Efficient energy-saving ethylene glycol distillation tower

Abstract

A high-efficiency energy-saving ethylene glycol distillation tower comprises a tower body, a tubular heat exchanger and a heat recovery device, a tower bottom heater is arranged at the bottom of the tower body, and a plurality of separation tower plates and packing layers are arranged in the tower body; the heat recovery device is arranged at the exhaust port in the top of the tower body and comprises a heat exchange chamber and a condenser, the heat exchange chamber is connected with the exhaust port of the tower body, the condenser is connected with the heat exchange chamber, the condenser comprises a plurality of condensation channels, the condensation channels and the tubular heat exchanger are arranged in an overlapped mode, and the condensation channels make contact with the wall face of the tubular heat exchanger; the condenser further comprises a water outlet pipe which is connected to the bottom of the condenser. The tubular heat exchanger is arranged outside the tower body, one end of the tubular heat exchanger is connected with the heat recovery device, and the other end of the tubular heat exchanger is connected with the tower bottom heater. The utility model provides an ethylene glycol distillation tower which is efficient, energy-saving, high in purity separation and environment-friendly.

Description

Technical Field

[0001] The utility model relates to a high-efficiency and energy-saving ethylene glycol distillation tower. Background Art

[0002] This patent relates to existing distillation tower technology, which is mainly used to separate components in a liquid mixture by different boiling points. However, these traditional distillation towers have some shortcomings:

[0003] High energy consumption: Traditional distillation towers require a lot of energy to heat and cool the liquid, which increases production costs.

[0004] Complex operation: The operation of traditional distillation columns requires strict control of temperature and pressure to ensure effective separation, which is a challenge for operators.

[0005] Limited separation efficiency: When separating liquid components, traditional distillation towers may not be able to completely separate high-purity target components.

[0006] To sum up, the technical background section of this patent aims to explain the current status of the distillation tower technology field. The content of this section will provide necessary background information for understanding the technical contribution and innovation of this patent. The signals disclosed in this background technology section are only intended to increase the understanding of the overall background of the utility model and should not be regarded as implying any form of subjective consciousness. Utility Model Content

[0007] In view of the above, the purpose of the present invention is to provide a high-efficiency and energy-saving ethylene glycol distillation tower to solve at least one of the problems arising under the above-mentioned existing conditions.

[0008] The technical solution adopted to achieve the purpose of the utility model is: an efficient and energy-saving ethylene glycol distillation tower, comprising a tower body, a tubular heat exchanger, and a heat recovery device. A bottom heater is arranged at the bottom of the tower body, and the tower body comprises a plurality of separation trays and a packing layer; the heat recovery device is arranged at the exhaust port at the top of the tower body, and is used to extract heat from the steam and guide the heat back to the tower body through the tubular heat exchanger. The heat recovery device comprises a heat exchange chamber for receiving the exhaust steam and a condenser for transferring the heat in the steam to the tubular heat exchanger. The heat exchange chamber is connected to the exhaust port of the tower body, and the condenser is connected to the heat exchange chamber. The condenser comprises a plurality of condensation channels, which are arranged in a superimposed manner with the tubular heat exchanger and contact with the wall surface of the tubular heat exchanger to realize the condensation of steam and the transfer of heat. The condenser also comprises a water outlet pipe, which is connected to the bottom of the condenser, and is used to discharge the condensed water after exchanging heat with the tubular heat exchanger and generating the condensed water; the tubular heat exchanger is arranged outside the tower body, and one end of the tubular heat exchanger is connected to the heat recovery device, and the other end is connected to the bottom heater.

[0009] Furthermore, each separation tower plate is provided with a plurality of liquid overflow pipes and gas through holes. The liquid overflow pipes are used to control the liquid flow rate to ensure that the liquid is evenly distributed on the tower plate; the gas through holes allow the gas to pass through the tower plate to achieve effective contact and separation of liquid and gas.

[0010] Furthermore, the packing layer is arranged between two adjacent separation tower plates, and the packing layer is composed of a porous material made of ceramics to increase the gas-liquid contact area and improve the separation efficiency; and the packing layer is designed so that the gas-liquid two phases can be fully mixed and contacted therein without generating excessive pressure drop.

[0011] Furthermore, the tubular heat exchanger includes a plurality of parallel pipes, each of which is interconnected, a fluid with high thermal conductivity is arranged inside the pipe, and the pipe is arranged around the bottom heater of the tower, thereby improving the heat exchange efficiency, and the material of the pipe is a metal with high thermal conductivity.

[0012] The utility model of a high-efficiency energy-saving ethylene glycol distillation tower has the following beneficial effects:

[0013] 1. High efficiency and energy saving: The ethylene glycol distillation tower designed by this patent effectively recovers the heat in the steam through the heat recovery device and tubular heat exchanger, and uses it to heat the bottom of the tower, thereby reducing energy consumption.

[0014] 2. High-purity separation: The optimized design of the separation tower plates and packing layers increases the effective contact area between ethylene glycol and impurities, thereby improving the separation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] In the figure: 101 - tower body, 102 - tower bottom heater, 103 - exhaust port, 201 - tubular heat exchanger, 301 - heat exchange chamber, 302 - condenser. DETAILED DESCRIPTION

[0018] It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0019] The specific implementation is as follows:

[0020] In order to better illustrate the technical solution of this patent, this patent is described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0021] As attached Figure 1 As shown, this patent provides an efficient and energy-saving ethylene glycol distillation tower, which is mainly composed of a tower body, a tubular heat exchanger, a heat recovery device and a bottom heater. The interior of the tower body is designed with multiple separation plates and packing layers to achieve effective separation of ethylene glycol and impurities.

[0022] In this embodiment, the tower body includes multiple separation plates and packing layers; the separation plates are designed with multiple liquid overflow pipes and gas through holes, the liquid overflow pipes ensure that the liquid can be evenly distributed on the plates, and the gas through holes allow the gas to pass through, so as to achieve effective contact and separation between gas and liquid. The packing layer is located between two adjacent separation plates and is made of porous ceramic material, which increases the gas-liquid contact area and improves the separation efficiency. The design allows the gas-liquid two phases to be fully mixed and contacted therein without generating excessive pressure drop.

[0023] In this embodiment, the heat recovery device is arranged at the exhaust port at the top of the tower body, and includes a heat exchange chamber and a condenser; the heat exchange chamber is used to receive the exhausted steam, and the condenser transfers the heat in the steam to the tubular heat exchanger. The condenser contains a plurality of condensation channels, which are superimposed on the tubular heat exchanger and contact the wall surface thereof to realize the condensation of steam and the transfer of heat. The bottom of the condenser is connected with a water outlet pipe for discharging condensed water.

[0024] In this embodiment, a tubular heat exchanger is arranged outside the tower body, one end of which is connected to a heat recovery device, and the other end is connected to a bottom heater; the heat exchanger includes a plurality of parallel pipes, each of which is provided with a fluid with high thermal conductivity, and the pipe material is a metal with high thermal conductivity. The pipes are arranged around the bottom heater to improve the heat exchange efficiency.

[0025] Through the above structural design, the ethylene glycol distillation tower of this patent can effectively recover heat from steam and use the heat to heat the bottom of the tower, thereby reducing energy consumption and achieving energy saving effects. At the same time, through the optimized separation tower plate and packing layer design, the separation purity and efficiency of ethylene glycol are improved.

[0026] Working principle:

[0027] 1. Distillation process: The ethylene glycol distillation tower separates the ethylene glycol liquid containing impurities through the distillation process. In the tower body, the ethylene glycol liquid is heated to generate steam, which is then separated through separation plates and packing layers.

[0028] 2. Separation plates and packing layers: The liquid overflow pipes and gas through holes on the separation plates ensure that the liquid is evenly distributed on the plates and allow the gas to pass through, achieving effective contact and separation between gas and liquid. The packing layer is located between two adjacent separation plates, increasing the gas-liquid contact area and improving the separation efficiency.

[0029] 3. Heat recovery device: The heat recovery device located at the top of the tower extracts heat from the steam. The condenser transfers the heat in the steam to the tubular heat exchanger to achieve energy recovery.

[0030] 4. Tubular heat exchanger: The tubular heat exchanger is located outside the tower body and transfers the heat in the steam to the bottom heater through multiple parallel pipes. In this way, the heat energy is effectively recovered and energy consumption is reduced.

[0031] This implementation is only an example of this patent and should not limit the scope of protection of this patent. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this patent. Therefore, all these changes and modifications that conform to the principles of this patent should be deemed to be included in the scope of protection of this patent.

[0032] The above is an example of a specific implementation of this patent, which is for reference only and is not limited thereto. Without departing from the spirit and scope of this patent, technicians in this field can make various changes and modifications to this patent, and these changes and modifications should be included in the scope of protection of this patent.

[0033] The specific implementation of this patent is only for illustrative purposes and does not limit the scope of protection of this patent. Various changes and modifications can be made to the specific implementation of this patent without departing from the gist and spirit of this patent. These changes and modifications are within the scope covered by this patent.

[0034] It is worth noting that: in the description of the present utility model, the meaning of "multiple" is two or more than two, unless otherwise clearly and specifically defined. In the present utility model, unless otherwise clearly specified and defined, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; the circuits described in the present utility model are all commonly used circuits in the field, and other related components are all existing commonly used components. For ordinary technicians in the field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0035] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the elements of the claims be included in the present invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. An efficient and energy-saving ethylene glycol distillation tower, comprising a tower body, characterized in that: It also includes a tubular heat exchanger and a heat recovery device. A bottom heater is provided at the bottom of the tower body, and the tower body includes a plurality of separation plates and a packing layer. The heat recovery device is provided at the exhaust port at the top of the tower body, and is used to extract heat from the steam. The heat recovery device includes a heat exchange chamber for receiving the exhaust steam, and a condenser for transferring the heat in the steam to the tubular heat exchanger. The heat exchange chamber is connected to the exhaust port of the tower body, and the condenser is connected to the heat exchange chamber. The condenser includes a plurality of condensation channels, which are superimposed on the tubular heat exchanger and contact the wall of the tubular heat exchanger. The condenser also includes a water outlet pipe, which is connected to the bottom of the condenser. The tubular heat exchanger is provided outside the tower body, and one end of the tubular heat exchanger is connected to the heat recovery device, and the other end is connected to the bottom heater.

2. The high-efficiency and energy-saving ethylene glycol distillation tower according to claim 1, characterized in that: Each separation tower plate is provided with a plurality of liquid overflow pipes and gas through holes.

3. The high-efficiency and energy-saving ethylene glycol distillation tower according to claim 1, characterized in that: The packing layer is arranged between two adjacent separation tower plates, and the packing layer is composed of a porous material made of ceramics.

4. The high-efficiency and energy-saving ethylene glycol distillation tower according to claim 1, characterized in that: The tubular heat exchanger includes a plurality of parallel pipes, each of which is interconnected, a fluid with high thermal conductivity is arranged inside the pipe, the pipe is arranged around the bottom heater, and the material of the pipe is a metal with high thermal conductivity.

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