Asymmetrically-arranged heat exchanger

Abstract

The invention provides an asymmetrically-arranged heat exchanger. The heat exchanger comprises a collecting pipe, left coil pipes and right coil pipes are distributed on the left side and the right side of the collecting pipe respectively; the heat exchanger is characterized in that the left coil pipes and the right coil pipes are arranged at intervals, one right coil pipe is arranged between every two adjacent left coil pipes, and one left coil pipe is arranged between every two adjacent right coil pipes. The heat exchanger can be used for carrying out reinforcing heat exchange and soot removal at different heights, and the effects of reinforcing heat exchange and removing accumulated dust are achieved.

Description

technical field

[0001] The invention belongs to the technical fields of heat exchange technology and flue gas desulfurization, and in particular relates to an asymmetrically arranged heat exchanger and a flue gas waste heat utilization system thereof. Background technique

[0002] my country is the world's largest coal producer and consumer. Coal-fired power plants consume a lot of coal to provide steam and electricity, but also emit a lot of waste heat. Flue gas waste heat recovery generally adopts shell-and-tube heat exchangers, so the enhanced heat transfer technology of heat exchangers is of great significance to energy saving and consumption reduction. Among them, passive enhanced heat transfer technology has become an important research direction because it does not require external high-quality energy input to achieve the purpose of enhanced heat transfer.

[0003] The use of fluid-induced vibration of heat transfer elements to achieve enhanced heat transfer is a for...

Examples

example 1

[0054] Example 1: The ionic liquid used was synthesized under the action of microwaves. The ratio of triethanolamine and acetic acid was 1.2:1. After synthesis, activated carbon or silica gel was used for loading by impregnation. The loading ratio was 0.75:1, and then the ionic liquid was realized by evaporation and drying. load;

example 2

[0055] Example 2: The ionic liquid used was synthesized under the action of microwaves, the ratio of triethanolamine and acetic acid was 1.2:1, and after synthesis, 80-120 mesh activated carbon was used for loading by impregnation. The load ratio is 0.75:1, accurately weigh 7.5g of ionic liquid and dissolve it in 30ml of absolute ethanol, put 10g of 80-100 mesh activated carbon into it, keep stirring and gradually raise the temperature to 90°C, when most of the solvent is evaporated , put the loaded activated carbon into a drying oven at 50°C and dry until particles appear.

[0056] Take 2g of loaded activated carbon and place it in the reactor, pass through the simulated flue gas, and carry out the adsorption experiment at 40°C, and the loaded activated carbon is penetrated for about 7 hours.

example 3

[0057] Example 3: The ionic liquid used was synthesized under the action of microwaves, the ratio of triethanolamine and acetic acid was 1.2:1, and after synthesis, 60-80 mesh was used for loading by impregnation. The loading ratio is 0.75:1. Accurately weigh 7.5g of ionic liquid and dissolve it in 30ml of absolute ethanol. Put 10g of activated carbon into it, stir continuously and gradually raise the temperature to 90°C. When most of the solvent is evaporated, put the loaded The silica gel was dried in a drying oven at 50°C until particles appeared.

[0058] Take 2g of loaded activated carbon and place it in the reactor, pass through the simulated flue gas, and conduct the adsorption experiment at 40°C. The adsorption is complete in about 1.5h.

technical field

[0001] The invention belongs to the technical fields of heat exchange technology and flue gas desulfurization, and in particular relates to an asymmetrically arranged heat exchanger and a flue gas waste heat utilization system thereof. Background technique

[0002] my country is the world's largest coal producer and consumer. Coal-fired power plants consume a lot of coal to provide steam and electricity, but also emit a lot of waste heat. Flue gas waste heat recovery generally adopts shell-and-tube heat exchangers, so the enhanced heat transfer technology of heat exchangers is of great significance to energy saving and consumption reduction. Among them, passive enhanced heat transfer technology has become an important research direction because it does not require external high-quality energy input to achieve the purpose of enhanced heat transfer.

[0003] The use of fluid-induced vibration of heat transfer elements to achieve enhanced heat transfer is a for...

Examples

example 1

[0054] Example 1: The ionic liquid used was synthesized under the action of microwaves. The ratio of triethanolamine and acetic acid was 1.2:1. After synthesis, activated carbon or silica gel was used for loading by impregnation. The loading ratio was 0.75:1, and then the ionic liquid was realized by evaporation and drying. load;

example 2

[0055] Example 2: The ionic liquid used was synthesized under the action of microwaves, the ratio of triethanolamine and acetic acid was 1.2:1, and after synthesis, 80-120 mesh activated carbon was used for loading by impregnation. The load ratio is 0.75:1, accurately weigh 7.5g of ionic liquid and dissolve it in 30ml of absolute ethanol, put 10g of 80-100 mesh activated carbon into it, keep stirring and gradually raise the temperature to 90°C, when most of the solvent is evaporated , put the loaded activated carbon into a drying oven at 50°C and dry until particles appear.

[0056] Take 2g of loaded activated carbon and place it in the reactor, pass through the simulated flue gas, and carry out the adsorption experiment at 40°C, and the loaded activated carbon is penetrated for about 7 hours.

example 3

[0057] Example 3: The ionic liquid used was synthesized under the action of microwaves, the ratio of triethanolamine and acetic acid was 1.2:1, and after synthesis, 60-80 mesh was used for loading by impregnation. The loading ratio is 0.75:1. Accurately weigh 7.5g of ionic liquid and dissolve it in 30ml of absolute ethanol. Put 10g of activated carbon into it, stir continuously and gradually raise the temperature to 90°C. When most of the solvent is evaporated, put the loaded The silica gel was dried in a drying oven at 50°C until particles appeared.

[0058] Take 2g of loaded activated carbon and place it in the reactor, pass through the simulated flue gas, and conduct the adsorption experiment at 40°C. The adsorption is complete in about 1.5h.

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