Wastewater recovery process and system based on hot flue gas and adsorbent
A waste water recovery and hot flue gas technology, which is applied in the direction of heating water/sewage treatment, gas treatment, water supply equipment, etc., can solve the problems of low recovery efficiency, high recovery energy consumption, complex recovery process, etc., to achieve improved recovery rate, transmission Quality and heat transfer fast, the effect of reducing manufacturing costs
Pending Publication Date: 2021-09-28
威海金宏科技有限公司
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[0006] The purpose of this application is to provide a waste water recovery process and system based on hot flue gas and adsorbent, aiming to solve the problem of low recovery efficiency due to the complex recovery process and high recovery energy consumption in traditional waste water recovery methods technical problem
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[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.
[0026] The traditional humidification-dehumidification type saline wastewater recovery process usually uses random packing, metal or ceramic structured packing; generally speaking, these structured packings have a maximum specific surface area of no more than 700m 2 / m 3 , and do not intentionally modify the surface to be hydrophilic; according to the mass transfer theory, Q=k d a(C 0 -C t ), that is, in the concentration difference (C 0 -C t ) under certain circumstances, the mass transfer rate and mass transfer coefficient k d It ...
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Abstract
The invention discloses a wastewater recovery process and system based on hot flue gas and an adsorbent. The wastewater recovery process comprises the following steps that: a high-specific-surface-area hydrophilic filler is loaded into a humidifying tower, the adsorbent is loaded into a dehumidifying tower, a rotary dehumidifying wheel is arranged at the bottom in the dehumidifying tower, and salt-containing wastewater is sprayed from the top of the humidifying tower to the inside of the humidifying tower after heat exchange and temperature rise; hot flue gas is injected from the side face of the humidifying tower, the hot flue gas, the salt-containing wastewater and the high-specific-surface-area hydrophilic filler are in cross-flow contact in the humidifying tower for humidifying, isothermal steam phase change and cooling are conducted, moisture in the hot flue gas is recycled, and recycled water is obtained; and the hot flue gas is in contact with the adsorbent in the dehumidifying tower, the adsorbent absorbs water vapor in the hot flue gas, and the adsorbent is absorbed-extruded by the rotary dehumidifying wheel to obtain recycled water. Therefore, the technical problem of low recycling efficiency caused by complex recycling process and high recycling energy consumption in a traditional wastewater recycling method is solved; and the invention relates to the technical field of wastewater recycling.
Description
technical field [0001] The present application relates to the technical field of waste water recovery and reuse, in particular to a waste water recovery process and system based on hot flue gas and adsorbent. Background technique [0002] Water is one of the most important natural resources on the earth and an indispensable resource in people's life and production. Water resources are an important element to promote the sustainable development of the entire social economy and the progress of industrial civilization. Unfortunately, however, The groundwater and fresh water directly used by human beings is less than 0.36% of the total. China’s total water resources are 2.8 trillion cubic meters, ranking sixth in the world, but the per capita water resources are only 25% of the world’s average level. , is listed by the United Nations as one of the 13 countries with the poorest water in the world. According to internationally recognized standards, a per capita water resource of l...
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IPC IPC(8): B01D53/26B01D53/06B01D53/00C02F1/02B01F3/04E03B3/28
CPCB01D53/261B01D53/06B01D53/002C02F1/02E03B3/28B01D2257/80B01D2253/306B01D2253/10B01D2258/0283
Inventor 刘昌豹李栋李春虎
Owner 威海金宏科技有限公司