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Waste heat recovering method and device of evaporation condensed water

A waste heat recovery device, evaporation and condensation technology, applied in the direction of multi-effect evaporation, etc., can solve the problem that the heat energy of condensed water cannot be fully utilized

Inactive Publication Date: 2010-03-17
开曼铝业(三门峡)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the defects and deficiencies in the prior art, the purpose of the present invention is to propose a method and device for recovering waste heat of evaporative condensed water, so as to solve the problem in the prior art that the heat energy of the condensed water in the effective condensed water tank cannot be fully utilized

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  • Waste heat recovering method and device of evaporation condensed water
  • Waste heat recovering method and device of evaporation condensed water

Examples

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Embodiment 1

[0028] This example specifically describes the specific implementation of the operation of four groups of alumina evaporation units in the technical solution of the present invention.

[0029] Such as figure 2 As shown, connect the first, second, and third effect condensate tanks to the second, third, and fourth effect heating chambers respectively to evaporate the secondary steam, and heat the second, third, and fourth effect raw liquids so that the first , Second, third and fourth effect condensed water heat can be fully recycled and utilized. Due to the lower temperature, the fourth effect condensed water is directly sent to the hot water tank for other water replenishment.

[0030] The technical solution described in this embodiment uses the secondary steam of the condensed water in this effect to heat the next effect, so that a large amount of heat carried by the high-temperature condensed water can be further recycled.

[0031] During the experiment, the applicant fou...

Embodiment 2

[0033] Such as figure 2 As shown, this embodiment specifically describes a method for recovering waste heat from evaporative condensed water, including the following steps:

[0034] Step 1. After the first-effect heater 1 steam heats the evaporated stock solution, the condensed water enters the first-effect condensed water tank 5;

[0035] Step 2. The first-effect condensed water tank 5 is connected to the second-effect heating chamber 2, and the secondary steam released from the first-effect condensed water enters the second-effect heating chamber 2 to heat the second-effect raw liquid.

[0036] Step 3. After the second-effect raw liquid is heated, the second-effect condensed water enters the second-effect condensed water tank 6;

[0037] Step 4. The second-effect condensed water tank 6 is connected to the third-effect heating chamber 3, and the secondary steam released from the second-effect condensed water enters the third-effect heating chamber 3 to heat the third-effect...

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Abstract

The invention provides a waste heat recovering method and a device of evaporation condensed water, relating to the technical field of industrial evaporation, and aiming at solving the problem that theheat energy of the condensed water in a current-effect condensed water tank can not be efficiently utilized. The method comprises the following steps: after the evaporation stock solution is heated by a first-effect heating chamber, the condensed water after evaporation heating enters a first-effect condensed water tank; the first-effect condensed water tank is connected with a second-effect heating chamber; the first-effect condensed water enters the second-effect heating chamber through the first-effect condensed water tank; and the second-effect stock solution is heated by the released secondary steam; in addition, the invention also provides a waste heat recovering device of evaporation condensed water, wherein, a previous-effect heating chamber and a next-effect heating chamber are connected through the condensed water tank which is used for switching the condensed water of the previous-effect heating chamber into the next-effect heating chamber and heating the next-effect evaporation stock solution. In the technical scheme of the invention, the current-effect condensed water secondary steam is used for heating the next-effect, thus ensuring that a large amount of heat energycarried by the high temperature condensed water can be further recycled.

Description

technical field [0001] The invention relates to the technical field of industrial evaporation, and specifically proposes a method and a device for recovering waste heat of evaporated condensed water. Background technique [0002] In the current field of industrial evaporation and condensation technology, the alumina evaporation unit is generally divided into the first, second, third, and fourth-effect heating chambers, and the evaporation raw liquid enters from the fourth-effect heating chamber, along the sequence of four-three-two-one effect The steam is fed in order to evaporate, in which the first effect uses new steam for heating, the second effect uses the first effect of secondary steam for heating, the third effect uses the second effect of secondary steam for heating, and the fourth effect uses the third effect of second Secondary steam heating, such as figure 1 shown. The first, second, third, and fourth effects are all equipped with condensate tanks. The condense...

Claims

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Application Information

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IPC IPC(8): B01D1/26
CPCY02P70/10
Inventor 冯雨田年伟唐希英
Owner 开曼铝业(三门峡)有限公司