CN215808534U

CN215808534U - RTO heat exchanger

Info

Publication number: CN215808534U
Application number: CN202122038782.6U
Authority: CN
Inventors: 梁进利; 何勇伟; 伍朕锋
Original assignee: Shenghui System Integration Group Co ltd
Current assignee: Shenghui System Integration Group Co ltd
Priority date: 2021-08-26
Filing date: 2021-08-26
Publication date: 2022-02-11
Anticipated expiration: 2031-08-26

Abstract

The utility model discloses an RTO heat exchanger, comprising: the wall surface of the shell is provided with a first through hole, a second through hole, a third through hole and a fourth through hole; a heat exchange tube group is further arranged in the shell, one end of the heat exchange tube group is communicated with the first through hole, and the other end of the heat exchange tube group is communicated with the second through hole; the third through hole is communicated with the VOC burning furnace body. It is energy-saving, environment-friendly, simple and efficient.

Description

RTO heat exchanger

Technical Field

The utility model relates to the field of gas treatment, in particular to an RTO heat exchanger.

Background

The raw materials used by various manufacturing plants generally contain Volatile Organic Compounds (VOCs) which can volatilize into organic waste gas in the product process, the organic waste gas generated in the production process of chip manufacturing and sealing and testing plants belongs to the working condition with large air volume and low concentration, and after physical adsorption is carried out through a zeolite concentration rotating wheel, clean gas with large air volume can be discharged to a chimney. And regenerating the adsorbed zeolite rotating wheel by using a small air volume hot air with the temperature of 180-200 ℃, and then feeding the small air volume high-concentration organic waste gas desorbed from the rotating wheel into a Regenerative Thermal Oxidizer (RTO) for high-temperature incineration treatment. The zeolite runner desorbs the hot air needed for regeneration, and the prior art adopts an electric heater to supply heat.

Electric heater heating presents several problems as follows:

the electric power setting power is large, the common electric energy and heat energy conversion efficiency of the electric heater is only 70-75%, the setting power of the electric heater for runner desorption exceeds 180KW and is even larger, the setting power causes large burden of an electric power system in a factory, the large setting power is unrealistic in an electricity limiting area or a factory with insufficient electric power, and the setting cost of the electric power system is increased.

The operation energy consumption is high, and under the condition of the calorific value, the operation cost of the electric heating is 2-3 times higher than that of the natural gas heating (specifically, the energy types and price structures in various regions are seen), and after higher setting cost of the electric power system is paid, high operation electric charge is also borne, which is the most important problem of the electric heater, and the setting and operation cost performance is lower.

The system is complicated, the electric heater needs to strictly monitor the core temperature of the electric heating and the temperature of the process gas, the electric heating pipe is prevented from being damaged by ultra-high temperature, the monitored temperature value is linked with the SCR controller, and the power of the electric heater is adjusted in real time according to the temperature monitored value, so that the complexity of the electric control system is increased, and an operator needs to be familiar with the system enough to smoothly adjust the system.

The service life is shorter, and the insulating material (magnesium oxide powder) is filled in the electric heater, can be along with the ageing cracking gradually of time, and when the temperature control is not good and causes the overtemperature, still can high temperature crystallization lead to insulating inefficacy, and metal, electric heating wire and outer tube also belong to the metal material, have used for a long time also can high temperature oxidation and ageing, and electric heater just needs to be changed in general 2 ~ 3 years, and the electric heater life who often stops is then shorter.

The system adjustability is low, the electric heater must ensure enough cold air to pass through the electric heating pipe, when the cold air volume is insufficient, the heat of the electric heating pipe cannot be smoothly transferred to the cold air, the electric heater generates local high temperature, the electric heater is irreversibly damaged, generally, the electric heater needs to be protected by setting upper and lower limit loads when in use, and therefore, when the system parameters are adjusted or the working condition changes, the adjustability of the electric heater is smaller.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the embodiment of the utility model provides an RTO heat exchanger which is energy-saving, environment-friendly, simple and efficient.

To achieve the above object, an embodiment of the present application discloses an RTO heat exchanger, including:

the wall surface of the shell is provided with a first through hole, a second through hole, a third through hole and a fourth through hole; a heat exchange tube group is further arranged in the shell, one end of the heat exchange tube group is communicated with the first through hole, and the other end of the heat exchange tube group is communicated with the second through hole; the third through hole is communicated with the VOC burning furnace body.

Preferably, a maintenance door is arranged on the shell.

Preferably, the third through hole is communicated with a VOC burner body copper hot pot stainless steel air pipe.

Preferably, the first through hole is communicated with the exhaust air pipe through a stainless steel air pipe.

Preferably, the second through hole is communicated with a zeolite rotating wheel device.

Preferably, the fourth through hole is communicated with the exhaust air pipe through a stainless steel air pipe.

Preferably, the shell is further provided with a lifting point and a channel steel base, the lifting point is provided with a fifth through hole, and the channel steel base is used for fixing the heat exchanger.

Preferably, the inner wall surface of the shell is provided with a heat-insulating layer, and the heat-insulating layer is an aluminum silicate fiber cotton brick with the thickness of 200 mm.

The utility model has the following beneficial effects:

1. energy conservation and environmental protection, and waste heat of waste gas is utilized;

2. the system is simple and efficient, and an additional electric control device is not needed;

3. the service life is long.

In order to make the aforementioned and other objects, features and advantages of the utility model comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, 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 according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of the construction of an RTO heat exchanger in an embodiment of the present invention;

reference numerals of the above figures:

1. a housing; 11. a first through hole; 12. a second through hole; 13. a third through hole; 14. a fourth via hole; 15. a heat exchange tube set; 16. repairing the door; 17. a lifting point; 18. a channel steel base; 19. and (7) an insulating layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature.

To achieve the above objects, the present invention provides an RTO heat exchanger.

In this embodiment, referring to fig. 1, the heat exchanger includes a housing 1, and a first through hole 11, a second through hole 12, a third through hole 13, and a fourth through hole 14 are formed on a wall surface of the housing 1; a heat exchange tube group 15 is further arranged in the shell 1, one end of the heat exchange tube group 15 is communicated with the first through hole 11, and the other end of the heat exchange tube group 15 is communicated with the second through hole 12; and the third through hole 13 is communicated with the VOC burning furnace body.

Further, a maintenance door 16 is provided on the housing 1.

Further, the third through hole 13 is communicated with a VOC burner body copper hot pot stainless steel air pipe.

Further, the first through hole 11 is communicated with a stainless steel air pipe for an exhaust air pipe.

Further, the second through hole 12 is communicated with a zeolite runner device.

Further, the fourth through hole 14 is communicated with the exhaust air duct through a stainless steel air duct.

Further, still be equipped with lifting point 17 and channel-section steel base 18 on the casing 1, be equipped with the fifth through-hole on the lifting point 17, channel-section steel base 18 is used for fixing heat exchanger.

Further, a heat insulation layer 19 is arranged on the inner wall surface of the shell 1, and the heat insulation layer 19 is a 200mm thick aluminum silicate fiber cotton brick.

In the present embodiment, referring to fig. 1, the first through hole 11 and the second through hole 12 are disposed on the upper side of the heat exchanger, the third through hole 13 is disposed on the right side of the heat exchanger, and the fourth through hole 14 is disposed on the left side of the heat exchanger.

The heat exchange tube bank 15 is disposed in the middle of the heat exchanger.

The service door 16 is provided on the right side of the housing 1.

Two lifting points 17 are arranged on both sides of the first through hole 11 and the second through hole 12.

The 4 channel steel bases 18 are arranged at the bottom of the shell 1.

With the above structure, please refer to fig. 1, the heat exchanger is lifted by the lifting point 17, and then the heat exchanger is fixed on the VOC burner body by the channel steel base 18.

The third through hole 13 and the first through hole 11 are opened, cold air enters the heat exchange tube set 15, hot air (waste gas) flows through the outer surface of the heat exchange tube set 15, the hot air and the cold air exchange heat with the heat exchange tube set 15 as a medium, the hot air and the cold air exchange heat with each other, the cold air enters the zeolite rotating wheel equipment through the second through hole 12 after being heated to 180-.

The principle and the implementation mode of the utility model are explained by applying specific embodiments in the utility model, and the description of the embodiments is only used for helping to understand the method and the core idea of the utility model; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

1. An RTO heat exchanger, comprising:

2. The RTO heat exchanger of claim 1, wherein the housing is provided with a service door.

3. The RTO heat exchanger of claim 1, wherein the third through-hole is in communication with a VOC burner copper chafing dish stainless steel air duct.

4. The RTO heat exchanger of claim 1, wherein the first through-hole communicates with the exhaust air duct using a stainless steel duct.

5. The RTO heat exchanger of claim 1, wherein the second through-hole is in communication with a zeolite wheel apparatus.

6. The RTO heat exchanger of claim 1, wherein the fourth through-hole communicates with an exhaust air duct using a stainless steel air duct.

7. An RTO heat exchanger as claimed in claim 1 wherein said housing further includes a lifting point and a channel steel base, said lifting point having a fifth through hole, said channel steel base for securing said heat exchanger.

8. The RTO heat exchanger of claim 1, wherein the shell inner wall surface is provided with an insulation layer, and the insulation layer is 200mm thick alumina silicate fiber cotton bricks.