Dewaxing water recycling device

Abstract

The utility model discloses a dewaxing water recycling device, which belongs to the technical field of polyethylene wax production devices and comprises a first wax tank, a pipeline arranged on one side of the first wax tank and provided with a gate valve b, a pipe arranged on the upper portion of the first wax tank and provided with a ball valve h, and a collecting device arranged on the lower side of the first wax tank. The collecting device is connected with a recovery device through a pipeline, one path of the recovery device is connected with a first wax tank through a pipeline, and the other path of the recovery device is connected with a second wax tank through a pipeline. A pipeline is arranged on one side of the second wax tank and provided with a gate valve a. A pipeline is arranged on the upper portion of the second wax tank and provided with a ball valve i and a three-way valve. The pipeline where a ball valve h is located is connected with the three-way valve. According to the polyethylene wax cooling water recycling device, separation, filtering and recycling of polyethylene wax cooling process water are achieved, continuous recycling and continuous utilization are achieved, the production efficiency of polyethylene wax is improved, and the process water is greatly saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to polyethylene wax production device technical field, specifically is a kind of wax discharge water recycling device. BACKGROUND

[0002] Polyethylene (PE) wax is also known as high molecular wax, which is a kind of PE with low relative molecular mass of 500-5000; polyethylene wax is a kind of synthetic high molecular wax, which has high softening point, low melting degree, good dispersibility and flowability, good compatibility with other polyolefin resins, and excellent properties such as moisture resistance at room temperature, chemical resistance and electrical properties.

[0003] Polyethylene wax is widely used in the fields of polyvinyl chloride (PVC), color master batch, hot melt adhesive and paint due to its excellent properties such as cold resistance, heat resistance, chemical resistance and wear resistance.

[0004] Compared with other preparation methods of polyethylene wax, polyethylene wax prepared by polymerization has excellent product properties; "Polyethylene Wax Preparation Process Progress" proposes that polyethylene wax is obtained by ethylene polymerization, and the product obtained by this method has small relative molecular mass distribution, high purity, stable quality and adjustable performance, and can be used to produce high-end polyethylene wax.

[0005] The slurry method for producing HDPE of LyondellBasell (LyondellBasell Industries) produces polyethylene wax as by-product by using polymerization method; the wax produced by LyondellBasell slurry method is in molten state, and needs to be condensed; in this process, a large amount of industrial water needs to be added to the wax tank for cooling to solidify the molten wax; the existing technology not only discharges the solid polyethylene, but also discharges the used industrial water, which not only causes a large amount of waste of industrial water, but also pollutes the environment. UTILITY MODEL CONTENTS

[0006] In order to solve the technical problems mentioned in the background, the utility model provides a wax discharge water recycling device, which adopts the following technical scheme:

[0007] The utility model discloses a first wax tank is provided with pipeline on one side and is provided with gate valve b on the pipeline, is provided with pipe on the upper portion of first wax tank and is provided with ball valve h on the pipeline, is provided with pipeline on the bottom of first wax tank and is provided with ball valve a on the pipeline, is provided with collecting device on the lower side of first wax tank, collecting device is connected with recycling device through pipeline, recycling device is connected with first wax tank through pipeline one way and is connected with second wax tank one way, second wax tank is provided with pipeline on one side and is provided with gate valve a on the pipeline, is provided with pipeline on the upper portion of second wax tank and is provided with ball valve i and three-way valve on the pipeline, ball valve h is connected with three-way valve on the pipeline, is provided with pipeline on the bottom of second wax tank and is provided with ball valve b on the pipeline.

[0008] Further, the collecting device comprises a ditch, a plurality of wax bags are arranged in the ditch, and the collecting device is connected with the recycling device through pipelines.

[0009] Further, the recycling device comprises a water pool, the water pool is connected with the ditch through pipelines, one side of the water pool is provided with pipelines, ball valves c and a centrifugal pump are arranged on the pipelines, the centrifugal pump is provided with pipelines connected with the first wax tank, ball valves e and g are arranged on the pipelines, branch pipelines connected with the second wax tank are arranged on the pipelines where the ball valves e are located, and ball valves d and f are arranged on the branch pipelines.

[0010] The polyethylene wax in the first wax tank is cooled and solidified by process water, and then is discharged from the first wax tank along with the process water, and falls into the collecting device, so that the process water and the polyethylene wax are separated and filtered through the collecting device, the supernatant of the separated process water in the collecting device enters the recycling device, and the process water in the recycling device enters the second wax tank to cool the polyethylene wax in the second wax tank, and the process water in the second wax tank is provided to the first wax tank after being filtered and discharged, to cool the polyethylene wax in the first wax tank, the polyethylene wax cooling process water is separated, filtered and reused, and continuous recycling and continuous utilization are realized, the production efficiency of the polyethylene wax is improved, and the process water is greatly saved. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 A flow chart of the utility model.

[0012] The drawings show that 1 is a first wax tank, 2 is a second wax tank, 3 is a ball valve a, 4 is a ball valve b, 5 is a ditch, 6 is a wax bag, 7 is a water pool, 8 is a ball valve c, 9 is a centrifugal pump, 10 is a ball valve d, 11 is a ball valve e, 12 is a ball valve f, 13 is a ball valve g, 14 is a three-way valve, 15 is a gate valve a, 16 is a gate valve b, 17 is a ball valve h, and 18 is a ball valve i. DETAILED DESCRIPTION

[0013] The technical solutions in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0014] The utility model discloses a kind of wax removal water recycling devices, including first wax tank 1, polyethylene wax liquid is contained in first wax tank 1, pipeline is provided on the side of first wax tank 1 and pipeline is provided with gate valve b16, gate valve b16 controls the switch of this pipeline and polyethylene wax liquid is introduced into first wax tank 1 by this pipeline, pipe is provided on the upper portion of first wax tank 1 and pipeline is provided with ball valve h17, ball valve h17 controls the switch on this pipeline and as supplementary process water passes through this pipeline into first wax tank 1, pipeline is provided on the bottom of first wax tank 1 and pipeline is provided with ball valve a3, ball valve a3 controls the switch of this pipeline and polyethylene wax and process water in first wax tank 1 are discharged by this pipeline, collecting device is provided on the lower side of first wax tank 1, collects polyethylene wax and process water, and process water is filtered, separates, and recycling device is connected by pipeline, recycling device is connected with first wax tank 1 by pipeline one way, one way is connected with second wax tank 2, pipeline is provided on the side of second wax tank 2 and pipeline is provided with gate valve a15, gate valve a15 controls the switch of this pipeline and polyethylene wax liquid passes through this pipeline into second wax tank 2, pipeline is provided on the upper portion of second wax tank 2 and pipeline is provided with ball valve i18 and three-way valve 14, ball valve i18 controls the switch of this pipeline and supplementary process water passes through three-way valve 14 into this pipeline, pipeline where ball valve h17 is located is connected with three-way valve 14, pipeline is provided on the bottom of second wax tank 2 and pipeline is provided with ball valve b4, ball valve b4 controls the switch of this pipeline and polyethylene wax and process water in second wax tank 2 are discharged by this pipeline.

[0015] Collecting device includes ditch 5, and a plurality of wax bags 6 are provided in ditch 5, and collecting device is connected with recycling device by pipeline, and polyethylene wax and process water falling in first wax tank 1 or second wax tank 2 fall in wax bag 6, and large impurities in polyethylene wax and process water are intercepted in wax bag 6, and process water is filtered and flows into ditch 5 through wax bag 6.

[0016] Recycling device includes water pool 7, and water pool 7 is connected with ditch 5 by pipeline, and pipeline is provided on the side of water pool 7 and pipeline is provided with ball valve c8 and centrifugal pump 9, ball valve c8 controls the switch of this pipeline and makes supernatant in process water in ditch 5 be pumped into water pool 7 by centrifugal pump 9, and pipeline connected with first wax tank 1 is provided on centrifugal pump 9 and pipeline is provided with ball valve e11 and ball valve g13, ball valve e11 and ball valve g13 control the switch of this pipeline, and branch pipeline connected with second wax tank 2 is provided on the pipeline where ball valve e11 is located and branch pipeline is provided with ball valve d10 and ball valve f12, ball valve d10 and ball valve f12 control the switch of this branch pipeline.

[0017] The utility model discloses a working principle as follows: opening the gate valve b16, the polyethylene wax liquid passes through the pipeline and enters the first wax tank 1, opening the ball valve h17, the process water passes through the three-way valve 14 and the pipeline and enters the first wax tank 1, and the process water makes the polyethylene wax liquid in the first wax pipe 1 cool into solid, then opening the ball valve a3, the polyethylene wax in the first wax tank 1 and process water fall in the wax bag 6, and the polyethylene wax and the big block impurity are intercepted in the wax bag 6, and the process water flows to the ditch 5 through the wax bag 6, and the small particle impurity in the process water in the ditch 5 deposits at the bottom of the ditch 5, opening the ball valve c8, and starting centrifugal pump 9, so that the supernatant of the process water in the ditch 5 passes through the pipeline and enters the pool 7, opening the ball valve d10 and the ball valve f12, and the process water in the pool 7 is sent into the second wax tank 2 according to certain flow, opening the gate valve a5, and the polyethylene wax liquid passes through the pipeline and enters the second wax tank 2, and closes the ball valve a3 simultaneously, and the polyethylene wax liquid in the second wax tank 2 is cooled by the process water, and opening the ball valve b4, and the polyethylene wax and the process water in the second wax tank 2 fall into the wax bag 6 through the pipeline, and the ball valve d10 and the ball valve f12 are closed at this time, and opening the ball valve e11 and the ball valve g13, and the process water in the pool 7 is sent into the first wax tank 1 through centrifugal pump 9 and the pipeline, so that the process water of polyethylene wax cooling is separated, filtered and reused, and continuous recovery and continuous utilization are realized.

[0018] The utility model discloses simple operation, convenient to use is suitable for overall popularization and application. Although the embodiment of the utility model has been shown and described, for the ordinary skilled person in the art, can understand that these embodiments can be changed, modified, replaced and changed in many ways without departing from the principle and spirit of the utility model, and the range of the utility model is defined by the appended claims and its equivalents.

Claims

1. A wax discharge water recycling device, comprising a first wax tank (1), one side of the first wax tank (1) is provided with a pipeline, and a gate valve b (16) is arranged on the pipeline; the upper part of the first wax tank (1) is provided with a pipeline, and a ball valve h (17) is arranged on the pipeline, characterized in that, The bottom of the first wax tank (1) is provided with a pipeline, and a ball valve a (3) is arranged on the pipeline; the lower side of the first wax tank (1) is provided with a collecting device; the collecting device is connected with a recycling device through a pipeline; the recycling device is connected with the first wax tank (1) through a pipeline, and is connected with a second wax tank (2) through a pipeline; one side of the second wax tank (2) is provided with a pipeline, and a gate valve a (15) is arranged on the pipeline; the upper part of the second wax tank (2) is provided with a pipeline, and a ball valve i (18) and a three-way valve (14) are arranged on the pipeline; a pipeline where a ball valve h (17) is located is connected with the three-way valve (14); the bottom of the second wax tank (2) is provided with a pipeline, and a ball valve b (4) is arranged on the pipeline; The collecting device comprises a ditch (5), and a plurality of wax bags (6) are arranged in the ditch (5); the collecting device is connected with the recycling device through a pipeline; The recycling device comprises a water tank (7), and the water tank (7) is connected with the ditch (5) through a pipeline; one side of the water tank (7) is provided with a pipeline, and a ball valve c (8) and a centrifugal pump (9) are arranged on the pipeline; the centrifugal pump (9) is provided with a pipeline connected with the first wax tank (1), and a ball valve e (11) and a ball valve g (13) are arranged on the pipeline; a branch pipeline connected with the second wax tank (2) is arranged on the pipeline where the ball valve e (11) is located, and a ball valve d (10) and a ball valve f (12) are arranged on the branch pipeline.

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