CN201443989U

CN201443989U - Cooling tower vapor recycling system

Info

Publication number: CN201443989U
Application number: CN200920000892XU
Authority: CN
Inventors: 高清; 左余宝
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-01-14
Filing date: 2009-01-14
Publication date: 2010-04-28
Anticipated expiration: 2019-01-14

Abstract

The utility model discloses a cooling tower vapor recycling system, which aims at providing a system capable of reasonably reducing freshwater resource waste by means of liquefying and recycling overflowing waste hot vapors inside a cooling tower and storing the vapors inside a reservoir for other uses. The system employs the scheme including that a vapor collecting cover is disposed on the top portion of the cooling tower, the vapors are led into a spray tower via a spiral exhaust fan, and the vapors are collected in a water accumulation pipeline and then flow into the reservoir for other uses after being liquefied inside the spray tower.

Description

The cooling tower Steam Recovery is utilized system

Technical field

The utility model relates to a kind of industrial cooling tower water-saving system, especially a kind ofly the cooling tower Steam Recovery that the waste hot steam that overflows in the cooling tower is recycled can be utilized system.

Background technology

China's gross amount of water resources is not very few, and per capita water resources quantity is very poor, has only 1/4 (about 2700 cubic metres of the per capita surface water resources of China occupies the 88th in the world) of people from world average.By per capita water resources quantity relatively, Canada is that 16 times, Indonesia are that 9 times, the former Soviet Union are that 7 times, the U.S. are 5 times, and are lower than countries such as Japan, Mexico, France, Former Yugoslavia, Australia for 48 times of China, Brazil.Because the water resource imbalance between supply and demand is becoming increasingly acute, and has produced many adverse influences.At first be very big to industrial and agricultural production influence, for example 1981, the Daliang City was owing to cause damage 600,000,000 yuan of industrial output values of lack of water.In 1,500,000,000 mu of arable lands of China, 8.3 hundred million mu of punjas that do not have irrigating facility are still arranged, other has 1,400,000,000 mu lack of water grassland.The whole nation has 300,000,000 mu of farmlands to suffer from drought every year.Still there are 4,000 ten thousand populations and 3,000 ten thousand livestock dysdipsias in the farming and pastoral area, northwest.Secondly people life and work are brought inconvenience, some city is to the building insufficient water or often cut off the water supply, and the lack of water city that has has to take regularly, limitation water-feeding, causes the people's lives difficulty.Its three, Underground Water Excess Exploitation causes that level of ground water continue to descend, the water resource exhaustion has 24 cities Trend of Groundwater Descent Funnel to occur in 27 main cities.

Therefore using water wisely, reasonably using water resource is our each national obligation, the equipment of making great efforts to develop water saving or recycle-water resource also is we each its people's dream.

Cooling tower is the energy, power, and the important heat and mass equipment in field such as chemical industry, and its effect is the used heat of discharging the technological process of production, carries out heat and mass transfer process by making recirculated cooling water in tower, and the temperature of recirculated cooling water is reduced.Recirculated water to conduct heat and the evaporation dual mode carries out heat exchange with air, conducts heat promptly directly with the heat transferred air of recirculated water in cooling tower, makes its temperature rising, becomes the sensible heat transfer mode; And evaporation is to airborne evaporation air humidity to be increased by recirculated water, is called the latent heat transfer mode.Because the temperature of air in cooling tower raises, and vapo(u)rous pressure increases with its increase in temperature, and the cooling tower outlet is saturated moist air, therefore to account for the share that total amount of heat transmits quite big for latent heat, large-scale for thermal power plant from the thermal cycle cooling tower, winter, latent heat accounted for about 50%, and summer, latent heat then accounted for more than 70%.This heat exchange mode has caused a large amount of evaporated water losses.With the water consumption rich and influential family---thermoelectricity enterprise is an example, the cooling tower of the general conventional humid-cool system that adopts is discharged large quantity of moisture by evaporation to environment in cooling circulating water at present, with the 300MW unit is example, and the fresh water amount that annual cooling tower consumes is about 5,000,000 tons.

Summary of the invention

Cooling tower water resource in the cooling circulating water process runs off seriously in the steam mode in order to solve in the past, the deficiency of a large amount of waste water resources, and the utility model provides a kind of can reasonably flow out to cooling tower Steam Recovery next in the air, realizes the system that utilizes again.

The utility model is achieved through the following technical solutions, and fixes an infundibulate vapour collect cover by support above the opening of cooling tower upper end, is provided with Spiral fan in the vapour collect cover, and Spiral fan adopts the pull mode to be installed in the vapour collect cover, so that later maintenance.The upper end of vapour collect cover connects spray column by pipeline, the pipeline that is connected between vapour collect cover and the spray column is equipped with a Spiral fan every a segment distance, be thorough condensed steam, 3-5 spray column tandem compound can be used, shower nozzle in a plurality of spray columns reduces from the front end to the rear end successively, the spray column bottom is provided with the pipeline that catchments, and the pipeline that catchments connects cistern.Its workflow is, the waste hot steam that overflows in the cooling tower collects in the vapour collect cover place, under the effect of the built-in Spiral fan of vapour collect cover, steam enters in the gas pipeline, be similar to the operation principle of smoke exhaust ventilator, steam is under the effect of gas pipeline inside spin blower fan then, flow in the spray column, waste hot steam is condensation rapidly in spray column, aqueous water is catchmenting pipeline internal exchange collection and flowing in the cistern, Ye Hua waste hot steam is not by entering condensation in the next spray column communicating pipe, process in its process and first spray column is identical, and the number of spray column can be set according to actual conditions, guarantees that finally all steam can liquefy fully, steam liquefaction back flow in the cistern by the pipeline that catchments, and just can be used for other purposes in cistern after the precipitation process.

The beneficial effects of the utility model are: avoided the waste hot steam in the cooling tower to run off, steam liquefaction is reclaimed and is stored in the cistern, just can be used for Industrial Boiler water, resident living bathing, warming hot water, winter agricultural greenhouse water etc., freshwater resources have reasonably been recycled, the fundamental realities of the country that meets China's using water wisely and adhere to sustainable development.

Description of drawings

Fig. 1 is a fundamental diagram of the present utility model.

Fig. 2 is the upward view of vapour collect cover.

Fig. 3 is the horizontal sectional drawing at spray column middle part.

Among the figure, 1, spray column a, 2, spray column b, 3, spray column c, 4, communicating pipe, 5, cistern, 6, the pipeline that catchments, 7, cooling tower, 8, support, 9, Spiral fan, 10, vapour collect cover, 11, gas pipeline, 12, the minor spiral blower fan, 13 shower nozzles.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is further described.

Referring to Fig. 1, Fig. 2, vapour collect cover 10 is fixed on the top of cooling tower 7 openings by support 8, vapour collect cover 10 built-in four Spiral fans 9, the upper end of vapour collect cover 10 connects underground spray column a1 by gas pipeline 11, spray column a1 links to each other with spray column b2 communicating pipe 4 by the bottom, adopt in the same way, spray column b2 connects spray column c3, the bottom of three spray columns is provided with a pipeline 6 that catchments that communicates, the pipeline 6 that catchments passes to cistern 5, is provided with a minor spiral blower fan 12 every a segment distance in gas pipeline 11.

Referring to Fig. 2, vapour collect cover 10 built-in Spiral fans 9 adopt the pull mode to be installed on the vapour collect cover 10, so that the maintenance in later stage.

Referring to Fig. 3, be provided with some shower nozzles 13 in the spray column, shower nozzle 13 cold water of ejection continuously contacts with steam, steam is liquefied fast and collect in the bottom the pipeline 6 that catchments in, because just the vapour density of input is big, so it is more that the shower nozzle in the spray column a1 distributes, take second place in the spray column b2, minimum in the spray column c3.

Concrete workflow is, the waste hot steam that overflows in the cooling tower 7 compiles at vapour collect cover 10 places, under the effect of Spiral fan 9, enter in the gas pipeline 11, and flow in the spray column a1 under the effect successively of the minor spiral blower fan 12 in gas pipeline 11, be liquefaction rapidly in the contact of cold water, be pooled in the pipeline 6 that catchments, uncooled steam under the effect of air pressure by entering spray column b2 inside communicating pipe 4, its process is identical with process in spray column a1, the liquefaction fully in spray column c3 of in like manner last steam, water after the liquefaction flow in the cistern 5 by the pipeline 6 that catchments of bottom, just can be used for other purposes through after the precipitation process.

Claims

1. cooling tower waste hot steam recycling system, mainly form by collection vapour system and condenser system, it is characterized in that: above the opening of cooling tower upper end, fix an infundibulate vapour collect cover by support, be provided with Spiral fan in the vapour collect cover, Spiral fan adopts the pull mode to be installed in the vapour collect cover, and the upper end of vapour collect cover connects spray column by pipeline, and the pipeline that is connected between vapour collect cover and the spray column is provided with Spiral fan, the spray column bottom is provided with the pipeline that catchments, and the pipeline that catchments connects cistern.

2. a kind of cooling tower waste hot steam recycling system according to claim 1 is characterized in that 3-5 spray column tandem compound used, and the shower nozzle quantity in a plurality of spray columns reduces from the front end to the rear end successively.