blade 204d to rotate clockwise, when the notched gear 203 rotates to the position where the second bevel gear 204c is engaged, the second bevel gear 204c, the rotating shaft 204a, the first bevel gear 204b and the stirring blade 204d are driven to change the rotating direction, so that the lignin and the solvent in the reaction kettle are fully stirred by the reciprocating rotation of the stirring blade 204d, the reactants are uniformly mixed, and the mass transfer and heat transfer effects are promoted;

[0043] When the rotating shaft 204a rotates clockwise, the first belt disc 205a, the belt 205b, the second belt disc 205c and the first ratchet wheel 205d rotate synchronously, when the first ratchet wheel 205d rotates clockwise, the second ratchet wheel 205e is extruded, the second ratchet wheel 205e drives the spline shaft 205f to move vertically downward in the spline shaft sleeve 205g and gives the spring 205h a pressure, then the spring 205h is reset through the spring 205h, when the first ratchet wheel 205d rotates counterclockwise, the second ratchet wheel 205e, the spline shaft 205f, the spline shaft 205f and the reciprocating roller 205g rotate synchronously, the sleeve 205j and the scraper disc 205k are vertically reciprocated along the limiting rod 205l through the reciprocating roller 205i, so that the residual substances in the reaction kettle body 101 are intermittently scraped off by the scraper disc 205k.

[0044] In summary, through the cooperation between the stirring assembly 204 and the cleaning assembly 205, the lignin and the solvent in the reaction kettle are fully stirred by the reciprocating rotation of the stirring blade 204d, the reactants are uniformly mixed, the residual substances in the reaction kettle body 101 are intermittently scraped off by the scraper disc 205k during the stirring process, the reactants are given enough time to redistribute and mix after each scraping, the mass transfer and heat transfer are promoted, the stability and efficiency of the reaction are maintained, and the effect of reaction interruption or unevenness caused by frequent scraping is avoided.

[0045] Example 2

[0046] Reference Figures 1-6 The second embodiment of the utility model is different from the previous embodiment, and a control method process for lignin conversion is provided.

[0047] S1: diethylene glycol, 1,2-propanediol and phosphoric acid are added into the reaction kettle body 101, and the pretreated waste lignin is liquefied at 170 DEG C to obtain a liquefaction product;

[0048] S2: adding catalyst during the reaction to convert the unsaturated carbonyl group into hydroxyl group, thereby obtaining polyol rich in hydroxyl group and of good quality.

[0049] In summary, by converting lignin into low-cost, easily degradable, and environment-friendly material using diethylene glycol, 1,2-propanediol, and phosphoric acid instead of hazardous and explosive sulfuric acid, the effect of waste recycling and cost reduction is achieved.

[0050] Importantly, it should be noted that the construction and arrangement of the application shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters, mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described in the application. For example, elements shown as integrally formed can be constructed of multiple parts or elements, the position of elements can be reversed or otherwise varied, and the nature or number of elements or positions can be altered or varied. Accordingly, all such variations are intended to be included within the scope of the present application. The order or sequence of any process or method steps can be varied or re-sequenced without materially affecting the application. Any "means plus function" clauses are intended to cover the structures described herein as performing the recited functionality and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes, and omissions can be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present application. Accordingly, the present application is not limited to the particular embodiments described in the specification. Instead, the application extends to encompass all such modifications, alterations, and permutations within the scope of the appended claims.

[0051] Furthermore, in the interest of providing a concise description of exemplary embodiments, not all features of an actual implementation can be described (i.e., those unrelated to the best mode of practicing the present application, or those unrelated to enabling the claimed application).

[0052] It should be understood that numerous specific implementations can be made within the scope of the present application, and that the general description of the application described above is not intended to limit the application to a specific embodiment unless specifically recited in a specific claim. For example, although specific configurations of elements of the application have been set forth, in the alternative, components can be combined or separated, elements can be added or deleted, and / or properties of the elements can be altered without departing from the spirit and scope of the present application. Further, it is intended that all matter contained in the above description be interpreted as illustrative and not in a limiting sense.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. An efficient liquefaction reactor for agricultural use, characterized by: Including, The liquefaction mechanism (100) comprises a reaction kettle body (101), a support platform (102) fixedly installed outside the reaction kettle body (101), a feed inlet (103) communicated above the reaction kettle body (101), a feeding member (104) adaptively installed on the top of the support platform (102) and matched with the feed inlet (103), and a discharge valve (105) fixedly installed at the bottom of the reaction kettle body (101); The processing mechanism (200) comprises a servo motor (201) adaptively installed on the outer surface of the reaction kettle body (101), a connecting column (202) fixedly installed on the output end of the servo motor (201) through a shaft coupling, a notch bevel gear (203) fixedly sleeved on the outer surface of the connecting column (202), a stirring assembly (204) matched with the reaction solvent for reciprocating stirring, and a cleaning assembly (205) matched with the inner wall of the reaction kettle body (101) for cleaning.

2. The high-efficiency liquefaction reactor for agricultural use according to claim 1, characterized by: The stirring assembly (204) comprises a rotating shaft (204a) fixedly installed on the inner surface of the reaction kettle body (101) through a bearing sleeve, a first bevel gear (204b) and a second bevel gear (204c) fixedly sleeved on the two side surfaces of the rotating shaft (204a) and matched with the notch bevel gear (203), and a plurality of stirring blades (204d) welded on the outer end surface of the rotating shaft (204a).

3. The high-efficiency liquefaction reactor for agricultural use according to claim 2, characterized by: The directions of the first bevel gear (204b) and the second bevel gear (204c) are opposite, and the stirring blades (204d) are located in the inner cavity of the reaction kettle body (101).

4. The high-efficiency liquefaction reactor for agricultural use according to claim 3, characterized by: The cleaning assembly (205) comprises a first belt disc (205a) fixedly sleeved on the outer surface of the rotating shaft (204a), a belt (205b) sleeved on the outer surface of the first belt disc (205a), a second belt disc (205c) sleeved on the inner surface of the other end of the belt (205b), and a first ratchet wheel (205d) fixedly installed on the outer end surface of the second belt disc (205c).

5. The high-efficiency liquefaction reactor for agricultural use according to claim 4, characterized by: The cleaning assembly (205) further comprises a second ratchet wheel (205e) engaged with the outer surface of the first ratchet wheel (205d), a spline shaft (205f) fixedly connected to the other side of the second ratchet wheel (205e), a spline shaft sleeve (205g) slidably sleeved on the outer surface of the spline shaft (205f), a spring (205h) fixedly installed on the inner wall of the spline shaft sleeve (205g) and matched with the spline shaft (205f), and a reciprocating roller (205i) fixedly connected to the through end of the spline shaft sleeve (205g).

6. The high-efficiency liquefaction reactor for agricultural use according to claim 5, characterized by: The cleaning assembly (205) further comprises a sleeve (205j) slidably sleeved on the outer surface of the reciprocating roller (205i), a scraper disc (205k) fixedly connected to the outer surface of the sleeve (205j), and a limiting rod (205l) fixedly connected to the inner wall of the reaction kettle body (101) and matched with the cleaning assembly (205).

7. The high-efficiency liquefaction reactor for agricultural use according to claim 6, characterized by: The spline shaft sleeve (205g) is provided with a bearing sleeve matched with rotation at the connection with the reactor body (101), and the inner surface of the scraper disc (205k) is in sliding contact with the outer surface of the limiting rod (205l).

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