CN1057093A

CN1057093A - The combustion engine flue gas waste heat reduces air inlet temp

Info

Publication number: CN1057093A
Application number: CN90104235A
Authority: CN
Inventors: 史政; 曾荣; 史俊
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-06-07
Filing date: 1990-06-07
Publication date: 1991-12-18

Abstract

At the smokejack opening of combustion machine, utilize valve control high-temperature flue gas to enter the absorption refrigeration device, be directly changed into chilled water, reduce the empty temperature of burning machine inlet with the circuit chilled water, and, improve the quality and the unit intensity of input combustion machine air by the self-cleaning air cooling device, improve the combustion machine and exert oneself and power.The surface of absorption refrigeration device low-temperature flue gas output pipeline is coated with the teflon coating layer that prevents the corrosion of flue gas acidic materials, can reduce its output temperature, has increased the afterheat utilization amount.Waste heat can also be concentrated the mode of supplying with low-temperature receiver by concentrating refrigeration, is factory, hotel, office's central air-conditioner and resident's room temperature lowering, saves air conditioning electricity.

Description

The combustion engine flue gas waste heat reduces air inlet temp

The invention relates to the device that mechanical engineering gas turbine fume afterheat is used to reduce inlet air temperature.

Dynamic power machine is discharged the utilization of fume afterheat and is reduced inlet air temperature, is the problem that people pay attention to studying always.The disclosed engine exhaust gas utilizing waste heat for refrigeration of Chinese patent CN2042113 noise reduction dual-purpose apparatus, it mainly is the refrigeration that waste gas is used for daily life, be not used in the ambient temperature aspect that influences large-sized power machinery output power, also do not further consider the measure that reduces temperature of exhaust fume.

The purpose of the invention is the device that designs a kind of further reduction combustion machine smoke evacuation outlet temperature, utilizes combustion engine flue gas waste heat reduction inlet air temperature, improves the output power and the efficient of high-power combustion machine.

The theory structure of the invention as shown in Figure 1.

The required air of combustion mechanomotive force generally sucks (also having by compressor 26 inputs) combustion chamber 1 from atmosphere, again with fuel oil mixed combustion, produces high-temperature high-pressure air flow, promotes the impeller High Rotation Speed of combustion machine 2, drives generator 3 output electric energy. High-temperature high-pressure air flow consumes the portion of energy except promoting 2 generatings of combustion machine, also has big amount temperature up to the flue gas waste heat of 400 to 500 degree Celsius, discharges the atmosphere from its chimney 5 by smokejack 4, has both wasted heat energy, has polluted again environment.

Because the height of ambient temperature has determined the import wind-warm syndrome, influence exerting oneself of combustion machine 2 significantly, so the control of inlet air temperature causes people's attention.

The invention is to draw at the smokejack opening 6 that combustion machine 2 fume afterheats are exported to take out part or all of flue gas, input absorption refrigeration device 7, with the thermal power transfer of flue gas is chilled water, chilled water enters self-cleaning air cooling device 9 by output pipeline 8, the air temperature that has purified through self-cleaning air cooling device 9 is reduced, and enter firing chamber 1 by duct attenuation device 10.Reduced purifying air because density increases of temperature, unit mass increases, and makes to enter firing chamber 1 total oxygen content and increase, and it is more abundant burn, thereby the gas turbine output power is improved, oil consumption decline.

Chilled water enters the intensify heat transfer pipe 11 of self-cleaning air cooling device 9 by output pipeline 8, after chilled water has absorbed the heat of air, is boosted by the power attraction of little water pump 12, by chilled water input pipeline 13, enters absorption refrigeration device 7.Absorption refrigeration device 7 reduces the water temperature that raise again, and chilled water is led 8 by its output tube again and delivered to intensify heat transfer pipe 11, and formation can constantly reduce the purify air refrigerant water system of temperature of combustion machine.

Absorption refrigeration device 7 needs institute's liberated heat because of above-mentioned technological process, absorb by cooling water, enter cooling tower 15 by coolant intake pipe road 14, attract through the power of cooled water by the little water pump 16 of cooling water, pump into coolant outlet hose road 17, enter absorption refrigeration device 7, reduced the working medium temperature of absorption refrigeration device 7, fail back cooling tower 15 again, form the circulatory system of another cooling water.

The flue gas of smokejack opening 5 inputs absorbs its energy by absorption refrigeration device 7, has reduced temperature, discharges atmosphere by surplus cigarette low temperature output pipeline 18.Smokejack opening 5 is equipped with valve 19, and the flow of flue gas input absorption refrigeration device 7 and discharge chimney 5 can be controlled in the position of adjusting valve 19.Valve 19 is pulled and pillar is formed to perpendicular or parallel retaining with the flue gas output stream by two, when absorption refrigeration device 7 needs more fume afterheat, then retaining is pulled place with the flue gas output stream to perpendicular position; When absorption refrigeration device 7 does not need fume afterheat, then the retaining of valve 19 is pulled place with the flue gas output stream to the position that parallels.The inlet opening of absorption refrigeration device 7 also is provided with an intake valve 20, and the auxiliary valve that rotates is controlled the flue gas flow that enters absorption refrigeration device 7.

The temperature of general low temperature output pipeline 18 is all more than 170 ℃ dew point, to prevent the sour corrosion in the flue gas.The invention is on the surface of the low temperature output pipeline 18 of absorption refrigeration device 7, be coated with teflon coating layer 21, prevented that the flue gas middle acid substance is to Corrosion of Pipeline, thereby the temperature that can make the outlet of surplus cigarette is reduced to below 100～120 ℃ the dew point, increase the afterheat utilization amount, improved efficient.

Self-cleaning air cooling device 9 is widely different commentaries on classics garden tubes, and its structure as shown in Figure 2.The surface of widely different commentaries on classics garden tube has hole, garden 22, on each hole, garden 22 air filter 23 is housed all.Air enters the intensify heat transfer pipe 11 in the tube of widely different commentaries on classics garden through after the filter 23.Intensify heat transfer pipe 11 becomes the multilayer ring-type by the single tube proper alignment, makes heat transfer area increase.Filter 23 adopts general bavin by the machine air-strainer, can increase the filtering area, reduces resistance of air.

After the air-strainer 23 surperficial contaminations, windage will be increased, at this moment, widely different commentaries on classics garden tube rotates to blowdown tank 24 places automatically successively, by the blowback of pressurized air 25, makes dust fall into blowdown tank 24 and discharges.Since this blowback catharsis, the resistance minimum of maintenance air input filter 24.

The chilled water of the invention absorption refrigeration device 7 is from fume afterheat, directly transform about refrigeration to 5～7 ℃, the end that has guaranteed the cold wind device is poor, make reinforcement cooling tube 11 be in the low temperature situation, the air temperature that enters in the self-cleaning device is reduced, reaches the purpose of exerting oneself, reduce oil consumption that improves the combustion machine, for example with temperature when 35 ℃ are reduced to 15 ℃, the output power of combustion machine can improve 12%～18%, and oil consumption descends 4～8%.Low temperature output pipeline 18 is owing to be coated with teflon coating layer 21, and fume afterheat can be reduced to 100～120 ℃ from about 170 ℃, has also increased the afterheat utilization amount.Afterheat utilization can also be used for the urban area central cooling by concentrating refrigeration, concentrating the mode of supplying with low-temperature receiver, as the central air-conditioner of factory, hotel, office building and resident's room temperature lowering, saves a large amount of air conditioning electricities.

Claims

1, a kind of device of combustion engine flue gas waste heat reduction air inlet temp is made up of firing chamber, combustion machine, generator, gas exhaust duct, chimney, refrigeration system, and it is characterized in that: described device is made of smokejack opening and valve control, fume afterheat absorption refrigeration device, refrigerant water system, self-cleaning air cooling device.

2, combustion engine flue gas waste heat according to claim 1 reduces the device of air inlet temp, it is characterized in that: the valve of smokejack opening, have with the flue gas output stream to perpendicular or parallel freely regulated baffle plate and pillar, and intake valve removes to control high-temperature flue gas and enters the absorption refrigeration device.

3, combustion engine flue gas waste heat according to claim 1 reduces the device of air inlet temp, it is characterized in that: absorption refrigeration device chilled water is given self-cleaning air cooling device air cooling-down by pipeline, the water of cooling tower is by the temperature of pipeline reduction absorption refrigeration device, and pipeline water attracts to form the self-circulatory system by little water pump power.

4, combustion engine flue gas waste heat according to claim 1 reduces the device of air inlet temp, it is characterized in that: absorption refrigeration device low temperature output pipeline surface is coated with the teflon coating layer that prevents the corrosion of flue gas acidic materials.

5, combustion engine flue gas waste heat according to claim 1 reduces the device of air inlet temp, it is characterized in that: the self-cleaning air cooling device is a widely different commentaries on classics garden tube, its surface has the hole, garden, air filter is equipped with on the hole in the garden, widely different commentaries on classics garden tube rotates to drainage trap automatically successively, by the pressurized air blowback, the dust that is adsorbed on air filter fallen in the groove discharge, widely different commentaries on classics garden tube is that the single tube proper alignment becomes the multilayer ring-type by intensify heat transfer pipe.