KR101936823B1 - Electric power generating system using recovering fuel - Google Patents

Abstract

The present invention provides a power generation system using fuel recovered from farm-derived liquid by-products. The power generation system using the fuel recovered from the plant-derived liquid-phase by-products can be obtained by extracting the oil contained in the palm oil through a heat hydrolysis process and heating the remaining liquid by-products to utilize the boiling point difference between the water and the oil contained in the liquid- A combustion unit for supplying the recovered oil to the burner to drive and burn the burner; and a heating unit for heating the water to produce superheated steam by burning the burner, And a steam turbine generator for generating electricity by driving the steam turbine through the superheated steam.

Description

TECHNICAL FIELD [0001] The present invention relates to a power generation system using fuel recovered from a farm-derived liquid by-

The present invention relates to a power generation system using fuel recovered from a palm-derived liquid by-product, and more particularly, to a power generation system using fuel recovered from a palm-derived liquid by-product and using the recovered oil as a burner fuel, The present invention relates to a power generation system using fuel recovered from a palm-derived liquid by-product capable of producing superheated steam through a steam turbine and producing electricity through a steam turbine.

All conventional farm harvesting processes generate significant amounts of biomass and waste. Incineration is mainly used as a method of treating the biomass and the waste, which causes a problem of generating a lot of pollution.

In addition, palm oil wastes such as kernel shell and empty fruit bunch (EFB) and palm oil mill effluent (POME) from farms are difficult and time consuming to be biodegraded by microorganisms.

In order to solve this problem, bio-oils remaining on palm oil extraction process wastewater (POME), which is a by-product generated in the oil production process, are separated by a membrane filter pretreatment means and a physically recovering oil using a waste heat recovering water evaporator Method was used.

However, conventionally, there is a problem that a chemical purification system is used, the basic installation cost and process are very expensive, and the structure is very complicated.

In addition, there is a problem that the power generation system of new and renewable fuels is limited to the solid fuel only, but at present, some of them are used as power generation fuel through the confluence with other petroleum fuels (heavy oil, etc.).

A prior art related to the present invention is Korean Patent Laid-Open Publication No. 10-2005-0083878.

An object of the present invention is to provide a method and apparatus for recovering oil from a palm-derived liquid by-product and using it as a burner fuel, producing a superheated steam through a boiler using the burner fuel, And to provide a power generation system using fuel recovered from the resulting liquid phase byproduct.

In a preferred embodiment, the present invention provides a power generation system using fuel recovered from the farm-derived liquid by-products.

The power generation system using the fuel recovered from the plant-derived liquid-phase by-products can be obtained by extracting the oil contained in the palm oil through a heat hydrolysis process and heating the remaining liquid by-products to utilize the boiling point difference between the water and the oil contained in the liquid- A burner for burning the burner, a burner for burning the burner, and a burner for burning the burner, wherein the burner burns the water to produce superheated steam And a steam turbine generator for generating electricity by driving the steam turbine through the superheated steam.

The separation water rejection includes a mesh filter for filtering the foreign matter in the liquid byproducts and a water boiling point lower than the oil by using the boiling point difference between the water and the oil contained in the liquid by- A water evaporator for selectively evaporating the oil to remove moisture to a moisture content rate of the final fuel type to recover the oil, and a fuel tank for storing the oil from which the moisture is removed.

It is preferable that the separation water rejection further comprises a steam heat exchanger for lowering the pour point of the liquid byproduct while the liquid byproduct containing the moisture supplied from the outside is being transferred to the mesh filter through the pump.

The burner may include a burner for receiving the oil from the fuel tank and using the supplied oil as a fuel to burn the oil and a stack for discharging a combustion gas generated by burning the burner to the outside .

The burning unit may further include a waste heat recovering unit for recovering the heat of the combustion gas flowing from the burner toward the stack and supplying the recovered heat to the burner.

The steam turbine power generation unit includes a boiler for heating and vaporizing water using heat formed through the burning of the burner, a heater installed in the boiler for producing the water to be vaporized into high temperature and high pressure steam, And a steam turbine driven to produce electricity through the high-temperature and high-pressure steam produced from the steam generator.

The steam turbine power generation unit includes a cooling tower for cooling the steam after being driven by the steam turbine, a steam cooling unit for receiving steam cooled from the cooling tower, receiving low temperature water from an external water supply unit, It is preferable to further include a degassing apparatus for supplying the degassing apparatus.

The present invention has the effect of recovering oil from a palm-derived liquid by-product and using it as a burner fuel and producing superheated steam through a boiler using the burner fuel to produce electricity through a steam turbine .

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram showing the process flow of a fuel-based power generation system recovered from the farm-derived liquid by-products of the present invention. FIG.
FIG. 2 is a view showing a configuration of a power generation system using fuel recovered from the palm-derived liquid by-products of the present invention.
FIG. 3 is a view showing the rejection according to the present invention. FIG.
4 is a view showing a combustion part according to the present invention.
5 is a view showing a steam turbine generator according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a fuel-based power generation system recovered from a palm-derived liquid by-product of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a schematic view showing a process flow of a power generation system using a fuel recovered from a palm-derived liquid by-product of the present invention, FIG. 2 is a view showing a configuration of a power generation system using a fuel recovered from a palm- FIG. 3 is a view showing the rejection according to the present invention, FIG. 4 is a view showing a combustion unit according to the present invention, and FIG. 5 is a view showing a steam turbine generator according to the present invention.

1 to 5, the power generation system using fuel recovered from the palm-derived liquid by-products of the present invention comprises a separation rejection 100, a combustion unit 200 and a steam turbine power generation unit 300 .

Here, the liquid-derived by-product of the palm is a liquid by-product obtained by extracting and producing the oil (generally called palm oil, CPO (Crude Palm Oil)) contained in the palm fruit through the thermal hydrolysis process, It contains water (water).
The present invention relates to a method for recovering a fuel from a liquid-derived by-product derived from a plant, and a technique for extracting and producing palm oil contained in the palm oil through thermal hydrolysis is disclosed in Korean Patent Publication No. 10-2012-0080382 entitled " And a method for producing palm oil using the same, " so that a detailed description thereof will be omitted.

The palm-derived liquid by-products have a very high water content and a water content of about 95% depending on the production process.

Tables 1 and 2 below show the results of analyzing the constitution of the liquid-state by-products derived from the palm-free state of the water.

Elemental analysis result
No
Sample name Measurement concentration (%)
Determined Concentration C H O N S One PAO 1 73.4 12.58 14.02 <0.01 <0.01 2 PAO 2 76.3 12.9 10.7 <0.01 <0.01

Industrial analysis result
No
Sample name Air dried Dried Moisture Ash Volatile Fixed Carbon Ash Volatile Fixed Carbon One PAO1 0.48 0.00 99.52 0.00 0.00 99.95 0.05 2 PAO2 0.50 0.00 99.50 0.00 0.00 99.71 0.00

The separation number rejection (100)

The separation water rejection (100) according to the present invention plays a role of recovering oil by evaporating liquid by-products containing water.

The separation rejection unit 100 includes a mesh filter 110 for filtering foreign matters in the liquid byproducts, a service tank 120 for temporarily storing the liquid byproducts filtered by the foreign substances, The liquid byproduct is received and the liquid byproduct is heated to selectively evaporate water using the difference in boiling point between the water contained in the liquid byproduct and the boiling point of the oil to remove moisture up to a water content of 20% A water evaporator 130 for recovering the oil, and a fuel tank 140 for storing the oil from which the moisture is removed.
Here, the boiling point of the oil (PAO) is at least about 200 ° C and the boiling point of water (water) is not more than the boiling point of the oil (PAO) based on the atmospheric pressure (1 atm) by heating the liquid byproducts in the water evaporator 100 ° C, the liquid by-product, which is an oil / water mixture, can be heated through this boiling point to evaporate water selectively to recover the oil.
That is, when the water evaporator 130 is heated, the breaking point is maintained at about 200 ° C. to evaporate water.
Thus, the liquid byproducts are filtered by the mesh filter 110 to filter out foreign substances from the liquid by-products, temporarily store the liquid byproducts filtered in the service tank 120, The water contained in the liquid byproduct is evaporated by heating through the evaporator 130 to remove moisture up to about 20% of moisture content of the final fuel type, for example, water content to recover as oil, ).

In addition, the separation rejection 100 may include a steam heat exchanger (not shown) for lowering the pour point of the liquid byproduct while the liquid byproduct containing the moisture supplied from the outside is being transferred to the mesh filter 110 through the pump 30, (20).

Referring to the above configuration, since the fuel oil as the PAO is basically high at a pour point of about 40 degrees Celsius, the steam from the steam turbine 320, which will be described later, is used as a heating source such as a tank use.

When the liquid by-product, which is the raw material, is first conveyed through the pump 30 in the pond 10 because it is very viscous and contains a large amount of foreign matter, the steam heat exchanger 20 can be used The pour point is lowered and foreign matters are removed through the mesh filter 110. At this time, as shown in FIG. 2, the steam heat exchanger 20 can heat the liquid by-product by using the low-temperature and low-pressure steam supplied from the steam turbine 320.

Water evaporator 130 is then used to remove water up to the moisture content of the final fuel type and recover the oil.

In the combustion unit 200,

The combustion unit 200 according to the present invention supplies the recovered oil to the burner 210 to drive and burn the burner 210.

The combustion unit 200 includes the burner 210 that receives the oil from the fuel tank 140 and uses the supplied oil as a fuel to burn the oil, And a stack 220 for discharging the generated combustion gas to the outside.

The burner 200 may further include a waste heat recovery unit 230 for recovering the heat of the combustion gas flowing from the burner 210 toward the stack 220 and supplying the recovered heat to the burner 210 ).

That is, referring to the above configuration, the produced PAO oil burns through the dedicated burner 210 and serves to supply a heat source for steam production.

Here, the combustion air to be described later collects the waste heat of the exhaust gas or the combustion gas flowing through the stack 220 and supplies it to the burner 210 in the form of preheated air, thereby increasing the efficiency of the entire system.

The steam turbine power generator 300 includes:

The steam turbine generator 300 according to the present invention generates superheated steam by heating water according to the burning of the burner and drives the steam turbine 320 through the superheated steam to produce electricity.

The steam turbine power generation unit 300 includes a boiler 310 for heating and vaporizing water using heat formed through the burning of the burner 210, And a steam turbine 320 driven to produce electricity through the high-temperature and high-pressure steam produced from the heater 330. The steam generator 330 generates steam at high temperature and high pressure.

The steam turbine generator 300 includes a cooling tower 350 for cooling the steam after being driven by the steam turbine 320 and a steam generator 350 for receiving steam cooled from the cooling tower 350, And a deaerator 340 for supplying low temperature water to the boiler 310 from the steam generator 360.

Configuration number 311 is the boiler tube, and 321 is the generator.

Referring to the above configuration, the heat generated through the combustion of the oil that is the PAO is converted to saturated vapor through a water tube or other type of boiler.

Subsequently, superheated steam may be produced to drive the turbine while passing through the superheater 330.

At this time, the turbine 320 is driven, and some of the steam is used to maintain the PAO at a low temperature and a low pressure.

Further, most of the steam is condensed as a whole after the turbine is driven, and after passing through the cooling tower 350, it is supplied to the boiler 310 after degassing through the degassing unit 340 and can be circulated.

Through the above-described structure and operation, the embodiment of the present invention can recover oil from the palm-derived liquid by-products and use it as a burner fuel, and produce superheated steam through a boiler using the burner fuel, Electricity can be produced through the turbine.

In addition, the embodiment according to the present invention has an advantage of being able to actively respond to the demand for small-scale distributed generation in Southeast Asia by linking an economical simple physical refining system, a palm oil liquid by-product dedicated combustor, and a power generation system using the same.

In addition, each technology has an advantage that it can be applied to biofuel feedstock, industrial combustion system, and large-scale power generation system.

As described above, a specific embodiment of the power generation system using the recovered fuel from the palm-derived liquid by-products of the present invention has been described, but it is obvious that various modifications are possible within the scope of the present invention.

Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be determined by the scope of the appended claims and equivalents thereof.

It is to be understood that the foregoing embodiments are illustrative and not restrictive in all respects and that the scope of the present invention is indicated by the appended claims rather than the foregoing description, It is intended that all changes and modifications derived from the equivalent concept be included within the scope of the present invention.

100: rejection of separation
110: mesh filter
120: Service tank
130: Water evaporator
140: Fuel tank
200:
210: Burner
220: Stack
300: Steam turbine generator
310: Boiler
320: Steam turbine
330: Heater

Claims (7)

The oil contained in the palm fruit is extracted and heated by a known thermal hydrolysis process, and the remaining palm-derived liquid by-products are heated to selectively evaporate moisture through the difference in boiling point between the water contained in the liquid by-product and the PAO to recover PAO (110) for filtering the foreign matter in the liquid byproduct, and heating the liquid byproduct to remove moisture to the moisture content of the final fuel type by heating the PAO A water tank 140 for storing the PAO from which the moisture is removed, and a liquid byproduct containing the moisture supplied from the outside are transferred to the mesh filter 110 through a pump (100) comprising a steam heat exchanger for applying heat to the liquid byproduct during the heating process;
The PAO supplied to the burner is supplied to the burner, and the PAO is supplied from the fuel tank 140 to burn and burn the burner 210. The burner 210 burns the PAO using the supplied PAO as fuel A stack 220 for discharging the combustion gas generated as the combustion gas is burned from the burner 210 to the outside, a heat recovery unit 220 for recovering the heat of the combustion gas flowing from the burner 210 toward the stack 220, A burner (200) including a waste heat recoverer for supplying the recovered heat to the burner (210); And
The water is heated to produce superheated steam by heating the water in accordance with the burning of the burner 210 and by using the heat formed through the combustion of the burner to produce electricity by driving the steam turbine through the superheated steam, A heater 330 installed in the boiler for producing the water to be vaporized into high temperature and high pressure steam and a heater 330 for generating electricity through the high temperature and high pressure steam produced from the heater A steam turbine comprising: a steam turbine; a cooling tower for cooling the steam after being driven by the steam turbine; a steam cooling unit for receiving steam cooled from the cooling tower; And a steam turbine generator (300) including the apparatus,
Wherein the steam heat exchanger heats the liquid by-products using the low-temperature, low-pressure steam supplied from the steam turbine.

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