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Multi-effect heat exchange humidification-dehumidification tower wastewater recovery process and system
The invention relates to a multi-effect heat exchange humidification-dehumidification tower wastewater recovery process and system, wherein the process comprises the following steps: a high-specific-surface-area hydrophilic filler is loaded into a humidification tower and a dehumidification tower, heat exchange and temperature rise are ca on salt-containing wastewater, 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 makes contact with the salt-containing wastewater and the high-specific-surface-area hydrophilic filler in a cross-flow mode in the humidifying tower for humidifying, isothermal steam phase change and cooling are conducted, moisture in the hot flue gas is recycled, recycled water is obtained, and the recycled water is cooled; and the cooled recycled water is sprayed into the dehumidification tower from the top of the dehumidification tower, the hot flue gas is in cross-flow contact with the cooled recycled water and the high-specific-surface-area hydrophilic filler in the dehumidification tower, cooling and dehumidification are conducted, recycled water and flue gas are obtained. 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 belongs to the technical field of wastewater recycling and reusing.
一种多效换热的增湿‑除湿塔废水回收工艺及系统，包括以下步骤：在增湿塔内部和除湿塔内部装入高比表面积亲水填料，将含盐废水换热升温后从增湿塔的顶部向增湿塔的内部喷淋；将热烟气从增湿塔的侧面注入，热烟气与含盐废水及高比表面积亲水填料在增湿塔内部十字错流接触增湿，进行等温水蒸气相变和冷却回收热烟气中的水分，得到回收水，对回收水进行冷却；将冷却后的回收水从除湿塔的顶部向除湿塔的内部喷淋，热烟气与冷却后的回收水及高比表面积亲水填料在除湿塔内部错流接触，进行降温和除湿，得到回收水和烟气，解决了传统的废水回收方法存在着因回收工艺复杂和回收能耗较高，从而导致回收效率较低的技术问题，属于废水回收再利用技术领域。
Multi-effect heat exchange humidification-dehumidification tower wastewater recovery process and system
The invention relates to a multi-effect heat exchange humidification-dehumidification tower wastewater recovery process and system, wherein the process comprises the following steps: a high-specific-surface-area hydrophilic filler is loaded into a humidification tower and a dehumidification tower, heat exchange and temperature rise are ca on salt-containing wastewater, 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 makes contact with the salt-containing wastewater and the high-specific-surface-area hydrophilic filler in a cross-flow mode in the humidifying tower for humidifying, isothermal steam phase change and cooling are conducted, moisture in the hot flue gas is recycled, recycled water is obtained, and the recycled water is cooled; and the cooled recycled water is sprayed into the dehumidification tower from the top of the dehumidification tower, the hot flue gas is in cross-flow contact with the cooled recycled water and the high-specific-surface-area hydrophilic filler in the dehumidification tower, cooling and dehumidification are conducted, recycled water and flue gas are obtained. 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 belongs to the technical field of wastewater recycling and reusing.
一种多效换热的增湿‑除湿塔废水回收工艺及系统，包括以下步骤：在增湿塔内部和除湿塔内部装入高比表面积亲水填料，将含盐废水换热升温后从增湿塔的顶部向增湿塔的内部喷淋；将热烟气从增湿塔的侧面注入，热烟气与含盐废水及高比表面积亲水填料在增湿塔内部十字错流接触增湿，进行等温水蒸气相变和冷却回收热烟气中的水分，得到回收水，对回收水进行冷却；将冷却后的回收水从除湿塔的顶部向除湿塔的内部喷淋，热烟气与冷却后的回收水及高比表面积亲水填料在除湿塔内部错流接触，进行降温和除湿，得到回收水和烟气，解决了传统的废水回收方法存在着因回收工艺复杂和回收能耗较高，从而导致回收效率较低的技术问题，属于废水回收再利用技术领域。
Multi-effect heat exchange humidification-dehumidification tower wastewater recovery process and system
一种多效换热的增湿-除湿塔废水回收工艺及系统
LIU CHANGBAO (author) / LI DONG (author) / LI CHUNHU (author)
2021-09-28
Patent
Electronic Resource
Chinese
IPC:
B01D
SEPARATION
,
Trennen
/
C02F
Behandlung von Wasser, Schmutzwasser, Abwasser oder von Abwasserschlamm
,
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
/
E03B
Anlagen oder Verfahren zum Gewinnen, Sammeln oder Verteilen von Wasser
,
INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
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