High-boiling-point alcohol-water separation tower

Abstract

The utility model discloses a high-boiling-point alcohol-water separation tower which comprises a tower body, a gas outlet is formed in the upper part of the tower body, a discharge hole is formed in the bottom of the tower body, filler is arranged in the tower body, a feed hole is formed in the upper part of the tower body, and the lower part of the tower body is heated by a heating device. The upper part of the tower body is divided into two sections of condensation areas through a heat insulation plate, the two sections of condensation areas are respectively a condensation area a and a condensation area b, a coil pipe is arranged in the condensation area a, one end of the coil pipe is a feed port a, the other end of the coil pipe is a discharge port a, the condensation area b is respectively provided with a feed port b and a discharge port b, and the high-boiling-point alcohol-water separation tower is mainly applied to separation of a high-boiling-point alcohol-water mixture.

Description

Technical Field

[0001] The utility model relates to the technical field of purification equipment, in particular to a high-boiling-point alcohol-water separation tower. Background Art

[0002] The alcohol-water separation tower in a batch polyester reactor is a crucial piece of equipment in the polyester production process. It is primarily used to separate the ethylene glycol vapor generated in the polyester reactor. Ethylene glycol and water have different boiling points: 197.3°C and 100°C, respectively. Traditional alcohol-water separation towers use a one-stage condensation process. However, in practice, these towers suffer from substantial technical issues such as low separation efficiency, high reflux rates, and poor stability.

[0003] These issues directly lead to a reduction in the degree of esterification reaction, increasing the risk of blockage in downstream pipelines or equipment, limiting the optimization and upgrading of the polyester production process, and directly affecting the quality and market competitiveness of polyester products. Therefore, it is necessary to modify the existing alcohol-water separation tower.

[0004] After many studies and practices, the applicant has achieved alcohol-water separation by using multi-stage condensation on existing equipment. In actual application, the separation effect is significant and has played a positive role in the company's production. Utility Model Content

[0005] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art and provide a solvent stripping tower. The technical solution adopted is as follows:

[0006] A high-boiling-point alcohol-water separation tower comprises a tower body, an air outlet is provided at the top of the tower, a material outlet is provided at the bottom of the tower body, a filler is provided in the tower body, and a material feed port is provided at the top of the tower body, wherein:

[0007] The lower part of the tower body is heated by a heating device, which is an electric heating jacket. The material is heated by the electric heating jacket, so that water is quickly evaporated and moves upward. The upper part of the tower body is divided into two condensation zones by a heat insulation plate. The condensation effect is improved by the innovative two-stage design. The two condensation zones are respectively condensation zone a and condensation zone b. A coil is provided in the condensation zone a, one end of the coil is a feed port a, and the other end is a discharge port a. A feed port b and a discharge port b are respectively provided on the condensation zone b. When the water vapor mixed with ethylene glycol passes through the condensation zone a, part of the ethylene glycol mixed in the water vapor is condensed and refluxed to the bottom of the tank. When the water vapor mixed with ethylene glycol passes through the condensation zone b, part of the ethylene glycol mixed in the water vapor is condensed and refluxed to the bottom of the tank, and then transported to the storage tank for storage by a circulating pump.

[0008] Preferably, in order to accurately heat the material, the heating device is an electric heating jacket.

[0009] Preferably, the condensation zone a is heat-exchanged by heat-conducting oil.

[0010] Preferably, the condensation zone b is a water condensation jacket.

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] The alcohol-water separation tower uses two-stage condensation to separate alcohol-containing and water-containing vapors. Compared with the alcohol-water separation tower with one-stage top condensation, it can effectively improve the alcohol-water separation effect, reduce the alcohol content in the separated and discharged water, and improve the polyester production efficiency and market competitiveness. The intermittent polyester reactor has two states of reaction and non-reaction, and the alcohol-water separation tower is not a single production state. The two-stage condensation is conducive to a more stable temperature environment of the alcohol-water separation tower, thereby improving the quality of polyester products. The above-mentioned separation tower is mainly used for high-boiling point alcohols, that is, alcohols with a boiling point higher than that of water. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0014] Figure 1 This is the internal structure diagram of the utility model;

[0015] In the figure: 1 tower body; 2 heating device; 3 feed port a; 4 discharge port a; 5 feed port b; 6 discharge port b; 7 filler; 8 air outlet; 9 feed port; 10 coil; 11 circulation pump; 12 heat insulation board; 13 discharge port. DETAILED DESCRIPTION

[0016] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0017] Reference Figure 1 As shown,

[0018] A high-boiling-point alcohol-water separation tower comprises a tower body 1, an air outlet 8 is provided at the upper portion of the tower body 1, a material discharge port 13 is provided at the bottom of the tower body 1, a packing 7 is provided inside the tower body 1, and a material feed port 9 is provided at the upper portion of the tower body 1. The above-mentioned tower body is an existing packed separation tower. Since the structure and function of the above-mentioned equipment belong to the prior art, the applicant will not elaborate on them here.

[0019] The core improvements of this utility model are as follows:

[0020] The utility model heats the lower part of the tower body 1 through the electric heating jacket 2, and the upper part of the tower body 1 is divided into two condensation zones by the heat insulation board 12, namely the condensation zone a and the condensation zone b. The condensation zone a is provided with a coil 10, one end of the coil 10 is a feed port a3, and the other end is a discharge port a4. The condensation zone b is respectively provided with a feed port b5 and a discharge port b6. The condensation zone a is heat-exchanged by heat-conducting oil, and the condensation zone b is a water condensation jacket.

[0021] The working principle of the utility model is as follows: when in use, the alcohol-water mixture flows downward through the filler, contacts with the upward water vapor for heat exchange, and causes part of the ethylene glycol to condense and fall downward. When the water vapor mixed with ethylene glycol passes through the condensation zone a, part of the ethylene glycol mixed in the water vapor is condensed and refluxed to the bottom of the tank. When the water vapor mixed with ethylene glycol passes through the condensation zone b, part of the ethylene glycol mixed in the water vapor is condensed and refluxed to the bottom of the tank, and then transported to the storage tank for storage through the circulation pump 11.

[0022] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A high-boiling-point alcohol-water separation tower, comprising a tower body (1), an air outlet (8) provided at the top of the tower body (1), a material discharge port (13) provided at the bottom of the tower body (1), a packing (7) provided inside the tower body (1), and a material feed port (9) provided at the top of the tower body (1), characterized in that: The lower part of the tower body (1) is heated by a heating device (2), and the upper part of the tower body (1) is divided into two condensation zones by a heat insulation plate (12), namely, condensation zone a and condensation zone b. A coil (10) is provided in the condensation zone a, one end of the coil (10) is a feed port a (3), and the other end is a discharge port a (4). The condensation zone b is provided with a feed port b (5) and a discharge port b (6).

2. A high boiling point alcohol-water separation tower as claimed in claim 1, characterized in that, The heating device (2) is an electric heating jacket.

3. A high boiling point alcohol-water separation tower as claimed in claim 1, characterized in that, The condensation zone a exchanges heat through heat-conducting oil.

4. A high boiling point alcohol-water separation tower as claimed in claim 1, characterized in that, Condensation zone b is a water condensation jacket.

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