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Water-saving system and water-saving process thereof used in wet desulfurization process

A technology of wet desulfurization and water-saving system, which is applied in separation methods, chemical instruments and methods, and separation of dispersed particles, etc., to achieve recycling, significant environmental protection effects, and simple settings

Active Publication Date: 2012-10-10
BEIJING ZHONGNENG NUOTAI ENERGY SAVING & ENVIRONMENTAL PROTECTION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a water-saving system for wet desulfurization process and its water-saving process to solve the problem of water recovery in the clean flue gas, thereby reducing the loss of water resources, in view of the problems existing in the prior art. This in turn facilitates the recycling of energy

Method used

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  • Water-saving system and water-saving process thereof used in wet desulfurization process
  • Water-saving system and water-saving process thereof used in wet desulfurization process
  • Water-saving system and water-saving process thereof used in wet desulfurization process

Examples

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Embodiment 1

[0031] Such as figure 1 As shown, the water-saving system for the wet desulfurization process includes an absorption tower 1, a chimney 5, a clean flue 2, a plurality of heat pipes 3 arranged in sequence along the flue gas flow direction on the flue wall of the clean flue 1, and Storage device 4; wherein, the storage device 4 is arranged at the end of the clean flue 2; each heat pipe 3 is evenly distributed in the clean flue 2 and arranged obliquely, the downwardly inclined part is in the clean flue 2, and the upwardly inclined part is in the clean flue Clean flue 2 outside;

[0032] Such as figure 2 As shown, the heat pipe 3 includes a shell 301 and fins 302 arranged on the shell 301 , the fins 302 can increase the contact area accordingly, which is beneficial to improve the recovery efficiency.

[0033] In the above-described embodiment, each heat pipe 3 is not provided with fins 302 on the housing 301 in the clean flue 2, so as to prevent the dust and dirt inside the cle...

Embodiment 2

[0045] Such as figure 1 and figure 2 As shown, the setting and distribution of a water-saving system for wet desulfurization process are the same as in Example 1, except for the following settings: the specification of the clean flue 2 is 5m×6m, the diameter of the heat pipe 3 is 100mm, and the fins 302 The spacing of the heat pipes 3 is 2.5mm, the length of the heat pipes 3 in the clean flue 2 is 1.50m, and the distribution distance of the heat pipes 3 on the clean flue 2 is 400mm.

[0046] Applying the water-saving system of the present invention for wet desulfurization process to carry out the water-saving process of cleaning flue gas is the same as embodiment 1, except the following steps:

[0047] In step (1), the vacuum pressure inside the heat pipe 3 is 1×10 -4 Pa;

[0048] In step (2), the temperature of the net flue gas exiting the absorption tower 1 is 55°C, and the flue gas volume is 1.2×10 6 N m 3 / h, the ambient temperature is 5°C, the partial pressure of wa...

Embodiment 3

[0051] Such as figure 1 and figure 2 As shown, the setting and distribution of a water-saving system for wet desulfurization process are the same as in Example 1, except for the following settings: the specification of the clean flue 2 is 5m×6m, the diameter of the heat pipe 3 is 120mm, and the fins are 302 The spacing of the heat pipes 3 is 4mm, the length of the heat pipes 3 in the clean flue 2 is 2.5m, and the distribution distance of the heat pipes 3 on the clean flue 2 is 400mm.

[0052] Applying the water-saving system of the present invention for wet desulfurization process to carry out the water-saving process of cleaning flue gas is the same as embodiment 1, except the following steps:

[0053] In step (1), the vacuum pressure inside the heat pipe 3 is 10Pa;

[0054] In step (2), the temperature of the net flue gas exiting the absorption tower 1 is 60°C, and the flue gas volume is 1.5×10 6 N m 3 / h, the ambient temperature is 15°C, the partial pressure of water v...

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Abstract

The invention relates to a water-saving system and a water-saving process thereof, in particular to a water-saving system and a water-saving process thereof used in a wet desulfurization process. The water-saving system comprises a clean flue, and a plurality of heat pipes and a storage device which are sequentially arranged on a flue wall of the clean flue in a flue gas flow direction. The water-saving process is implemented through the water-saving system, and clean flue gas exchanges heat and is cooled by utilizing the heat pipes. Compared with the prior art, the water-saving system and the water-saving process have the advantages that the recycling problem of water resources carried by the clean flue gas is effectively solved, the arrangement of the system is simple and optimized, the process is convenient to operate, energy resources are fully recycled, a large amount of water resources is saved, and a remarkable environmental protection effect is achieved. Therefore, the water-saving system and the water-saving process are suitable for being popularized in and applied to various wet flue gas purification fields.

Description

technical field [0001] The invention relates to a water-saving system and a water-saving process thereof, in particular to a water-saving system and a water-saving process for a wet desulfurization process. Background technique [0002] At present, with the maturity of the wet desulfurization process, its application is becoming more and more extensive, such as limestone desulfurization, ammonia desulfurization, double alkali desulfurization, magnesium desulfurization, etc. However, in the application process of various wet desulfurization processes, there is a common problem of large water consumption. Taking two 300MW generator sets as an example, the water consumption is generally Between 85~120t / h. Among them, in various wet desulfurization processes, the saturated water vapor carried in the discharged net flue gas basically accounts for more than 90% of the total water consumption. The clean flue gas containing a large amount of saturated water vapor is vented through...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/78B01D53/48
Inventor 艾淑艳
Owner BEIJING ZHONGNENG NUOTAI ENERGY SAVING & ENVIRONMENTAL PROTECTION CO LTD
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