CN205007598U - A system for anti-fouling and enhanced cleaning applied to evaporators - Google Patents

Abstract

The utility model discloses a be applied to scale deposit prevention and intensive abluent system of evaporimeter is equipped with heat exchanger tube bank including the evaporimeter in the middle part of evaporimeter, is equipped with aeration equipment in the heat exchanger tube bank below. The utility model aims at providing a simple structure can effectively reduce the scaling production when the evaporimeter moves, and the evaporimeter washs convenient, effectual anti-scaling and the abluent system of reinforceing of being applied to the evaporimeter.

Description

A system for anti-fouling and enhanced cleaning applied to evaporators

technical field

The utility model relates to a system for preventing fouling and strengthening cleaning applied to evaporators.

Background technique

Generally, when the evaporator is used to treat waste water with high salt content and high structure rate or evaporate other materials that are prone to fouling, the heat exchange tube in the evaporator is heated by steam, and the waste water is sprayed on the surface of the heat exchange tube for evaporation treatment. After a certain period of continuous evaporation , there will be a lot of insoluble and hard dirt on the surface of the heat exchange tube, and in many cases, it is difficult to clean the scale on the heat exchange surface of the evaporator by relying on chemical cleaning alone. After a long time of operation, many evaporators It is necessary to open the evaporator, manually clean each heat exchange tube, and it is very difficult to clean the scale, and it is not easy to clean the scale completely. It often takes a long time to clean the scale manually, which undoubtedly greatly reduces the efficiency of the evaporator. It also wastes manpower and material resources.

Utility model content

The purpose of this utility model is to overcome the deficiencies in the prior art, to provide a simple structure, which can effectively reduce the generation of fouling when the evaporator is running, the evaporator is easy to clean, and is effectively applied to the anti-fouling and anti-fouling of the evaporator. Enhanced cleaning system;

Another object of the utility model is to provide a process for preventing fouling and strengthening cleaning of the evaporator by using the above system.

In order to achieve the above object, the utility model adopts the following scheme:

A system for anti-fouling and enhanced cleaning applied to evaporators, characterized in that: it includes an evaporator, a heat exchange tube bundle is arranged in the middle of the evaporator, and a heat exchange tube bundle is installed below the heat exchange tube bundle to reduce heat exchange. An aeration device for fouling on the outer wall of the tube bundle or enhancing the cleaning friction of the outer wall of the heat exchange tube bundle.

The above-mentioned aeration device includes an aeration tube, on which a number of aeration holes are arranged, and one end of the aeration tube extends out of the evaporator and is connected with a steam source or an air source.

As above, a steam collecting pipe is provided on the top of the evaporator 1, and the steam collecting pipe is connected with the steam extraction equipment, and a steam storage tank is connected at the outlet end of the steam extraction equipment, and on the gas outlet of the steam storage tank A steam compressor is connected, and the outlet pipe of the steam compressor is connected with the aeration pipe.

A process for anti-fouling and enhanced cleaning applied to evaporators, characterized in that it comprises the following steps:

A. When the evaporator is running, air or steam is input into the aeration tube, so that a large number of bubble groups are generated under the heat exchange tube bundle, and the outer wall of the heat exchange tube bundle is scoured by the tension and blasting force generated by the bubble explosion;

B. When cleaning the evaporator, add cleaning agent to the evaporator, input air or steam into the aeration tube, so that a large number of air bubbles will be generated from the heat exchange tube bundle, and the tension and blasting force generated by the bubble explosion will be used to increase the cleaning agent. The friction between the outer walls of the heat pipe bundle makes the scale flakes detach.

In summary, the utility model has the beneficial effects relative to the prior art as follows:

1. In the utility model, an aeration device is installed at the bottom of the heat exchange tube bundle of the evaporator. When the equipment is running, the steam or air in the aeration device can flush the outer wall of the evaporator, effectively reducing the generation of fouling;

2. When the evaporator in the utility model is being cleaned, the steam or air in the aeration device can enhance the friction between the cleaning agent and the dirt, increase the cleaning efficiency, and reduce the cleaning time and chemical consumption.

Description of drawings

Fig. 1 is the schematic diagram of the utility model;

Fig. 2 is the schematic sectional view of the utility model;

Fig. 3 is a schematic diagram of another implementation method of the present invention.

detailed description

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments:

As shown in Figures 1 to 3, a system for anti-fouling and enhanced cleaning applied to evaporators includes an evaporator 1, and a heat exchange tube bundle 2 is arranged in the middle of the evaporator 1, and the heat exchange tube bundle 2 is provided with an aeration device 3 that can reduce fouling on the outer wall of the heat exchange tube bundle 2 or enhance the cleaning friction of the outer wall of the heat exchange tube bundle 2 .

The aeration device 3 described in the utility model includes an aeration tube 31, on which a number of aeration holes are arranged, and one end of the aeration tube 31 stretches out from the evaporator 1 and is connected with a steam source or Air source connected.

Another embodiment of the present utility model is provided with a steam collecting pipe 4 on the upper part of the evaporator 1, and the steam collecting pipe 4 is connected with a steam extraction device 5, and a steam storage device is connected to the outlet end of the steam extraction device 5. Tank 6 , a steam compressor 7 is connected to the gas outlet of the steam storage tank 6 , and the gas outlet pipe of the steam compressor 7 is connected to an aeration pipe 31 .

A process for anti-fouling and enhanced cleaning applied to evaporators, characterized in that it comprises the following steps:

A. When the evaporator 1 is running, air or steam is input into the aeration tube 31, so that the heat exchange tube bundle 2 is lowered to generate a large number of bubble groups, and the outer wall of the heat exchange tube bundle 2 is scoured by the tension and blasting force generated by the bubble explosion;

B. When cleaning the evaporator, add cleaning agents to the evaporator 1, and input air or steam into the aeration tube 31, so that the heat exchange tube bundle 2 is lowered to generate a large number of bubble groups, and the tension and blasting force generated by the bubble explosion are used to increase the cleaning The friction between the medicament and the outer wall of the heat exchange tube bundle 2 makes the scale flakes break away.

The utility model installs an air pipe 31 at the bottom of the heat exchange tube bundle of the evaporator, and performs air cleaning by steam or air when the equipment is in operation or when the equipment is cleaned. Because the tube bundles in the evaporator body are soaked by liquid, the aeration flushing tube contains many pores, which can form a large number of air bubble groups, and the bubble groups continuously wash the soaked heat exchange tube bundles. Due to the certain tension and blasting force generated by the bubble explosion, the heat exchange tube bundles can be effectively The fouling on the surface is washed away, but because it is immersed in the environment, the surface of the heat exchange tube bundle will not be damaged by the explosion of bubbles.

When the equipment is running, steam can also be used to blow air. The steam contacts and collides with the surface of the heat exchange tube during the rising process, which increases the turbulent movement of the evaporated material on the heat exchange surface and reduces the deposition of easily scaling substances on the heat exchange surface. The possibility of fouling delays the fouling of the evaporator. At the same time, because the steam rises and improves the turbulent flow of the material on the heat exchange surface, it also strengthens the heat transfer of the evaporator, and the heat transfer efficiency of the evaporator is greatly improved. .

When the evaporator of the utility model is chemically cleaned, the air is flushed by air, and the air contacts and rubs with the surface of the heat exchange tube during the rising process, which increases the contact between the cleaning agent and the scale sheet, accelerates the reaction between the cleaning agent and the scale sheet, and at the same time the air Collision and friction can also make most scales fall off, which increases cleaning efficiency and reduces cleaning time and chemical consumption.

The basic principles and main features of the utility model and the advantages of the utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (3)

1. A system for antifouling and enhanced cleaning applied to evaporators, characterized in that: an evaporator (1) is included, and a heat exchange tube bundle (2) is provided in the middle of the evaporator (1). An aeration device (3) that can reduce fouling on the outer wall of the heat exchange tube bundle (2) or enhance cleaning friction on the outer wall of the heat exchange tube bundle (2) is provided below the heat exchange tube bundle (2). 2. A system for anti-fouling and enhanced cleaning applied to evaporators according to claim 1, characterized in that said aeration device (3) includes an aeration tube (31), and in said aeration The air pipe (31) is provided with a number of aeration holes, and one end of the aeration pipe (31) extends out of the evaporator (1) and is connected with a steam source or an air source. 3. A system for anti-fouling and enhanced cleaning applied to evaporators according to claim 2, characterized in that a steam collecting pipe (4) is arranged on the top of the evaporator (1), and the steam collecting The pipe (4) is connected with the steam extraction device (5), the steam storage tank (6) is connected at the outlet of the steam extraction device (5), and the steam storage tank (6) is connected with a steam storage tank (6) at the gas outlet A compressor (7), the outlet pipe of the steam compressor (7) is connected with the aeration pipe (31).