CN215996605U - Chlorinated paraffin continuous production system - Google Patents

Abstract

The utility model relates to a chlorinated paraffin serialization production system, it includes a plurality of reation kettle that concatenate mutually by the wax oil pipeline, the chlorine house steward passes through the blast pipe that lateral conduit is connected to in each grade reation kettle, still be equipped with material cooling circulation system on each grade reation kettle, material cooling circulation system includes heat exchanger and circulating pump, heat exchanger and circulating pump concatenate the circulation discharge gate of intercommunication reation kettle lateral wall and the circulation feed inlet of bottom through the circulating line, still be equipped with venturi on the circulating line of back one-level, the mouth is got to the venturi's of one-level negative pressure behind preceding one-level reation kettle's the tail gas export through tail gas pipe connection, last one-level's reation kettle's tail gas export is connected to the absorption tank through tail gas pipe, the absorption tank is connected to tail gas processing system. The utility model discloses in letting in reation kettle by the bottom of reation kettle via venturi on the circulating line with the tail gas that preceding one-level reation kettle produced, make remaining chlorine in the tail gas react with the material, improved the conversion of chlorine.

Description

Chlorinated paraffin continuous production system

Technical Field

The utility model relates to a chlorinated paraffin production technology technical field especially relates to a chlorinated paraffin serialization production system.

Background

The chlorinated paraffin is a chlorinated derivative of paraffin, has the advantages of low volatility, flame retardance, good electrical insulation, low price and the like, can be used as a flame retardant and a polyvinyl chloride auxiliary plasticizer, and is widely used for producing products such as cable materials, floor plates, hoses, artificial leather, rubber and the like and additives such as coatings, plastic runways, lubricating oil and the like.

In the traditional chlorinated paraffin production system, 6 stages of reaction kettles are connected in series through wax oil pipes, chlorine is introduced into the top of each stage of reaction kettle, and because the reaction is an exothermic reaction, a material cooling circulation system is arranged in each stage of reaction kettle to cool reactants; however, the traditional chlorinated paraffin production system has the following defects:

1. the tail gas generated by the former stage reaction kettle is directly introduced into the next stage reaction kettle, so that the residual amount of chlorine in the tail gas discharged by the latter stage reaction kettle is gradually increased;

2. the introduced chlorine is not uniformly distributed in the reaction kettle, and the conversion rate of the chlorine is to be improved; 3. the tail gas treatment is not reasonable.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a chlorinated paraffin continuous production system with more reasonable design.

The utility model provides a technical scheme that its technical problem adopted is:

the continuous chlorinated paraffin production system comprises a plurality of reaction kettles connected in series through wax oil pipelines, a chlorine main pipe is connected to an air supply pipe in each stage of the reaction kettle through a branch pipeline, a material cooling and circulating system is further arranged on each stage of the reaction kettle and comprises a heat exchanger and a circulating pump, and the heat exchanger and the circulating pump are connected in series through a circulating pipeline and communicated with a circulating discharge hole in the side wall of the reaction kettle and a circulating feed hole in the bottom of the reaction kettle; last one-level still be equipped with venturi, preceding one-level after reation kettle's tail gas export passes through tail gas piping connection one-level venturi's negative pressure is got mouthful, last one-level reation kettle's tail gas export is connected to the absorption tank through tail gas piping connection, the absorption tank is connected to tail gas processing system.

The utility model provides a chlorinated paraffin serialization production system in a preferred embodiment, each grade reation kettle's bottom by circulating line connects out a row of material pipeline, it is equipped with the blow-off valve on the material pipeline to arrange.

In a preferred embodiment of the continuous chlorinated paraffin production system of the present invention, the bottom of the air supply pipe extends into the reaction kettle below the liquid level, and is located between the liquid level and the kettle bottom and close to the kettle bottom.

In a preferred embodiment of the continuous chlorinated paraffin production system of the present invention, the bottom sidewall of the air supply pipe is provided with a plurality of exhaust holes.

The utility model provides a chlorinated paraffin serialization production system's a preferred embodiment, be equipped with the wax oil in the absorption tank, just the absorption tank is connected to the wax oil pipeline of first order through tubing pump, return pipe and check valve.

Compared with the prior art, the utility model provides a chlorinated paraffin serialization production system's beneficial effect is:

the tail gas generated by the previous reaction kettle is introduced into the reaction kettle from the bottom of the reaction kettle through the Venturi tube on the circulating pipeline, so that residual chlorine in the tail gas reacts with materials, the problem that the residual amount of the chlorine in the tail gas discharged by the next reaction kettle is gradually increased due to the fact that the traditional tail gas is directly introduced into the next reaction kettle is solved, and the conversion rate of the chlorine is improved;

secondly, chlorine is introduced into the reaction kettle through the air supply pipe, and the side wall of the bottom of the air supply pipe is provided with a plurality of exhaust holes, so that the air supply pipe supplies air to the materials in the axial direction and the circumferential direction, the contact area of the chlorine and the materials is increased, the distribution is uniform, the materials are continuously in a rolling state while supplying the air, and the conversion rate of the chlorine is further increased;

and thirdly, tail gas generated by the system is finally absorbed by an absorption tank provided with wax oil, a small amount of chlorine in the tail gas can be used as a raw material after being converted, the raw material is not wasted, and the rest of the tail gas is treated by a tail gas treatment system.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:

fig. 1 is a schematic structural diagram of a chlorinated paraffin continuous production system provided by the utility model.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example one

This embodiment provides a chlorinated paraffin serialization production system, as shown in figure 1, include a plurality of reation kettle 1 that concatenate mutually by the wax oil pipeline, this embodiment specifically is provided with 6 grades, and chlorine house steward 2 is connected to each grade through lateral conduit 201 the blast pipe 3 in the reation kettle 1, each grade still be equipped with material cooling circulation system on the reation kettle 1 for carry out the heat transfer that circulates with reaction material, absorb the exothermic high temperature that produces of some reactions, specifically, this embodiment material cooling circulation system includes heat exchanger 4 and circulating pump 5, heat exchanger 4 and circulating pump 5 concatenate the intercommunication through the circulating pipeline the circulation discharge gate 101 of reation kettle lateral wall with the circulation feed inlet 102 of reation kettle bottom.

The method aims to solve the problem that the residual quantity of chlorine in tail gas discharged by the next-stage reaction kettle is gradually increased as the tail gas generated by the previous-stage reaction kettle of the traditional production system is directly introduced into the next-stage reaction kettle; this embodiment is in the one-level after still be equipped with venturi 6, preceding one-level behind reation kettle 1's tail gas export 103 passes through the tail gas pipe connection one-level after venturi 6's negative pressure gets the mouth, and the tail gas that preceding one-level reation kettle produced gets the mouth by venturi's negative pressure and spouts into, along with circulating material gets into reation kettle, with remaining chlorine conversion in the tail gas, last one-level reation kettle 1's tail gas export 103 passes through tail gas pipe connection to absorption tank 8, the absorption tank is connected to tail gas processing system.

Example two

On the basis of embodiment one, this embodiment is at each grade reation kettle 1's bottom by a discharge pipeline 7 is connect out to the circulating line, be equipped with relief valve 701 on the discharge pipeline 7, the setting of discharge pipeline for to reation kettle row material when overhauing or maintaining, a mouth is shared with the circulation inlet pipe to the bin outlet, and the design is more reasonable.

EXAMPLE III

In addition to the first or second embodiment, the bottom of the air pipe 3 of this embodiment extends below the liquid level in the reaction kettle 1, and is located between the liquid level and the kettle bottom and close to the kettle bottom, and preferably, a plurality of air vents 302 are provided on the sidewall of the bottom of the air pipe 3 of this embodiment. The embodiment adopts that the air feed pipe lets in chlorine to reation kettle in, because the bottom lateral wall of air feed pipe is equipped with a plurality of exhaust holes, makes the air feed pipe all feed the material in axial and circumference, has increased the area of contact of chlorine and material, and it is comparatively even to distribute, constantly makes the material form the state of rolling when feeding air, has further increased the conversion rate of chlorine.

Example four.

Based on any of the above-mentioned embodiments, be equipped with wax oil in the absorption tank 8 of this embodiment, just absorption tank 8 passes through tubing pump 9, return pipe and check valve 902 and is connected to the wax oil pipeline of first order, and the tail gas that the system produced is finally absorbed by the absorption tank that is equipped with wax oil, still can regard as raw materials to use after converting a small amount of chlorine in the tail gas, and extravagant raw materials is not gone, and other tail gases are handled by tail gas processing system.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes made by the present specification can be changed, or directly or indirectly applied to other related technical fields, and all the same principles are included in the protection scope of the present invention.

Claims (5)

1. The utility model provides a chlorinated paraffin serialization production system, includes a plurality of reation kettle that concatenate mutually by the wax oil pipeline, and chlorine house steward is connected to each grade through the lateral conduit the air supply pipe in the reation kettle, each grade still be equipped with material cooling circulation system, its characterized in that on the reation kettle: the material cooling circulation system comprises a heat exchanger and a circulating pump, and the heat exchanger and the circulating pump are connected in series through a circulating pipeline and communicated with a circulating discharge hole in the side wall of the reaction kettle and a circulating feed hole in the bottom of the reaction kettle;

last one-level still be equipped with venturi, preceding one-level after reation kettle's tail gas export passes through tail gas piping connection one-level venturi's negative pressure is got mouthful, last one-level reation kettle's tail gas export is connected to the absorption tank through tail gas piping connection, the absorption tank is connected to tail gas processing system.

2. The continuous production system of chlorinated paraffin according to claim 1, wherein: each grade reation kettle's bottom by circulation pipeline connects out a row of material pipeline, be equipped with the blow-off valve on the row of material pipeline.

3. The continuous production system of chlorinated paraffin according to claim 1, wherein: the bottom of the air supply pipe extends into the reaction kettle below the liquid level and is positioned between the liquid level and the kettle bottom and close to the kettle bottom.

4. The continuous production system of chlorinated paraffin according to claim 3, wherein: the bottom side wall of the air supply pipe is provided with a plurality of exhaust holes.

5. The continuous production system of chlorinated paraffin according to claim 1, wherein: the absorption tank is internally provided with wax oil and is connected to a first-stage wax oil pipeline through a pipeline pump, a material return pipe and a one-way valve.

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