DE202017005283U1 - Quench cooler - Google Patents

Abstract

Quench cooler, in which a heat exchange medium is water and the other heat exchange means is a gas, wherein (n) wall divider (4) in a housing (2) in the flow direction of the heat exchange medium water and (n + 1) trays (3) for the distribution of the gaseous heat exchange medium are arranged.

Description

It is known to use for the industrial cooling of water at 1 ° C for snowmaking and water above 50 ° C in plastics processing cooling towers and Rieselwäscher. (Cooltech) In such heat exchangers, however, further measures are necessary to avoid damage from temperatures above 50 ° C and damage caused by freezing on internals (packages) and to improve the mixing of the heat transfer medium air and water within the cross-flowed internals and at the use of a uniform cooling to allow.

It is also known to dissipate excess heat from refrigeration systems and material flows in the steam process and during drying with steam through an atmospheric heat exchanger with the heat exchange means air and water in the heat dissipation in industrial production and heat and cooling in cycle processes. It is, however, necessary to select the technology from the large number of heat exchangers in order to condense a steam from the steam network and the steam generated during the drying of sewage sludge without damage to the climate and the environment. ( DE 29 43 528 C2 )

Furthermore, it is known from a highly efficient chiller, cold water environmentally friendly with water and to generate a dependent on the COP value energy efficiency. (iKU 2017, Newsroom, Success Stories, eChiller) In order to dissipate in particular the heat in the plastics processing for water cooling from 50 ° C to 22 ° C in the eChiller on site, and to allow a limitation of the environmental impact and the power requirements, further known thermal engineering measures and efficiency, measured by environmental impact, as environmental efficiency.

It is also known, through efficient ways of producing chilled water, to connect a refrigerant evaporator to 4 pumps, heat exchangers, water circuits over 4 basins, 4-way and a cooling tower. In particular, to be able to derive the heat from the cooling medium in the evaporator without operational disturbances such as freezing, depending on the temperatures and to what extent the cooling capacity is required, it is also known, the individual types of evaporators different, as a direct evaporator, flooded evaporator with the refrigerant in the tubes or outside the tubes or direct injection, as well as with different refrigerants and pressures in many variants. (Engie, System Solutions, Efficient Refrigeration Pathways, page 6)

It is also known to indicate the heat content of wet exhaust gases with the DBT and the WBT (Dry Bulb and Wet Bulb Temperatures) by measurement by adiabatic cooling of the exhaust gases. However, it is necessary to use a heat exchanger with dormant water instead of a wet bulb with unsteady water content / temperature profile for temperature data.

The protection specified in claim 1 invention is based on the problem of reducing the variety of heat exchange types and double installations for freezing, high environmental impact and energy consumption, to standardize the heat and mass transfer in heat exchangers, provide similarity of flows, to standardize thermal calculations and metrology and to reduce the manufacturing diversity.

This problem is solved by the features recited in claim 1 with a quench cooler in which a heat exchange medium is water and the other heat exchange means is a gas, and (n) wall divider in a housing in the flow direction of the heat exchange medium water and (n + 1) floors to Distribution of gaseous heat exchange means are arranged, and in particular tube plates are arranged for distribution of the gas-shaped heat exchange medium.

Advantageous developments and embodiments of the invention are possible by the, in the dependent claims 2 to 7 measures.

The advantages achieved by the invention are in the environmental impact in particular, instead of heat dissipation in chillers (eChiller) by water and the heating at 6 ° C, corresponding to 6 kcal / kg, the cooling capacity in Quench cooler to F28C 3/06 by evaporation with to provide a specific power of 580 kcal / kg H ₂ O, based on 30 ° C, and to improve the environmental efficiency of water and wastewater by a factor of 100 and 10,000%; Another advantage: The reduction of the amount of waste heat proportional to the COP, z. B. 30%.

Further advantages achieved by the invention are in particular that instead of a variety of exchange systems for cooling with cold and 4-fold execution of water circuits, for the heat exchange according to F28C 3/06 - gas / liquid - a quench cooler is factory-made, the consisting of (n + 1) tubesheets and (n) wall divider unitary; with n = 0; to n = n. The respectively favorable tube plate size for the construction of the quench cooler can be selected in each case from a few floor modules with a width and area ratio of a separation stage. The functions of the quench coolers can then be tried out at the factory and, if necessary, corrected for the density and composition of the gaseous heat exchange medium; Another advantage: The highest exchange rates over the 1st tube plate, decreasing in the direction of flow.

Further advantages achieved by the invention are in particular in the ski areas in that instead of the areal constriction with concrete for the installation of the trickle cooler (Cooltech), in which there is a poor air distribution from the transverse flow in the tower-like installations and performance deficiencies in terms of cooling , the attainment of the target temperature of 1 ° C in the quench coolers is possible and a performance reduction in the factory - without the environmental damage caused by concrete surfaces - is possible.

Another advantage achieved by the invention is that instead of the on-site functional tests at the end of the assembly, the distribution of the gaseous heat transfer medium over the trays during a test run is already shown at the factory. Another advantage: the distribution of air in still water and the ratio of 1 kg-air / 2000 kg-H ₂ O.

An advantageous embodiment of the invention is specified in claim 2. The development according to claim 2 makes it possible to arrange for the distribution of the gaseous heat exchange medium soils in the form of tube sheets, and to assemble the tube sheets by auxiliaries and to verify the distribution function.

In fact, if the layer height above the ground is increased by a factor of 1.5 or 50% in the distribution of gaseous agents, in the quench is distributed 1 kg of gaseous heat exchange medium in 2,000 kg of water. The main advantage: the functional safety of mixing gas / liquid.

An advantageous embodiment of the invention is specified in claim 3. The development according to claim 3 makes it possible to provide a flow of water in the housing via wall divider with underflow and overflow of an inlet connection to a drain pipe.

The achieved advantage is in particular that instead of the contamination on heating surfaces and installations of cooling towers, a water flow according to Bernoulli V = (F m ² .wm / sec) is established; Another advantage: The simplification and the function (safety) in stagnant and flowing water.

An advantageous embodiment of the invention is specified in claim 4. The development according to claim 4 makes it possible to arrange in the housing n + 1 separation stages by n wall divider. Advantage: High exchange rates in individual stages.

The advantages achieved are, in particular, that instead of the formation of 1 separation stage in direct and indirect heat exchangers in repetitive separation stages, in series, high exchange rates are provided by mass transfer in the form of steam. Advantage: safety and efficiency.

An advantageous embodiment of the invention is specified in claim 5. The development according to claim 5 makes it possible that outside air is provided as a heat exchange medium.

The advantages achieved by the invention are in particular that, instead of a refrigeration engineering design, the quench cooler of type F28C 3/06 with factory acceptance for cooling of (food) water with outside air to 1 ° C is provided; Another advantage: the training and instruction of the staff.

An advantageous embodiment of the invention is specified in claim 6. The development according to claim 6 makes it possible that steam-air mixtures are provided as heat exchange means in the operator.

The advantages achieved by the invention are in particular that with the display of the DBT (Dry Bulb) and WBT (Wet Bulb or Feuchtkugeltemperaten) a further (3) use of Quench cooler as a measuring and control device is given at dormant water and adiabatic cooling ,

Another advantage achieved by the invention is that in steam-air mixtures of dryers instead of an indirect heat exchanger with water and dust-containing exhaust air only several components and wall divider are mounted to a quench cooler with multiple stages in a housing; Another advantage: Energy recovery to a supplied water.

An advantageous embodiment of the invention is specified in claim 7. The development according to claim 7 makes it possible that a fan for the transport of the gaseous heat exchange medium is present.

The advantage achieved by the invention is in particular that instead of mounting the refrigeration system on-site, a fan in the size of a separation stage is necessary for the acceptance in the factory; Advantage: Increase of the layer by 40% to 50%, measurable in cm with tape measure.

An embodiment of the invention is illustrated in the drawing and will be described in more detail below.

Show it,

1 a quench cooler

In 1 the construction of a quench cooler is shown in perspective as a sectional image, which consists of a device 1 , a housing 2 , a tube sheet 3 with downwardly directed blow-off openings for gaseous heat transfer media, from wall dividers 4 for water overflow and openings for underflow, from a feed tube 5 , an overflow and outlet pipe 6 for water, a pipeline 7 and a fan 8th for exhaust air and one pipe each 9 for supply air to the tubesheets 3 , from an adjustment flap 10 , with delivery limits 11 and a fitting piece 12 for an energy meter is constructed so that over tube sheets 3 mixing the gaseous heat exchange medium with the heat transfer medium water and the quench cooler is used for water cooling when operating with outside air for water cooling and operating with steam-containing system air and the number of heat exchanger types is reduced by the use as a cooler and heaters of water; where the WBT T is 3-fold in the overflow, within (liquid) and above (gaseous) of the separation stage.

Another operator benefit is given by the fact that tired of concrete constructions by a fitting 12 , on site in the feed tube 5 for a calibrated energy meter, the power acceptance is possible. The main advantage: environmental protection with guaranteed consumption.

In addition to the representation in 1 Other soils and tube sheets are possible, which are not shown in detail. It is important that between 2 wall dividers 4 and the tube sheet is formed a separation stage for forming the WBT T in order to obtain the advantages of the quench cooler according to F28C 3/06. Advantage is the simplification, instead of multiple water circuits (Engie), a design and manufacture of plastic PPs, temperature resistant up to 100 ° C optionally made of sheet metal material: 4301.

• – verbesserter Wärmeaustausch pro kg H₂O, statt 6 kcal/kg–580 kcal/kg;
• – WBT T als Basis des thermischen Rechenprogramm;
• – Umwelt-effizienz als Leitgröße.

Another advantage

• - improved heat exchange per kg H ₂ O, instead of 6 kcal / kg-580 kcal / kg;
• - WBT T as the basis of the thermal calculation program;
• - Environmental efficiency as a benchmark.

Another advantage, instead of freezing, a flap control 10 for cooling to 1 ° C.
Another advantage: weak points diagnosis of dryers based on DBT and WBT. ( DE 20 2016 003 197 U1 . 4 )
Another advantage: simplified factory acceptance, with a fan in the pipeline 9 due to the throughput of the tubesheet and to the extent of the layer height.

One with the quench cooler ( 1 ) to 1 The advantage obtained is, instead of the environmental impact and the power consumption in the water cooling from 50 ° C to 22 ° C in the eChiller, in the plastics processing the water in a quench cooler according to F28C 3/06 with the heat exchange medium outside air and distillation in 4- 6 cooling stages to cool; a major advantage: the savings achieved as follows: consumption eChiller 35 kW Heating of the cooling medium H ₂ O order 6 ° C COP 31.1 35 kW / 3.1 11.29 kW el. Energy Waste heat gross 35 + 11.29 46.29 kW heat dissipation 46.29 × 860 kcal / kWh 39,809 kcal / h Fresh, groundwater 39,809 / 6 ° C 6,634 kg / h (iKU 2017, Newsroom, Success Stories, eChiller) consumption Quench cooler ( 1 ) heat output 35 kW × 860 30,100 kcal Distillation at 30 ° C per kg H ₂ O 580 kcal / kg water requirements 30.100 / 580 (-) 51.9 kg H ₂ O / h Saving per 35 kW (cold) 6,583 kg H ₂ O / h Saving in% 6,583 / 6,634 × 100% 99.2% Savings * at € 4.30 per m ³ 28.3 € / h Saving in the year: 52,664 m ³ H ₂ O € 226,000 in equipment *) Stadtwerke Lindau, Lake Constance: Water + Wastewater Electric energy in the Fan ( 8th ) Exhaust air at 0.6 m ² in 6 stages 2,160 m ³ / h El. Power at the shaft (with 160 mmWS) 1.04 kW Savings of 11.29 kW (eChiller) 10.25 kW Savings in% 10,25 / 11,29 93% The main advantage: environmental efficiency and energy savings with water coolers (eChiller) as numerical value in%: Environmental relief and resource conservation 99.2% Energy saving electric 93% Environmental efficiency, calculated and diagnosed with energy meter for heating and cooling.

LIST OF REFERENCE NUMBERS

1

Device, quench cooler

2

casing

3

Bottom, tubesheet

4

wall divider

5

feeding connection

6

Discharge / overflow connection

7

pipeline

8th

fan

9

pipeline

10

adjustment flap

11

delivery limits

12

Fitting for energy meter

T

WBT, wet bulb, wet bulb temperature

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 2943528 C2 [0002]
• DE 202016003197 U1 [0033]

Claims (7)

Quench cooler in which one heat exchange medium is water and the other heat exchange medium is a gas, where (n) wall dividers ( 4 ) in a housing ( 2 ) in the flow direction of the heat exchange medium water and (n + 1) bottoms ( 3 ) are arranged for distribution of the gaseous heat exchange medium. Quench cooler according to the preceding claim, wherein tube sheets ( 3 ) are arranged for distribution of the gas-shaped heat exchange medium. Quench cooler according to one of the preceding claims, wherein a water passage in the housing ( 2 ) over the wall dividers ( 4 ) with underflow and overflow from an inlet nozzle ( 5 ) to an outlet nozzle ( 6 ) is provided. Quench cooler according to one of the preceding claims, wherein in the housing ( 2 ) n + 1 separation stages ( 4 . 3 . 4 ) by n wall divider ( 4 ) are arranged. Quench cooler according to one of the preceding claims, wherein outside air is provided as a heat exchange means. Quench cooler according to one of the preceding claims, wherein steam-air mixtures are provided as heat exchange means. Quench cooler according to one of the preceding claims, wherein fans ( 8th ) are provided.

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