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Efficient waste heat recycling comprehensive utilizing system

A waste heat recovery and high-efficiency technology, applied in the field of waste heat recovery, can solve the problems of providing a comfortable working environment for unoperable workers and difficult conditions, and achieve the effects of comprehensive functions, fuel saving, and high waste heat recovery efficiency

Inactive Publication Date: 2016-04-13
张东 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In addition, drilling operations in hot climate areas are difficult and cannot provide a comfortable working environment for operators

Method used

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  • Efficient waste heat recycling comprehensive utilizing system
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  • Efficient waste heat recycling comprehensive utilizing system

Examples

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Embodiment 1

[0023] A high-efficiency waste heat recovery comprehensive utilization system, such as figure 1 As shown, it can be used for exhaust gas and cooling water waste heat recovery of diesel engines or gas engines, which includes tail gas waste heat recovery subsystems, cooling water waste heat utilization subsystems and power generation cooling subsystems. The tail gas waste heat recovery subsystem includes a waste heat boiler and a second heat exchanger, and the waste heat boiler is connected to the exhaust gas pipe for introducing the flue gas into the waste heat boiler to absorb high-temperature heat in the exhaust gas of the diesel engine or gas engine, Reduce the flue gas temperature as high as 400°C to 150°C, which can reduce environmental pollution. The waste heat boiler absorbs exhaust gas heat with a temperature as high as 400°C; the outlet end of the waste heat boiler is connected to a second heat exchanger through a flue, and the flue gas outlet of the second heat exchan...

Embodiment 2

[0026] A high-efficiency waste heat recovery comprehensive utilization system, such as figure 2 As shown, it can be used for diesel engine and gas engine tail gas and cooling water waste heat recovery and utilization, which includes tail gas waste heat recovery subsystem, cooling water waste heat utilization subsystem and power generation cooling subsystem; the cooling water waste heat utilization subsystem includes water jacket Connect the first heat exchanger for heat exchange, waste heat boiler, turbo generator and absorption refrigerator, the first heat exchanger is connected with the waste heat boiler through the delivery pipe, and the waste heat boiler is connected with the steam turbine through the delivery pipe The generator is connected, the turbogenerator is connected to the absorption refrigerator through the delivery pipe, and the absorption refrigerator is connected to the first heat exchanger through the delivery pipe to form a cooling water waste heat utilizatio...

Embodiment 3

[0030] A high-efficiency waste heat recovery comprehensive utilization system, such as image 3As shown, it can be used for recovery and utilization of diesel engine exhaust and cooling water waste heat, including tail gas waste heat recovery subsystem, cooling water waste heat utilization subsystem and power generation cooling subsystem, etc. The cooling water waste heat utilization subsystem includes a first heat exchanger connected to the water jacket for heat exchange, a waste heat boiler and a steam turbine generator. The first heat exchanger is connected to the waste heat boiler through pipelines, and then connected to the steam turbine generator to generate electricity , the turbogenerator is connected to the absorption refrigerating machine, and the absorption refrigerating machine can be connected to the first heat exchanger through the heat user and the third heat exchanger to form a cooling water waste heat utilization subsystem circulation loop. The third heat exch...

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Abstract

The invention discloses an efficient waste heat recycling comprehensive utilizing system which comprises a tail gas waste heat recycling subsystem, a cooling water waste heat utilizing subsystem and a power generating cooling subsystem. The tail gas waste heat recycling subsystem comprises a waste heat boiler and a second heat exchanger, wherein the waste heat boiler is connected with a smoke discharging pipe. The efficient waste heat recycling comprehensive utilizing system has the advantages and the beneficial effects that firstly, the waste heat recycling efficiency is high, the high-temperature smoke which is discharged by a diesel engine and a gas engine and is at the temperature of 400 DEG C is cooled to be 60 DEG C through two levels of heat exchange, and heat of a water jacket of the diesel engine and a water jacket of the gas engine is recycled and utilized sufficiently, and the discharging recycling rate reaches 90% or higher; secondly, diesel engine and gas engine cooling and user hot water use can be both achieved, and functions are comprehensive; and thirdly, the total discharging amount of pollutants is greatly reduced, due to the fact that a large amount of steam can be generated through waste heat of smoke, a large amount of fuel is saved and the total discharging amount of main pollutants is also greatly reduced, use of a cylinder jacket water and air cooling fan can be stopped, and energy of a whole unit can be saved by 8% or higher.

Description

【Technical field】 [0001] The invention relates to the technical field of waste heat recovery, in particular to an energy-saving and environment-friendly high-efficiency waste heat recovery comprehensive utilization system for recovering waste heat discharged from diesel engines and gas engines. 【Background technique】 [0002] Oilfield mechanical drilling rigs are generally equipped with three 190 series diesel engines. According to information, only about 40% of the heat energy generated by each diesel engine is converted into mechanical energy, 35% is discharged from the flue gas, and 25% is taken away by heat dissipation, that is, 60% of the heat energy has no effect. It can be seen that the conversion of diesel engine heat energy into useful work is very low, and the waste is huge. [0003] In addition to diesel engines, gas engines in use also have the above-mentioned defects, and the cooling water heat is difficult to dissipate, and the cooling effect is very poor. ...

Claims

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Application Information

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IPC IPC(8): F22B1/18F25B15/06F25B27/02F01D15/10
CPCF01D15/10F22B1/1807F22B1/1815F25B15/06F25B27/02Y02A30/274Y02B30/625Y02E20/30Y02P80/15
Inventor 张东高军喜
Owner 张东
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