Asymmetrically-arranged heat exchanger

A heat exchanger, asymmetric technology, applied in indirect heat exchangers, lighting and heating equipment, emission prevention, etc., can solve the problem of high regeneration and replacement costs of desulfurizers, low volatility electrochemical windows, increased desulfurization operating costs, etc. problem, to achieve the effect of stable and economical, fast gas absorption rate, and enhanced dust removal effect

Active Publication Date: 2019-08-27
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Flue gas desulfurization is to reduce flue gas SO 2 One of the effective technologies for emissions, including wet, dry, and semi-dry desulfurization technologies, among which wet desulfurization, especially limestone/gypsum wet desulfurization, is the most widely used, but this method has large water consumption, difficult wastewater treatment, and large investment and other problems, and most of the desulfurization by-product gypsum is idle and stacked, which not only occupies land resources but also causes secondary pollution; while the dry and semi-dry desulfurization processes are simple, but there are high Ca/S ratios, low desulfurization efficiency, desulfurization agent regeneration and replacement Higher costs and other issues, so finding alternative environmentally friendly desulfurizers has become an important issue to be solved urgently
[0005] Ionic liquids are a class of organic molten salts composed of anions and cations that are liquid a

Method used

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Examples

Experimental program
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Example Embodiment

[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 Embodiment

[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 Embodiment

[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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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...

Claims

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Application Information

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IPC IPC(8): F28D21/00F23J15/00F23J15/02F23J15/06
CPCF23J15/006F23J15/02F23J15/06F23J2215/20F28D21/001Y02E20/30
Inventor 崔琳刘立飞董勇徐夕仁
Owner SHANDONG UNIV
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