CN103611451B - Device and method for adding fuel additive to steam injection boiler - Google Patents
Device and method for adding fuel additive to steam injection boiler Download PDFInfo
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- CN103611451B CN103611451B CN201310572285.1A CN201310572285A CN103611451B CN 103611451 B CN103611451 B CN 103611451B CN 201310572285 A CN201310572285 A CN 201310572285A CN 103611451 B CN103611451 B CN 103611451B
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- 239000002816 fuel additive Substances 0.000 title claims abstract description 211
- 238000010793 Steam injection (oil industry) Methods 0.000 title claims abstract description 96
- 238000000034 method Methods 0.000 title abstract description 21
- 239000000446 fuel Substances 0.000 claims abstract description 122
- 239000003814 drug Substances 0.000 claims abstract description 107
- 238000002485 combustion reaction Methods 0.000 claims description 41
- 239000003085 diluting agent Substances 0.000 claims description 34
- 239000007788 liquid Substances 0.000 claims description 27
- 238000000889 atomisation Methods 0.000 claims description 11
- 238000003756 stirring Methods 0.000 claims description 8
- 239000000654 additive Substances 0.000 claims description 5
- 230000000996 additive effect Effects 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 239000010763 heavy fuel oil Substances 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims 3
- 238000002156 mixing Methods 0.000 abstract description 19
- 239000003921 oil Substances 0.000 description 17
- 239000000295 fuel oil Substances 0.000 description 9
- 239000010779 crude oil Substances 0.000 description 8
- 238000011084 recovery Methods 0.000 description 6
- 238000011161 development Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
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- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
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- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
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- Feeding And Controlling Fuel (AREA)
Abstract
The invention provides a device and a method for adding a fuel additive to a steam injection boiler. The device comprises a medicine chest, a proportioning pump, a stirrer and a connecting pipeline. The medicine chest is of a box body structure and comprises a medicine adding port and a medicine outlet; the stirrer passes through an opening arranged at the top of the medicine box, a control part of the stirrer is positioned outside the medicine box and is fixedly connected with the medicine box at the opening at the top of the medicine box, and blades and a connecting shaft of the stirrer are positioned on the inner side of the medicine box; the proportional pump comprises an input port and an output port, the input port of the proportional pump is connected with the medicine outlet of the medicine box, and the output port of the proportional pump is connected with one end of the connecting pipeline; the other end of the connecting pipeline is connected with the steam injection boiler. The fuel additive adding device for the steam injection boiler provided by the invention replaces a manual adding mode, solves the technical problem that the manual adding mode easily causes uneven mixing of fuel and fuel additive, reduces the workload of operators and improves the use efficiency of the fuel additive.
Description
Technical Field
The invention relates to the field of heavy oil thermal recovery, in particular to a device and a method for adding a fuel additive to a steam injection boiler.
Background
Petroleum exists in naturally occurring oil fields, and its recovery techniques vary with the type of field, the nature of the crude oil. Petroleum oils with high asphaltene content and low wax content in crude oil are called heavy oils. The thick oil has high viscosity and difficult flowing, so the development difficulty is high. The heavy oil occupies a great proportion in the world oil gas resources, and the development of the heavy oil field is more and more emphasized in all countries in the world. At present, the development of a thick oil field at home and abroad mainly adopts a thick oil thermal recovery technology, and the difficulty of thick oil development is reduced mainly by raising the temperature of an oil layer and reducing the viscosity of thick oil. In the heavy oil thermal recovery, the main technical methods adopted include steam huff and puff, steam flooding, in-situ oil combustion and the like. Among them, steam stimulation is the main technology for developing thick oil with its remarkable superiority.
The steam huff and puff is also called as periodic steam injection or circulating steam injection, high-temperature high-pressure wet saturated steam is injected into a thick oil well by using steam injection boiler equipment, crude oil in a certain range in an oil layer is heated to reduce the viscosity, and then the crude oil is recovered. The mining process is divided into three stages: steam injection stage, well stewing stage and well opening and recovery stage. Steam injection boiler equipment used in the steam injection stage, also known as wet steam generators, refers to mechanical equipment that uses the heat energy of fuel or other energy sources to heat water into steam. The steam injection boiler is a high energy consumption device, and the thermal efficiency of the steam injection boiler directly influences the development cost of the heavy oil field. The heat efficiency of special steam injection boiler equipment for oil field thermal recovery is tested according to a test method of GB10180-88 'industrial boiler thermal engineering experimental specification', and the average heat efficiency of the existing steam injection boiler is 75-80%. Wherein fuel combustion loss is an important cause of the reduction in thermal efficiency of the steam injection boiler. The fuel used by the steam injection boiler of the oil field mainly comprises fuel oil and fuel gas, such as crude oil, natural gas and the like. The fuel is output from the fuel storage device, atomized by the fuel nozzle through the fuel pipeline, and then brought into the hearth for combustion by the wind energy generated by the blower. For economic reasons, most of the fuel is derived from oil field produced crude oil. The crude oil produced by the self-production process is high in viscosity and density, so that large-particle fuel oil with a compact molecular structure cannot be fully combusted in the quick and short combustion process of crude oil particles, the fuel burnout rate is reduced, and the thermal efficiency of the steam injection boiler is reduced.
Adding fuel additives to the fuel is one way to increase the thermal efficiency of steam injection boilers. The fuel additive is an organic catalyst or combustion improver with combustion-supporting capability, and the fuel additive can break up the original molecular structure of the fuel, reduce the viscosity of the fuel and enable the fuel to achieve the combustion effect close to that of light fuel, thereby improving the fuel burnout rate and reducing the chemical products of fuel consumption. In general, when a liquid fuel is used, a fuel additive is used to burn the liquid fuel as sufficiently as possible, and when a gas fuel is used, a fuel additive may be added to improve the combustion efficiency of the gas fuel. At present, fuel additives are added into a fuel container in a manual mode for static settlement and are used after being naturally mixed. When the fuel additive is added to the fuel storage device manually, the fuel additive and the fuel are mixed naturally, because the fuel storage device has large capacity, and the fuel additive and the fuel are difficult to be stirred sufficiently and uniformly. The static settling and natural mixing mode is difficult to uniformly mix the fuel additive and the fuel, thereby reducing the combustion efficiency of the fuel.
Disclosure of Invention
The invention provides a fuel gas (fuel oil) additive (hereinafter referred to as fuel additive) adding device and a fuel additive adding method, which can uniformly add the fuel additive into fuel.
In order to solve the technical problems, the technical scheme of the invention is as follows:
the utility model provides an injection boiler fuel additive adds device, the device includes medical kit, proportioning pump, agitator, connecting tube, wherein:
the medicine box is of a box body structure and is used for containing fuel additives and diluents, and the medicine box comprises a medicine adding port and a medicine outlet; the dosing port is used for adding a fuel additive and a diluent, and the medicine outlet is used for outputting the fuel additive;
the proportional pump is used for adjusting the output quantity of the fuel additive in the medicine box in unit time, and comprises an input port and an output port, and the input port of the proportional pump is connected with the medicine outlet of the medicine box; the output port of the proportioning pump is connected with one end of the connecting pipeline and is used for outputting the fuel additive to the steam injection boiler through the connecting pipeline;
the stirrer is used for stirring the fuel additive and the diluent; the stirrer comprises a control part, a connecting shaft and blades which are connected in sequence; the top of the medicine box is also provided with an opening, and the stirrer passes through the opening arranged at the top of the medicine box; the control part is positioned outside the medicine box and is fixedly connected with the medicine box at an opening at the top of the medicine box; blades and a connecting shaft of the stirrer are positioned on the inner side of the medicine chest;
the connecting pipeline is used for connecting the proportional pump and the steam injection boiler, one end of the connecting pipeline is connected with an output port of the proportional pump, and the other end of the connecting pipeline is connected with the steam injection boiler.
The preferable scheme of the adding device for the fuel additive of the steam injection boiler is that the adding device for the fuel additive of the steam injection boiler further comprises an atomizing device for atomizing the fuel additive; the atomizing device comprises an input end and an output end, the input end of the atomizing device is connected with an output port of the proportioning pump through a connecting pipeline, and the output end of the atomizing device is connected with an air outlet pipeline of an air blower of the steam injection boiler.
The fuel additive adding device for the steam injection boiler has the preferable scheme that the atomizing device is an annular atomizer; the annular sprayer comprises an input end for inputting fuel additives, an annular hollow nozzle communicated with the input end, and nozzles arranged on the inner side wall of the nozzle at equal intervals and used for spraying the fuel additives.
The preferable scheme of the fuel additive adding device for the steam injection boiler is that the medicine box further comprises a drain outlet for cleaning the medicine box and removing residual fuel additives.
In the above steam injection boiler fuel additive adding device, preferably, a medicine box of the steam injection boiler fuel additive adding device is further provided with a liquid level meter for monitoring a liquid level of liquid in the medicine box.
The above-mentioned steam injection boiler fuel additive adding device, its preferred scheme is, the said connecting line is the connecting hose.
In combination with the fuel additive adding device for a steam injection boiler of the present invention, the present invention provides a combustion system for a steam injection boiler, comprising a blower device, a fuel supply device, a boiler combustion device, wherein,
the blower device is used for providing wind energy and bringing fuel into the combustion device of the steam injection boiler;
the fuel supply device is used for supplying fuel required by the boiler combustion device;
the boiler combustion device is used for providing a combustion space for fuel and outputting energy generated by combustion;
the combustion system of the steam injection boiler also comprises a fuel additive adding device of the steam injection boiler provided by any one of the embodiments 1 and 2 of the invention.
The invention provides a fuel additive adding method, which comprises the following steps:
s1: mixing the fuel additive with the diluent in the kit container;
s2: the medicine-chest container quantitatively adds the diluted fuel additive to the fuel according to the addition ratio of the fuel additive to the fuel,
wherein the calculation formula of the addition amount L of the fuel additive to the fuel per unit time is as follows:
l ═ K (1+ P)/(H × P), where L represents the amount of fuel additive added to the fuel per unit time, M represents the amount of fuel, K represents the mixing ratio of fuel additive to fuel, H represents the fuel consumption time, and P represents the mixing ratio of fuel additive to diluent.
In the above fuel additive adding method, it is preferable that the fuel additive quantitatively outputted in S2 is atomized and then added to the fuel.
The fuel additive adding device and the adding method for the steam injection boiler provided by the invention have the advantages that the fuel additive is quantitatively output by setting the adding ratio of the fuel additive to the fuel, the fuel additive is uniformly added into the fuel, the fuel additive can be fully and uniformly mixed with the fuel, the viscosity of the fuel is reduced, the combustion efficiency of the fuel is improved, and the thermal efficiency of the boiler is improved.
Drawings
FIG. 1 is a schematic view showing the structure and connection relationship of parts of a fuel additive adding apparatus for a steam injection boiler according to embodiment 1 of the present invention;
FIG. 2 is a schematic structural view of a proportioning pump 2 used in the fuel additive adding apparatus for a steam injection boiler according to embodiment 1 of the present invention;
FIG. 3 is a schematic view showing the structure of the stirrer 3 and the connection relationship of the respective parts in the fuel additive adding apparatus for a steam injection boiler according to embodiment 1 of the present invention;
FIG. 4 is a schematic view showing the connection between a fuel additive adding device of a steam injection boiler and the steam injection boiler according to embodiment 1 of the present invention;
FIG. 5 is a schematic view showing the structure and connection relationship of parts of a fuel additive adding apparatus for a steam injection boiler according to embodiment 2 of the present invention;
FIG. 6 is a schematic view showing the construction of a ring-shaped atomizer in a fuel additive adding apparatus of a steam injection boiler in accordance with embodiment 2 of the present invention;
FIG. 7 is a schematic view showing the structure and connection relationship of a fuel additive adding device of a steam injection boiler, which comprises the sewage draining outlet 3 and the liquid level meter 4, according to embodiment 2 of the present invention;
FIG. 8 is a schematic view showing the connection between a fuel additive adding device of a steam injection boiler and the steam injection boiler according to embodiment 2 of the present invention;
fig. 9 is a schematic structural diagram of a combustion system of a steam injection boiler including a fuel additive adding apparatus of the steam injection boiler according to any one of embodiments 1 and 2 of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Embodiment 1 is a fuel additive adding device for a steam injection boiler provided by the invention. FIG. 1 is a schematic view showing the structure and connection of parts of a fuel additive adding apparatus for a steam injection boiler according to embodiment 1 of the present invention. As shown in fig. 1, the fuel additive adding device for a steam injection boiler provided by the invention comprises a medicine box 1, a proportioning pump 2, a stirrer 3 and a connecting pipeline 5, wherein:
the medical kit 1 can be used for holding fuel additive and diluent, the medical kit 1 can be box structures such as cuboid, cylinder. The medicine box 1 comprises a medicine adding port 101 and a medicine outlet port 102. The dosing port 101 may be used for adding fuel additives and diluents. The medicine adding port 101 may be provided at the top of the medicine box 1 or at the upper half of the side wall. The medicine outlet 102 may be used for outputting fuel additives. The medicine outlet 102 may be provided at the bottom or lower half of the side wall of the medicine box 1. As shown in fig. 1, the medicine box 1 in the present embodiment is a rectangular parallelepiped, the medicine inlet 101 is located at the top of the medicine box 1, and the medicine outlet 102 is located at the lower half of the side wall of the medicine box 1.
The proportional pump 2 can be used to adjust the output per unit time of the fuel additive in the medicine tank 1. The proportional pump comprises an input port and an output port, and the input port of the proportional pump is connected with the medicine outlet of the medicine box; and the output port of the proportioning pump is connected with one end of the connecting pipeline and is used for outputting the fuel additive to the steam injection boiler through the connecting pipeline. The proportioning pump 2 can be an infusion pump which can deliver liquid materials according to a certain proportion to meet the process flow requirements. Fig. 2 is a schematic view of a structure of a proportional pump 2 used in this embodiment 1. As shown in fig. 2, the proportional pump 2 may include: the pump body 203 is internally provided with a driving piston which reciprocates, an input port 201 which is connected with the pump body 203 and is used for sucking liquid, an output port 202 which is connected with the pump body 203 and is used for pumping liquid, and an electric control group 204 which is connected with the pump body and is used for providing power for the pump body and adjusting the output quantity of the pump body per unit time. The input port 201 of the proportional pump may be connected to the medicine outlet 102 of the medicine box 1. The output port 202 of the proportional pump may be connected to one end of the connecting pipe 5. The output port 202 of the proportional pump may also include a flow meter 2021 for displaying the output of the proportional pump 2 per unit time in real time. The proportioning pump 2 in embodiment 1 of the present invention is not limited to the proportioning pump structure, and an infusion pump capable of delivering liquid materials in a certain proportion to meet the process flow requirement in the current domestic and foreign markets may be used as the proportioning pump 2 in embodiment 1 of the present invention.
The connection mode between the medicine outlet 102 of the medicine box 1 and the input port 201 of the proportional pump 2 can be realized by the following modes:
the medicine outlet 102 of the medicine box 1 is connected with the input port 201 of the proportional pump 2 through a flange;
the medicine outlet 102 of the medicine box 1 is connected with the input port 201 of the proportional pump 2 by welding.
The stirrer 3 can be used for mixing and stirring the fuel additive and the diluent in the medicine tank 1 to sufficiently mix the fuel additive and the diluent, thereby improving the use efficiency of the fuel additive. The agitator 3 may include a control portion 301, a connection shaft 302, and a blade 303. Fig. 3 shows the structure of the stirrer 3 and the connection relationship of the respective members in this embodiment 1. The control portion 301 may be provided on the top of the medicine box 1. The control unit 301 is fixedly connected to the top of the medicine box 1, and may be connected to the top by, for example, a screw or welding. An opening is provided at the top controlling portion 301 of the medicine box 1, and has a connecting shaft 302 extending downward to the inside of the medicine box 1 and connecting the controlling portion 301 and the blade 303. The control part of the stirrer 3 may further include a timing controller to realize a timing stirring function.
And a connecting pipeline 5 for conveying the fuel additive to the steam injection boiler equipment by the proportional pump. One end of the connecting pipeline 5 is connected with the output port 202 of the proportioning pump 2, and the other end of the connecting pipeline 5 is connected with the steam injection boiler.
The connection pipe 5 described in the above embodiment 1 may be a connection hose.
The medicine box 1 described in the above embodiment 1 may further include a drain 3, the drain 103 being used for cleaning the medicine box 1 and discharging the remaining fuel additive. The drain 103 may be provided at the bottom of the medicine box 1 or at the lower half of the side wall.
The steam injection boiler fuel additive adding apparatus according to embodiment 1 may further include a liquid level meter 4, and the liquid level meter 4 may be configured to monitor a liquid level of the liquid in the medicine tank 1. The level gauge 4 may be a magnetic float level gauge, a pressure level gauge, a radar level gauge, or the like. The level gauge 4 in this embodiment 1 is a magnetic float level gauge. The measuring device of the magnetic float level gauge 4 for measuring the liquid level is positioned inside the medicine box 1, and the reading device of the magnetic float level gauge for displaying the liquid level in the medicine box 1 is positioned outside the medicine box 1.
Fig. 4 is a schematic view of the connection relationship between the fuel additive adding device of the steam injection boiler and the steam injection boiler according to embodiment 1 of the present invention. As shown in fig. 4, there is a fuel pipe 8 at the inlet of the furnace 10, and the fuel pipe 8 is connected to a fuel nozzle 9 capable of atomizing liquid fuel. The other end of the connecting pipe 5 is connected with a fuel pipe 8 of the steam injection boiler. The fuel additive is naturally mixed with the fuel in the fuel line 8 through the connecting line 5 and is sprayed out through the fuel nozzle 9. The wind energy generated by the blower drives the fuel sprayed from the fuel nozzle 9 to mix into the hearth 10, and then the fuel is combusted in the hearth 10.
In the fuel additive feeding apparatus for a steam injection boiler according to embodiment 1, a fuel additive and a diluent are mixed in a medicine tank 1, and are sufficiently diluted and mixed after being stirred by a stirrer 3. The proportioning pump 2 sets the output quantity of the fuel additive in unit time according to the addition ratio of the fuel additive and the fuel, and conveys the fuel additive to steam injection boiler equipment, so that the fuel additive and the fuel are uniformly mixed according to the set proportion.
Example 2 is an example of a second steam injection boiler fuel additive adding device provided by the invention. Fig. 5 shows the structure of the fuel additive adding device for a steam injection boiler and the connection relationship of the components in embodiment 2 of the invention. As shown in fig. 5, the structure and the connection relationship of the components of the fuel additive adding device for a steam injection boiler provided in embodiment 2 of the present invention are the same as those of embodiment 1, except that the fuel additive adding device for a steam injection boiler further includes an atomizing device 6, wherein:
the atomization device 6 can be used for atomizing fuel additives, and the structure of the atomization device 6 comprises an input end for inputting the fuel additives and an output end for spraying the fuel additives. The 6 input ends of the atomization devices are connected with the output port 202 of the proportional pump 2 through the connecting pipeline 5, and the output ends of the atomization devices 6 are connected with the air outlet pipeline of the air blower of the steam injection boiler.
The connection mode of the other end of the connecting hose 5 and the input end of the atomization device 6 can be realized by the following modes:
the second end of the connecting hose 5 is connected with the input end of the atomization device 6 through a quick connector.
The quick connector is a connector which can realize the connection or disconnection of the pipeline without an external tool. The quick coupling used in this embodiment 1 may be a gas-liquid common quick coupling, or may be a quick coupling for oil pressure.
The atomizing device 6 according to embodiment 2 may be an annular atomizer. Fig. 6 is a schematic structural view of the ring type atomizer, which includes an input end 601 connected to the other end of the connection pipe 5 for inputting a fuel additive, a nozzle 602 of a ring-shaped hollow structure communicating with the input end 601, and nozzles 603 for ejecting the fuel additive arranged at equal intervals on the inner side wall of the nozzle 602, as shown in fig. 6. The fuel additive is atomized by the nozzle 603 of the annular atomizer. The nozzle 603 may be adjustable in orifice size to adjust the atomization effect. The atomizing device 6 used in embodiment 2 is an annular atomizer. The shape of the nozzle 602 of the annular sprayer can be selected to be rectangular or cylindrical according to the actual situation of the inlet of the hearth 10.
The connection pipe described in the above embodiment 2 may be a connection hose.
The medicine box 1 described in embodiment 2 above may further include the drain 3 described in embodiment 1, the drain 103 being used for cleaning the medicine box 1 and discharging the remaining fuel additive.
The steam injection boiler fuel additive adding apparatus according to embodiment 2 may further include the liquid level meter 4 according to embodiment 1, and the liquid level meter 4 may be configured to monitor the liquid level in the medicine tank 1.
Fig. 7 is a schematic view of the structure and connection relationship of the fuel additive adding device of the steam injection boiler, which is provided with the sewage draining outlet 3 and the liquid level meter 4, according to the embodiment 2 of the invention.
Fig. 8 is a schematic view showing the connection relationship between the fuel additive adding device of the steam injection boiler and the steam injection boiler according to embodiment 2 of the present invention. As shown in fig. 8, the fuel additive with a fixed output is atomized by the atomizing device 6, and then brought into the inlet of the furnace 10 by the wind energy generated by the blower, and mixed with the fuel sprayed from the fuel nozzle 9 to enter the furnace 10 for combustion.
In the fuel additive adding device for the steam injection boiler provided by the embodiment 2 of the invention, the proportional pump 2 quantitatively outputs the fuel additive according to the mixing ratio of the fuel additive and the fuel, and the quantitatively output fuel additive is atomized by the atomizing device 6 and then mixed with the fuel atomized by the fuel nozzle 9, so that the mixing degree of the fuel additive and the fuel is further improved and the use efficiency of the fuel additive is improved in the process of realizing the uniform mixing of the fuel additive and the fuel.
The present invention provides a combustion system of a steam injection boiler including any one of the fuel additive adding devices of the steam injection boilers provided in embodiments 1 and 2. Fig. 9 is a schematic view of the structure of the combustion system of the steam injection boiler. As shown in fig. 9, the combustion system of the steam injection boiler includes a blower unit, a fuel supply unit, a boiler combustion unit, and a fuel additive adding unit. Wherein,
the blower device can be used for providing wind energy and feeding fuel into the combustion device of the steam injection boiler;
the fuel supply device can be used for supplying fuel required by the boiler combustion device;
the boiler combustion device can be used for providing a combustion space of fuel and outputting energy generated by combustion;
the fuel additive adding device can be used for outputting the fuel additive to be uniformly mixed with the fuel.
The fuel additive adding device comprises a medicine chest, a proportioning pump, a stirrer and a connecting pipeline, wherein:
the medicine box is of a box body structure and is used for containing fuel additives and diluents, the medicine box comprises a medicine adding port and a medicine outlet, the medicine adding port is used for adding the fuel additives and the diluents, and the medicine outlet is used for outputting the fuel additives;
the proportional pump is used for adjusting the output quantity of the fuel additive in the medicine box in unit time, and comprises an input port and an output port, and the input port of the proportional pump is connected with the medicine outlet of the medicine box; the output port of the proportioning pump is connected with a pipeline and is used for outputting the fuel additive to a steam injection boiler through the pipeline to be mixed with the fuel;
the stirrer is used for stirring the fuel additive and the diluent; the stirrer comprises a control part, a connecting shaft and blades which are connected in sequence; the top of the medicine box is also provided with an opening, and the stirrer passes through the opening arranged at the top of the medicine box; the control part is positioned outside the medicine box and is fixedly connected with the medicine box at an opening at the top of the medicine box; blades and a connecting shaft of the stirrer are positioned on the inner side of the medicine chest;
the connecting pipeline is used for connecting the proportional pump and the steam injection boiler, one end of the connecting pipeline is connected with an output port of the proportional pump, and the other end of the connecting pipeline is connected with the steam injection boiler.
The fuel additive adding device in the combustion system of the steam injection boiler can be any one of the fuel additive adding devices of the steam injection boiler provided in the embodiment 1 and the embodiment 2 of the invention.
The invention provides a fuel additive adding method, which comprises the following steps:
s1: the fuel additive is mixed with the diluent in the medicine-chest container.
The amount of fuel additive required to be used is first determined. The specific calculation can be carried out according to the mixing ratio of the fuel additive and the fuel and the existing fuel.
The fuel additive is then diluted to reduce the concentration of the fuel additive or to dissolve the solid additive. The fuel additive is in solid particle shape or powder shape or liquid state, and the mixing degree of the fuel additive and the fuel can be improved by mixing the fuel additive and the fuel after the fuel additive is diluted. The specific mixing method of the fuel additive and the diluent may be natural settling mixing of the fuel additive and the diluent in the medicine-box container, or stirring and mixing of the fuel additive and the diluent in the medicine-box container by a stirring device. The fuel additive and diluent are typically thoroughly mixed by stirring for 2 to 3 hours.
The medicine-box container is a vessel for containing fuel additives and diluents.
A common diluent is gasoline or diesel fuel at 65 to 85 degrees celsius.
A liquid level meter may be provided in the medicine box container for monitoring a liquid level condition of the medicine box.
After the usage amount of the fuel additive is determined, the fuel additive and the diluent are stirred and mixed in a medicine-box container according to a certain proportion to obtain the diluted fuel additive.
S2: the medicine-box container quantitatively adds the diluted fuel additive to the fuel according to the addition ratio of the fuel additive to the fuel, wherein the addition amount L of the fuel additive to the fuel per unit time is as follows:
l ═ K (1+ P)/(H ×) where L represents the amount of fuel additive added to the fuel per unit time, M represents the amount of fuel, K represents the mixing ratio of fuel additive to fuel, H represents the fuel consumption time, and P represents the mixing ratio of fuel additive to diluent.
The diluted fuel additive is quantitatively output from the medicine-box container according to the addition ratio of the fuel additive to the fuel. The addition ratio of fuel additive to fuel may be based on the specification for the fuel additive. The specific implementation method comprises the following steps: the fuel M is burnt in H hours, and the adding ratio of the fuel additive to the fuel is K, so that the fuel additive M and K are needed together. The mixing ratio of the fuel additive and the diluent is P, and the total diluent (M × K)/P is calculated. At this time, the total amount of diluent and fuel additive is (M × K) (1+ P)/P. The amount of fuel additive added to the fuel per unit time, L, is calculated from the above:
L＝(M*K)(1+P)/(H*P)。
typically, the amount of fuel additive may be omitted because the amount of fuel additive relative to the diluent is small. Thus, ignoring the amount of fuel additive itself, the amount of fuel additive added to the fuel per unit time is:
L＝(M*K)/(H*P)。
the output per unit time of the diluted fuel in the medicine-box container after the additive is added is calculated according to the adding ratio of the fuel additive and the fuel, and the diluted fuel is quantitatively added into the fuel and is uniformly mixed with the fuel. The blower device brings the fuel mixed with the fuel additive into the hearth for combustion. The hearth is a three-dimensional space for fuel combustion.
The fuel additive with the quantitative output can be atomized and then mixed with the fuel. The atomized fuel additive particles become smaller, the whole surface area is increased, the fuel additive can be well and uniformly mixed with fuel, and the use efficiency of the fuel additive is improved. The atomization is to change the fuel additive into oil drops with small radius, increase the surface area of the fuel additive, and enable the fuel additive to be fully and uniformly mixed with the fuel and to be rapidly combusted.
Steam injection boiler plants are generally provided with a thermal efficiency detector, so that the atomization effect of the fuel additive can be controlled by observing the thermal efficiency variation of the boiler.
The fuel additive adding method realizes the quantification of the fuel additive according to the adding ratio of the fuel additive to the fuel, and the fuel additive is uniformly added into the fuel, so that the fuel additive and the fuel are uniformly mixed, and the combustion efficiency of the fuel is improved.
Example 3 is one example of the homogeneous addition of a fuel additive to a fuel using the method of the present invention.
24 tons of liquid fuel take 24 hours to burn off in the chamber of the injection boiler. The thermal efficiency of the boiler before the fuel additive was not used was 78%. The fuel additive used in this example 3 is a diesel fuel-saving agent. The fuel additive is solid powder, is bottled, and has a adding ratio of 70 g/ton to 70 g/ton, wherein each bottle contains 70 g of the fuel additive. From the above calculations, it was found that a total of 24 bottles of the fuel additive were required to burn off the 24 tons of liquid fuel. The fuel additive has no special requirement on the dilution ratio, and the solid powder is melted. In order to sufficiently mix the fuel additive and the fuel, the mixing ratio of the fuel additive and the diluent in the embodiment is as follows: bottle/10L, i.e. 70 g/10L. The diluent adopts diesel oil with the temperature of 70 ℃, so that 240 liters of diesel oil diluent is required. The fuel additive and diluent were stirred in a tank container for 2 hours to mix thoroughly. Since the 24-bottle fuel additive capacity is small compared to 240 liters of diesel diluent, the total capacity of the diluted fuel additive is considered to be 240 liters. The 24 tons of fuel are burnt out in 24 hours, namely 1 ton of fuel is consumed per hour, and 70 grams of fuel additive is consumed per hour according to the addition ratio of the fuel additive to the fuel. Since 240 liters of diluted fuel additive contained a total of 70 grams x 24 bottles of fuel additive, it was calculated that if 70 grams of fuel additive were added per hour, the diluted fuel additive delivered per unit time by the tank container was: 10 l/h. This value can also be calculated by directly substituting the formula L = (M × K)/(H × P), i.e., L = (24 ton × 70 g/ton)/(24H × 70 g/10L) = 10L/H. And then the diluted fuel additive quantitatively output by the medicine box container is atomized. In the present embodiment, when the boiler thermal efficiency detector detects that the thermal efficiency is improved by more than 5%, it is considered that a good atomization effect has been achieved. And finally, the atomized fuel additive is sent into a hearth through wind energy generated by a blower to be mixed with the fuel for combustion, so that the fuel additive is uniformly mixed with the fuel. Through experimental detection and evaluation, the thermal efficiency of the boiler is improved to 86% and 8% after the fuel additive is added by using the method disclosed by the invention.
The fuel additive adding method and the device provided by the invention can enable the fuel additive to be uniformly added into the fuel and be fully mixed with the fuel, thereby improving the burn-out rate of the fuel and further improving the thermal efficiency of the steam injection boiler.
Claims (5)
1. The utility model provides a steam injection boiler fuel additive adds device, its characterized in that, the device includes medical kit, proportioning pump, agitator, connecting tube, atomizing device, wherein:
the medicine box is of a box body structure and is used for containing fuel additives and diluents, and the medicine box comprises a medicine adding port and a medicine outlet; the dosing port is used for adding a fuel additive and a diluent, and the medicine outlet is used for outputting the fuel additive;
the proportional pump is used for adjusting the output quantity of the fuel additive in the medicine box in unit time, and comprises an input port and an output port, and the input port of the proportional pump is connected with the medicine outlet of the medicine box; the output port of the proportioning pump is connected with one end of the connecting pipeline and is used for outputting the fuel additive to the steam injection boiler through the connecting pipeline;
the stirrer is used for stirring the fuel additive and the diluent; the stirrer comprises a control part, a connecting shaft and blades which are connected in sequence; the top of the medicine box is also provided with an opening, and the stirrer passes through the opening arranged at the top of the medicine box; the control part is positioned outside the medicine box and is fixedly connected with the medicine box at an opening at the top of the medicine box; blades and a connecting shaft of the stirrer are positioned on the inner side of the medicine chest;
the connecting pipeline is used for connecting the proportional pump and the steam injection boiler, one end of the connecting pipeline is connected with an output port of the proportional pump, and the other end of the connecting pipeline is connected with the steam injection boiler;
the atomization device is used for atomizing the fuel additive; the atomizing device comprises an input end and an output end, the input end of the atomizing device is connected with the output port of the proportioning pump through a connecting pipeline, and the output end of the atomizing device is connected with an air outlet pipeline of an air blower of the steam injection boiler;
the atomizing device is an annular atomizer which comprises an input end for inputting fuel additives, an annular hollow structure spray head communicated with the input end, and spray nozzles arranged on the inner side wall of the spray head at equal intervals and used for spraying the fuel additives.
2. A fuel additive adding apparatus for a steam injection boiler according to claim 1, wherein said medicine chest further comprises a drain outlet for cleaning the medicine chest and removing residual fuel additive.
3. A steam injection boiler fuel additive adding device according to claim 1 or 2, characterized in that a medicine box of the steam injection boiler fuel additive adding device is further provided with a liquid level meter for monitoring the liquid level in the medicine box.
4. The steam injection boiler fuel additive adding device as set forth in claim 1 or 2, wherein said connecting pipe is a connecting hose.
5. A combustion system of a steam injection boiler comprises a blower device, a fuel supply device and a boiler combustion device, wherein,
the blower device is used for providing wind energy and bringing fuel into the combustion device of the steam injection boiler;
the fuel supply device is used for supplying fuel required by the boiler combustion device;
the boiler combustion device is used for providing a combustion space for fuel and outputting energy generated by combustion;
characterized in that the steam injection boiler combustion system further comprises a steam injection boiler fuel additive adding device according to any one of claims 1-4.
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| CN105435978B (en) * | 2016-01-20 | 2018-03-23 | 中国工程物理研究院化工材料研究所 | Shower nozzle for mixing plant |
| CN106482130A (en) * | 2016-12-13 | 2017-03-08 | 江苏帕斯玛环境科技有限公司 | Plasma liquid waste treatment system with efficient cooling system |
| CN106594759A (en) * | 2016-12-13 | 2017-04-26 | 江苏帕斯玛环境科技有限公司 | High-risk waste liquid treatment process |
| CN106745417A (en) * | 2016-12-13 | 2017-05-31 | 江苏帕斯玛环境科技有限公司 | Liquid waste treatment system |
| CN106477664A (en) * | 2016-12-13 | 2017-03-08 | 江苏帕斯玛环境科技有限公司 | Cracking structure |
| CN106482128A (en) * | 2016-12-13 | 2017-03-08 | 江苏帕斯玛环境科技有限公司 | Distributing device for the high-risk discarded object of corona treatment |
| CN106964269A (en) * | 2017-03-29 | 2017-07-21 | 湘潭正宇节能科技有限公司 | A kind of fuel oil additive mixing adding set |
| CN112138586A (en) * | 2020-09-29 | 2020-12-29 | 杨建民 | Developing solution fixed-proportion dilution equipment for plate making |
| CN112483891B (en) * | 2020-11-30 | 2022-07-22 | 河南职业技术学院 | Device for adding additive into high-pressure gas container |
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