CN212999931U

CN212999931U - Reation kettle is used in epoxidized soybean oil production

Info

Publication number: CN212999931U
Application number: CN202021723506.2U
Authority: CN
Inventors: 徐健; 孙鹏杰
Original assignee: Nantong Haierma Technology Co ltd
Current assignee: Nantong Haierma Technology Co ltd
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2021-04-20
Anticipated expiration: 2030-08-18

Abstract

The utility model relates to a reaction kettle for producing epoxidized soybean oil, which comprises a reaction kettle body, wherein the reaction kettle body comprises a barrel body, an upper end socket and a lower end socket; the heat exchange assembly is arranged in the reaction kettle body and comprises a coil type heat exchanger; and the circulating assembly comprises a circulating pipeline arranged outside the barrel, a feed inlet of the circulating pipeline is connected with the bottom end of the barrel, a discharge outlet of the circulating pipeline is connected with the top end of the barrel, a discharge pipe communicated with the discharge outlet of the circulating pipeline is also arranged in the barrel, and the discharge outlet of the discharge pipe faces the heat exchanger. The utility model has the advantages that: through mutually supporting between circulation subassembly and the heat exchange assembly, realize the circulation flow of liquid, the discharging pipe of deuterogamying directly sprays the solution of leak on the surface of heat exchanger, realizes not only having realized the mixture of solution to the heat transfer of solution, also can ensure that all solution homoenergetic and heat exchanger contact heat transfer, have improved heat transfer effect greatly.

Description

Reation kettle is used in epoxidized soybean oil production

Technical Field

The utility model relates to an epoxidized soybean oil production field, in particular to reation kettle is used in epoxidized soybean oil production.

Background

Epoxidized soybean oil is a nontoxic non-benzene environmental-friendly plastic additive-plasticizer which is widely applied at present, has double performances of plasticization and thermal stability, is nontoxic, safe and environment-friendly, is favored by the plastic product industry, and is widely applied in the industrial fields of plastics, coatings, novel high polymer materials, rubber and the like. Along with the improvement of environmental awareness of countries in the world, the toxicity of the plasticizer is more and more concerned by people; plasticizers phthalate esters are suspected of being carcinogenic, and their use in plastic products such as medical and food packaging, daily necessities, toys, etc. has been banned in many developed countries. And because the petroleum supply is slightly tight, the market price of the international and domestic plasticizer rises, and the raw materials mainly utilized by the epoxidized soybean oil and the epoxidized fatty acid are renewable resources, so that the product has wide market prospect.

The method for oxidizing the soybean oil mainly comprises a solvent method and a solvent-free method: (1) the solvent method needs a large amount of organic solvents such as benzene, toluene, heptane, hexane, chloroform and the like, causes environmental pollution, needs a large amount of production equipment, has large treatment capacity of three wastes, produces the epoxy soybean with low epoxy value and poor product quality, and is basically eliminated step by step. (2) The solvent-free method mainly comprises the steps of taking formic acid or acetic acid as an active oxygen carrier, taking 27-50% hydrogen peroxide as an oxygen donor, carrying out epoxidation reaction under the action of a catalyst, dropwise adding the epoxy agent into soybean oil within a certain temperature range, wherein the commonly used catalyst comprises sulfuric acid and strong-acid cation exchange resin, the catalyst for synthesizing epoxidized soybean oil also comprises solid acid (such as aluminum sulfate and ferric sulfate), heteropoly acid, solid super acid, a molecular sieve and the like, and carrying out alkali washing, water washing, reduced pressure distillation and water removal after epoxidation reaction to finally obtain the product. Short reaction flow, low reaction temperature, short reaction time, few byproducts, high epoxy value of the product, light color, good product quality, easy production control and simple and convenient operation.

At present, in the process of producing epoxidized soybean oil, a reaction kettle is inevitably used for reaction, soybean oil, hydrogen peroxide and formic acid are added into the reaction kettle for mixing during production, and a stirring paddle arranged in the reaction kettle is used for stirring and mixing the mixed solution for reaction, so that the epoxidized soybean oil is prepared, and in the reaction, the reaction temperature control is required to be involved. The traditional temperature control adopts a coil type heat exchanger installed in a reaction kettle to exchange heat with solution so as to meet the temperature requirement, but the certain defect can exist in the way: firstly, a stirring paddle needs to be installed in the reaction kettle for stirring, so that the problems of mutual interference and the like between the stirring paddle and a heat exchanger are avoided when the reaction kettle is used, and the reaction kettle is very troublesome in installation, subsequent maintenance, replacement and the like; in addition, in the process of heat exchange, although the stirring paddle is used for stirring, the heat exchanger can be in contact with the solution of the same part for heat exchange for a long time due to the limitation of stirring of the stirring paddle, and the overall heat exchange effect is not good.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a reation kettle is used in epoxidized soybean oil production of installation maintenance convenience, heat transfer effect are good.

In order to solve the technical problem, the utility model adopts the technical scheme that: the utility model provides an epoxy soybean oil production is with reation kettle, its innovation point lies in: comprises that

The reaction kettle body comprises a barrel, an upper end enclosure and a lower end enclosure, wherein the barrel is of a hollow cylindrical structure with openings at the upper end and the lower end, and the upper end enclosure and the lower end enclosure are respectively connected to the upper side and the lower side of the barrel;

the heat exchange assembly is arranged in the reaction kettle body and comprises a coil type heat exchanger arranged in the reaction kettle body;

a circulation subassembly, the circulation subassembly includes a circulating line who sets up in the barrel outside, and this circulating line's feed inlet links to each other with the bottom of barrel, and circulating line's discharge gate links to each other with the top of barrel, still installs the discharging pipe that is linked together with circulating line's discharge gate simultaneously in the barrel, and the discharge gate of this discharging pipe faces the heat exchanger, and the discharging pipe slope sets up, and its incline direction is for the discharge gate orientation downward sloping gradually from circulating line's discharge gate to discharging pipe, still installs the circulating pump on circulating line.

Furthermore, the coiled heat exchanger is integrally in a conical shape, and the size of the top end of the heat exchanger is smaller than that of the bottom end of the heat exchanger.

Furthermore, the discharge pipes are two in total and are respectively positioned at two sides of the heat exchanger, and the discharge holes of the circulating pipeline are also two and are respectively connected with the two discharge pipes in a one-to-one correspondence manner.

The utility model has the advantages that: the utility model discloses in, through mutually supporting between circulation subassembly and the heat exchange assembly, realize the circulation flow with the internal solution of anti-kettle, the discharging pipe of deuterogamying, directly spray the solution of leak on the surface of heat exchanger, realize the heat transfer to solution, such a mode, not only realize the mixture of solution, also can ensure all solution homoenergetic and heat exchanger contact heat transfer, the heat transfer effect has been improved greatly, and whole reation kettle no longer need use the stirring rake, the structure is simplified, to the installation, maintain, change convenience all relatively.

The whole design of coil heat exchanger is the toper form, such design for solution can be along the surface downward flow gradually of heat exchanger after being sprayed on the heat exchanger surface by the discharging pipe, has increased the contact time of solution with the heat exchanger, further improvement heat transfer effect.

The discharging pipes are designed to be two and distributed on two sides of the heat exchanger, so that heat exchange can be carried out simultaneously from two sides of the heat exchanger, the utilization rate of the heat exchanger is increased, and the heat exchange efficiency is improved.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a schematic diagram of the reaction kettle for producing epoxidized soybean oil of the present invention.

Detailed Description

The following examples are presented to enable those skilled in the art to more fully understand the present invention and are not intended to limit the scope of the present invention.

The reaction kettle for producing epoxidized soybean oil shown in figure 1 comprises

A reaction kettle body, the reaction kettle body includes a barrel 1, an upper cover 2, a low head 3, barrel 1 is the equal open-ended hollow cylinder structure in both ends about one, and upper cover 2, low head 3 all are the arc form, and upper cover 2, low head 3 are connected respectively in the upper and lower both sides of barrel 1, and low head 3 and barrel 1 welded fastening or integrated into one piece, and it is fixed through flange transitional coupling between upper cover 2 and the barrel 1.

The heat exchange assembly is arranged in the reaction kettle body and comprises a coil type heat exchanger 4 arranged in the reaction kettle body, the heat exchanger 4 is fixed in the barrel body 1, the upper side and the lower side of the heat exchanger 4 are respectively provided with a discharge hole and a feed hole, and the discharge hole and the feed hole of the heat exchanger 4 all extend out of the barrel body 1.

The coiled heat exchanger 4 is overall in a conical shape, and the size of the top end of the heat exchanger 4 is smaller than that of the bottom end of the heat exchanger 4. The whole design of coil heat exchanger 4 is the toper form, and such design for solution can be along heat exchanger 4's surface downward flow gradually after spraying on heat exchanger 4 surface by discharging pipe 5, has increased the contact time of solution with heat exchanger 4, further improvement heat transfer effect.

A circulation subassembly, the circulation subassembly includes a circulating line 6 that sets up in the barrel 1 outside, this circulating line 6's feed inlet links to each other with barrel 1's bottom, circulating line 6's discharge gate links to each other with barrel 1's top, still install the discharging pipe 5 that is linked together with circulating line 6's discharge gate in barrel 1 simultaneously, the discharge gate of this discharging pipe 5 faces heat exchanger 4, and discharging pipe 5 slope sets up, its incline direction is the discharge gate from circulating line 6 to the discharge gate direction downward sloping gradually of discharging pipe 5, be the pipe that inclines to discharging pipe 5 design, then be for making things convenient for the ejection of compact, avoid solution to remain in discharging pipe 5, and influence goes out liquid, still install circulating pump 7 on circulating line 6.

The discharge pipes 5 are two in total and are respectively positioned at two sides of the heat exchanger 4, and the discharge holes of the circulating pipeline 6 are also two and are respectively connected with the two discharge pipes 5 in a one-to-one correspondence manner. The discharge pipe 5 is designed to be two and distributed on two sides of the heat exchanger 4, so that heat exchange can be simultaneously carried out on two sides of the heat exchanger 4, the utilization rate of the heat exchanger is increased, and the heat exchange efficiency is improved.

During the reaction, firstly, soybean oil, hydrogen peroxide and formic acid which need to react are added into a reaction kettle body, then a circulating pump 7 starts to work, mixed solution in the reaction kettle body is pumped by a circulating pipeline 6 and sprayed on the surface of the upper side of a heat exchanger 4 from a discharge pipe 5, the heat exchanger 4 also starts to work while the circulating pump 7 works, heat exchange medium enters the heat exchanger 4 from a feed inlet of the heat exchanger 4 and flows out from a discharge outlet of the heat exchanger 4, the circulation of the heat exchange medium in the heat exchanger 4 is realized, the mixed solution is sprayed on the surface of the heat exchanger 4 through the discharge pipe 5, the heat exchange with the heat exchanger 4 is realized, so as to heat the mixed solution, because the heat exchanger 4 adopts a design of small top and big bottom, the mixed solution can slowly flow downwards along the outer surface of the heat exchanger 4 after being sprayed on the upper surface of the heat exchanger 4, and the contact time of the mixed solution, the circulation is carried out, thereby achieving the dual purposes of mixing and heating the mixed solution.

Through mutually supporting between circulation subassembly and the heat exchange assembly, realize the circulation flow with the internal solution of anti-cauldron, the discharging pipe of deuterogamying, directly spray the solution of leak on the surface of heat exchanger, the realization is to the heat transfer of solution, such a mode, not only the mixture of solution has been realized, also can ensure all solution homoenergetic and heat exchanger contact heat transfer, the heat transfer effect has been improved greatly, whole reation kettle no longer need use the stirring rake moreover, the structure has been simplified, to the installation, maintain, change convenience all relatively.

It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an reation kettle is used in epoxidized soybean oil production which characterized in that: comprises that

2. The epoxidized soybean oil production reactor according to claim 1, characterized in that: the coiled heat exchanger is integrally in a conical shape, and the size of the top end of the heat exchanger is smaller than that of the bottom end of the heat exchanger.

3. The epoxidized soybean oil production reactor according to claim 1, characterized in that: the total number of the discharge pipes is two, the discharge pipes are respectively positioned at two sides of the heat exchanger, and the discharge holes of the circulating pipeline are also two and are respectively connected with the two discharge pipes in a one-to-one correspondence manner.