Conduction oil energy-saving system for polyisobutene production

Abstract

The utility model belongs to the technical field of polyisobutene production and application, and particularly relates to a conduction oil energy-saving system for polyisobutene production. Comprising a natural gas heat conduction oil boiler and a hot water tank, the hot water tank is communicated with a water hose, a steam pipe used for heating soft water in the water hose is further arranged on the hot water tank, a smoke pipeline of the natural gas heat conduction oil boiler is communicated with an energy saver, and the water hose penetrates through the energy saver. And the water hose exchanges heat with flue gas and then enters the hot water tank. According to the utility model, the characteristics of no impurity and more than 100 DEG C of flue gas of the heat-conducting oil boiler are fully utilized, the heat-conducting oil boiler is communicated with the water hose through the energy saver, and the soft water in the water hose is preheated, so that the temperature of the soft water is increased, the consumption of steam is further reduced, and the purposes of energy conservation and emission reduction are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of polyisobutene production application, and particularly relates to a heat-conducting oil energy-saving system for polyisobutene production. Background Art

[0002] Polyisobutene (abbreviation: PIB) is a colorless, odorless, non-toxic viscous or semi-solid substance, with good heat resistance, oxygen resistance, ozone resistance, chemical resistance, weather resistance, ultraviolet resistance, acid resistance and alkali resistance. It has high volume resistivity, small expansion coefficient, no dielectric harmful substances, excellent electrical insulation, and no residual carbon after cracking. In addition to being widely used in lubricating oil additives, petroleum additives, putty adhesive, chewing gum additives and electrical insulation materials, it is also widely used in fields such as rubber high polymers, and has broad development and utilization prospects.

[0003] In the existing polyisobutene production process, heat-conducting oil is needed to heat the equipment to remove the volatile components in the glue solution. The heat-conducting oil boiler heats the heat-conducting oil through natural gas, sends the hot oil into the production device through an oil pump, and sends the return oil back to the boiler through an oil pump for recycling. During the combustion process of the heat-conducting oil boiler, high-temperature flue gas will be generated, and the temperature of the flue gas is more than 100 degrees. Since the combustion product of natural gas is only carbon dioxide, the direct discharge of these pollution-free flue gases causes a large amount of resource waste. Therefore, how to effectively utilize these flue gases to achieve the purpose of energy saving is a problem that needs to be solved at present. Content of the Utility Model

[0004] Aiming at the technical problem of heat loss of the flue gas of the existing heat-conducting oil boiler, the utility model provides a heat-conducting oil energy-saving system for polyisobutene production, which has reasonable design, simple structure and can effectively utilize the flue gas of the heat-conducting oil boiler to reduce energy consumption.

[0005] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: The utility model provides a heat-conducting oil energy-saving system for polyisobutene production, including a natural gas heat-conducting oil boiler and a hot water tank. The hot water tank is connected with a soft water pipe, and a steam pipe for heating the soft water in the soft water pipe is also arranged on the hot water tank. It is characterized in that the flue gas pipeline of the natural gas heat-conducting oil boiler is connected with an economizer, the soft water pipe passes through the economizer, and the soft water pipe enters the hot water tank after heat exchange with the flue gas.

[0006] Preferably, the energy saver includes an energy saver body arranged in a cuboid shape. An inlet smoke pipe and an outlet smoke pipe are respectively arranged at both ends of the energy saver body. A fixing plate is arranged inside the energy saver body, which is arranged close to both ends of the energy saver body. A smoke gas pipe is arranged between the fixing plates. A heat exchange pipe is sleeved outside the smoke gas pipe. A placement plate for fixing the heat exchange pipe is arranged inside the energy saver body, which is arranged at both ends of the heat exchange pipe and between the two fixing plates. A soft water inlet pipe and a soft water outlet pipe are also arranged on the energy saver body, which are respectively arranged at both ends of the energy saver body and between the fixing plate and the placement plate.

[0007] Preferably, an auxiliary inlet smoke pipe and an auxiliary outlet smoke pipe are also arranged on the energy saver body. The pipe orifices of the auxiliary inlet smoke pipe and the auxiliary outlet smoke pipe are both arranged between the two placement plates, and the auxiliary inlet smoke pipe is communicated with the outlet smoke pipe.

[0008] Preferably, a spiral guide plate is arranged inside the smoke gas pipe.

[0009] Preferably, a spiral heat exchange plate is arranged between the smoke gas pipe and the heat exchange pipe.

[0010] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0011] 1. The present utility model provides a heat transfer oil energy saving system for polyisobutylene production, which makes full use of the characteristics of the flue gas of the heat transfer oil boiler without impurities and above 100 °C, connects it with the soft water pipe through the energy saver, preheats the soft water in the soft water pipe, improves the temperature of the soft water, and further reduces the consumption of steam, so as to achieve the purpose of energy conservation and emission reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for description in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0013] Figure 1 It is a schematic structural diagram of the heat transfer oil energy saving system for polyisobutylene production provided in Embodiment 1;

[0014] Figure 2 It is a schematic structural diagram of the energy saver provided in Embodiment 1;

[0015] Figure 3 It is a schematic structural diagram of the heat exchange pipe and the smoke gas pipe provided in Embodiment 1;

[0016] In the above figures, 1 is a natural gas heat-conducting oil boiler; 2 is a hot water tank; 21 is a soft water pipe; 22 is a steam pipe; 3 is an economizer; 31 is an inlet flue pipe; 32 is an outlet flue pipe; 33 is a fixing plate; 34 is a placing plate; 35 is a soft water inlet pipe; 36 is a soft water outlet pipe; 37 is an auxiliary inlet flue pipe; 38 is an auxiliary outlet flue pipe; 39 is a partition plate; 4 is a flue gas pipe; 5 is a heat exchange pipe; 6 is a spiral guide plate; 7 is a spiral heat exchange plate. Detailed implementation mode

[0017] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0018] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the present invention is not limited by the specific embodiments disclosed in the following specification.

[0019] Embodiment 1, as Figures 1 to 3 shown, the purpose of this embodiment is to effectively utilize the flue gas generated by the natural gas heat-conducting oil boiler 1 to achieve the purpose of energy conservation and emission reduction. For this reason, the heat-conducting oil energy-saving system for polyisobutylene production provided in this embodiment includes the natural gas heat-conducting oil boiler 1 and the hot water tank 2. The hot water tank 2 is the hot water tank 2 in the existing polyisobutylene production device, and it is mainly used for washing the polymerized rubber solution with water. A soft water pipe 21 is connected to the hot water tank 2, and a steam pipe 22 for heating the soft water in the soft water pipe 21 is also provided on the hot water tank 2. The above structures are existing structures, so in this embodiment, no detailed description will be given.

[0020] Considering that the temperature of the flue gas is above 100°C, its temperature can be used for heat exchange to heat the soft water, realizing the preheating of the soft water, and then reducing the consumption of steam. For this reason, in this embodiment, the flue gas pipe 4 of the natural gas heat-conducting oil boiler 1 is connected to an economizer 3. The economizer 3 is a heat exchanger, and the soft water pipe 21 passes through the economizer 3. After the soft water pipe 21 exchanges heat with the flue gas, it enters the hot water tank 2. In this way, the energy required to heat the soft water after heat exchange with the flue gas is reduced, and the purpose of reducing steam consumption is achieved.

[0021] Considering that the combustion product of natural gas is only carbon dioxide, thus, its flue gas will not produce other residues (such as dust). For this reason, in order to effectively utilize the flue gas, this embodiment also specifically provides an economizer 3. Specifically, the economizer 3 includes an economizer body arranged in a cuboid shape. The economizer body is arranged in a cuboid box shape, that is, it is hollow. A smoke inlet pipe 31 and a smoke outlet pipe 32 are respectively arranged at both ends of the economizer body. The smoke inlet pipe 31 is communicated with the smoke pipe 4 of the natural gas heat-conducting oil boiler 1. The smoke outlet pipe 32 is used to discharge the heat-exchanged flue gas. A fixing plate 33 is arranged inside the economizer body. The fixing plate 33 is arranged close to both ends of the economizer body. In this way, by the arrangement of the fixing plate 33, a smoke inlet cavity and a smoke outlet cavity are formed at both ends of the economizer body. A smoke pipe 4 is arranged between the fixing plates 33. The pipe orifices of the smoke pipe 4 are communicated with the smoke inlet cavity and the smoke outlet cavity. In this way, the flue gas enters the smoke outlet cavity through the smoke pipe 4. In this embodiment, in order to increase the heat exchange area, the smoke pipes 4 are evenly distributed on the fixing plate 33.

[0022] In order to achieve the purpose of heat exchange, in this embodiment, a heat exchange pipe 5 is sleeved outside the smoke pipe 4. A placement plate 34 for fixing the heat exchange pipe 5 is arranged inside the economizer body. The placement plate 34 is arranged at both ends of the heat exchange pipe 5. The placement plate 34 is arranged between the two fixing plates 33. In this way, an inlet water cavity and an outlet water cavity are formed between the fixing plate 33 and the placement plate 34. At the same time, a soft water inlet pipe 35 and a soft water outlet pipe 36 are also arranged on the economizer body. The soft water inlet pipe 35 and the soft water outlet pipe 36 are respectively arranged at both ends of the economizer body. The soft water inlet pipe 35 and the soft water outlet pipe 36 are both arranged between the fixing plate 33 and the placement plate 34. That is, the soft water inlet pipe 35 is communicated with the inlet water cavity, and the soft water outlet pipe 36 is communicated with the outlet water cavity. In this way, under the action of the heat exchange pipe 5, the soft water flows from the inlet water cavity to the outlet water cavity. Of course, both the soft water inlet pipe 35 and the soft water outlet pipe 36 are communicated with the soft water pipe 21.

[0023] Considering that both the smoke pipe 4 and the heat exchange pipe 5 are straight pipes and their heat exchange efficiency is low, and the flue gas is carbon dioxide, thus, blocking the flue gas will not cause the accumulation of dust, thereby affecting the heat exchange effect. For this reason, a spiral guide plate 6 is arranged inside the smoke pipe 4. The spiral guide plate 6 makes the flowing time of the flue gas longer, thereby improving the heat exchange efficiency. In order to further improve the heat exchange efficiency, a spiral heat exchange plate 7 is arranged between the smoke pipe 4 and the heat exchange pipe 5. The arrangement of the spiral heat exchange plate 7 has two purposes. The first is to retard the flowing speed of the soft water, and the second is to form a heat exchange fin structure on the spiral heat exchange plate 7, thereby improving the heat exchange effect.

[0024] Considering the flow velocity of the flue gas and the fact that it still contains a large amount of heat, in this embodiment, an auxiliary smoke inlet pipe 37 and an auxiliary smoke outlet pipe 38 are further provided on the economizer body. The pipe orifices of the auxiliary smoke inlet pipe 37 and the auxiliary smoke outlet pipe 38 are both arranged between the two placing plates 34, and the auxiliary smoke inlet pipe 37 is communicated with the smoke outlet pipe 32. In this way, the flue gas enters the economizer body again, forming a wrap around the heat exchange pipe 5, thereby heating the soft water from both the inside and the outside, and improving the heat exchange effect.

[0025] Similarly, in order to further improve the heat exchange effect, a partition plate 39 is provided in the economizer body. The partition plate 39 forms an S-shaped flow channel for the flue gas flowing in the economizer body, reducing the flow velocity, and thus improving the heat exchange effect.

[0026] Through tests, when the length of the economizer body is 2m, the width is 0.4m, and the height is 0.2m, the high temperature of the flue gas can be used to heat water from 20°C to 50°C, and 3 - 4 tons of hot water can be heated per hour.

[0027] The above is only a preferred embodiment of the present invention, and it is not intended to limit the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A heat transfer oil energy-saving system for polyisobutylene production, comprising a natural gas heat transfer oil boiler and a hot water tank, wherein the hot water tank is connected to a soft water pipe, and the hot water tank is also provided with a steam pipe for heating soft water in the soft water pipe, characterized in that: The flue gas pipeline of the natural gas thermal oil boiler is connected to an economizer, the soft water pipe is arranged through the economizer, and the soft water pipe enters the hot water tank after heat exchange with the flue gas.

2. The heat transfer oil energy-saving system for polyisobutylene production according to claim 1, characterized in that: The energy saver includes an energy saver body which is in a rectangular shape, a smoke inlet pipe and a smoke outlet pipe are respectively arranged at two ends of the energy saver body, a fixing plate is arranged in the energy saver body, the fixing plate is arranged close to the two ends of the energy saver body, a smoke pipe is arranged between the fixing plates, a heat exchange pipe is arranged outside the smoke pipe, a placement plate for fixing the heat exchange pipe is arranged in the energy saver body, the placement plate is arranged at both ends of the heat exchange pipe, the placement plate is arranged between two fixing plates, a soft water inlet pipe and a soft water outlet pipe are also arranged on the energy saver body, the soft water inlet pipe and the soft water outlet pipe are respectively arranged at two ends of the energy saver body, and the soft water inlet pipe and the soft water outlet pipe are both arranged between the fixing plate and the placement plate.

3. The heat transfer oil energy-saving system for polyisobutylene production according to claim 2, characterized in that: The energy saver body is also provided with an auxiliary smoke inlet pipe and an auxiliary smoke outlet pipe, the pipe openings of the auxiliary smoke inlet pipe and the auxiliary smoke outlet pipe are both arranged between two placement plates, and the auxiliary smoke inlet pipe is connected to the smoke outlet pipe.

4. The heat transfer oil energy-saving system for polyisobutylene production according to claim 3, characterized in that: A spiral guide plate is arranged in the smoke pipe.

5. The heat transfer oil energy-saving system for polyisobutylene production according to claim 4, characterized in that: A spiral heat exchange plate is arranged between the flue gas pipe and the heat exchange pipe.

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