High-pressure reaction system and feeding and discharging process for efficient energy recovery
阅读说明：本技术 一种高压反应系统及高效能量回收的进出料工艺 (High-pressure reaction system and feeding and discharging process for efficient energy recovery ) 是由 吴海霞 张培杰 杨志军 于 2019-09-09 设计创作，主要内容包括：本发明涉及一种高压反应系统,其包括高压反应器,设置有第一进料口和液相出料口；进料缸,其包括设置有第一阀门的进料缸进料口,与所述第一进料口连接的进料缸出料口,所述第一进料口和进料缸出料口之间设置有第二阀门；出料缸,其包括与所述液相出料口连接的第二出料口以及设置有第四阀门的出料缸出料口；所述液相出料口和第二出料口之间设置有第三阀门；以及油压泵,与进料缸连接,本发明对进料缸和出料缸相关阀门进行科学的布局设置。本发明还提供了一种高压反应系统的高效能量回收的进出料工艺,在油压泵提供的压力辅助下,实现间歇进料排料或者连续进排料,既能充分利用能源又能降低系统内物料流通的速率,降低电力消耗。(The invention relates to a high-pressure reaction system, which comprises a high-pressure reactor, a first feeding hole and a liquid phase discharging hole, wherein the first feeding hole and the liquid phase discharging hole are formed in the high-pressure reactor; the feeding cylinder comprises a feeding cylinder feeding hole provided with a first valve and a feeding cylinder discharging hole connected with the first feeding hole, and a second valve is arranged between the first feeding hole and the feeding cylinder discharging hole; the discharging cylinder comprises a second discharging hole connected with the liquid-phase discharging hole and a discharging hole of the discharging cylinder provided with a fourth valve; a third valve is arranged between the liquid phase discharge port and the second discharge port; the invention carries out scientific layout arrangement on the relevant valves of the feeding cylinder and the discharging cylinder. The invention also provides a feeding and discharging process for high-efficiency energy recovery of the high-pressure reaction system, which realizes intermittent feeding and discharging or continuous feeding and discharging under the assistance of the pressure provided by the oil pressure pump, and not only can fully utilize energy, but also can reduce the material circulation rate in the system and reduce the power consumption.)
1. A high pressure reaction system, comprising:
the high-pressure reactor is provided with a first feeding hole (3) and a liquid phase discharging hole (2);
the feeding cylinder comprises a feeding cylinder feeding hole (4) provided with a first valve (6) and a feeding cylinder discharging hole (5) connected with the first feeding hole (3), and a second valve (8) is arranged between the first feeding hole (3) and the feeding cylinder discharging hole (5);
the discharging cylinder comprises a second discharging hole (10) connected with the liquid-phase discharging hole (2) and a discharging hole (11) of the discharging cylinder, and the discharging hole is provided with a fourth valve (12); a third valve (13) is arranged between the liquid phase discharge hole (2) and the second discharge hole (10);
and an oil pressure pump (15) connected to the feed cylinder.
2. A high pressure reaction system according to claim 1, wherein: and a heat exchanger (14) is arranged between the liquid phase discharge hole (2) and the second discharge hole (10).
3. A high pressure reaction system according to claim 2, wherein: the third valve (13) is positioned between the heat exchanger (14) and the second discharge hole (10).
4. A high pressure reaction system according to claim 2, wherein: the heat exchanger (14) is also provided with a steam outlet and a water inlet.
5. A high pressure reaction system according to claim 1, wherein: the high-pressure reactor is also provided with a gas phase discharge hole (1).
6. A high pressure reaction system according to claim 1, wherein: the feeding cylinder and the discharging cylinder are both air cylinders or hydraulic cylinders.
7. A high-pressure reactor system according to claim 1, wherein a feed cylinder, a discharge cylinder and an oil hydraulic pump 15 connected to the feed cylinder are provided as one set of feeding and discharging means, and a high-pressure reactor is connected to each of the two sets of feeding and discharging means.
8. A high efficiency energy recovery feed and discharge process based on the high pressure reaction system of claim 1, characterized in that: which comprises the following steps;
(1) the first valve (6) is opened, the second valve (8) is closed, the third valve (13) is closed, the fourth valve (12) is opened, the feeding cylinder starts feeding, unreacted materials are conveyed into the feeding cylinder through the first valve (6), meanwhile, the discharging cylinder starts discharging, the materials which are completely reacted through the high-pressure reactor are output, finally, the feeding cylinder is filled with the materials to be reacted, and the discharging cylinder empties the materials which are completely reacted;
(2) after the discharging of the discharging cylinder is finished and the feeding of the feeding cylinder is finished, the first valve (6) is closed, the second valve (8) is opened, the third valve (13) is opened, and the fourth valve (12) is closed; opening an oil pressure pump (15), under the assistance of pressure provided by the oil pressure pump (15) and the driving of the pressure difference and the energy difference of the whole system, feeding the materials to be reacted in a feeding cylinder into a high-pressure reactor for reaction, and simultaneously feeding the materials after the reaction in the high-pressure reactor into a discharging cylinder;
(3) and (3) repeating the steps (1) and (2), continuously emptying and filling the feeding cylinder, and emptying the discharging cylinder along with filling, so as to realize intermittent feeding and discharging.
9. A high-efficiency energy-recovery feed and discharge process based on the high-pressure reaction system of claim 7, characterized in that: the two groups of feeding and discharging devices are respectively a first group of feeding and discharging devices and a second group of feeding and discharging devices, the first group of feeding and discharging devices and the second group of feeding and discharging devices are respectively carried out according to the following steps, and the feeding cylinders of the first group of feeding and discharging devices and the discharging cylinders of the second group of feeding and discharging devices feed materials when the feeding cylinders of the first group of feeding and discharging devices and the discharging cylinders of the first group of feeding and discharging devices discharge materials when the discharging cylinders of the first group of feeding and discharging devices discharge materials by setting the opening and closing time of the first valves (6), the second valves (8), the third valves (13) and the fourth valves (12);
(1) the first valve (6) is opened, the second valve (8) is closed, the third valve (13) is closed, the fourth valve (12) is opened, the feeding cylinder starts feeding, unreacted materials are conveyed into the feeding cylinder through the first valve (6), meanwhile, the discharging cylinder starts discharging, the materials which are completely reacted through the high-pressure reactor are output, finally, the feeding cylinder is filled with the materials to be reacted, and the discharging cylinder empties the materials which are completely reacted;
(2) after the discharging of the discharging cylinder is finished and the feeding of the feeding cylinder is finished, the first valve (6) is closed, the second valve (8) is opened, the third valve (13) is opened, and the fourth valve (12) is closed; opening an oil pressure pump (15), under the assistance of pressure provided by the oil pressure pump (15) and the driving of the pressure difference and the energy difference of the whole system, feeding the materials to be reacted in a feeding cylinder into a high-pressure reactor for reaction, and simultaneously feeding the materials after the reaction in the high-pressure reactor into a discharging cylinder;
(3) and (3) repeating the steps (1) and (2), wherein the feeding cylinder is continuously emptied and filled, and the discharging cylinder is emptied along with the filling.
10. The energy efficient recovery feed and discharge process of claim 9, wherein: the first group of feeding and discharging devices performs the step (1) at the same time as the second group of feeding and discharging devices performs the step (2).
Technical Field
The invention relates to the technical field of high-pressure reaction equipment and feeding and discharging processes, in particular to a high-pressure reaction system and a feeding and discharging process for efficient energy recovery.
Background
The high-pressure reaction system and the high-pressure process equipment are equipment widely applied to chemical reaction in the fields of industrial production and scientific experiments such as metallurgy, chemical engineering and the like, such as coal refining, supercritical water coal gasification, petroleum refining, high-pressure osmosis and reverse osmosis, environment-friendly supercritical water garbage treatment, chemical synthesis, hydrothermal synthesis, plant straw gas making and the like, and specifically, a coal-to-oil reactor is applied under 20-30MPa, a refining hydrogenation high-pressure process is applied under 20MPa, medium-pressure hydrogenation is applied under 7-8MPa, supercritical water extraction is applied under 20-30MPa, supercritical water coal gasification is applied under 20-30MPa, a coal-to-oil reactor is applied under 20-30MPa and the like.
The existing high-pressure reaction system mostly adopts a regulating valve for discharging and regulating liquid level, and the existing production process of charging and discharging is to charge and discharge under high pressure difference, so that the valve is seriously abraded, the service life is short, the discharging energy is completely lost, and a large amount of power consumption is generated.
Disclosure of Invention
The invention aims to provide a high-pressure reaction system and a feeding and discharging process for efficient energy recovery, which can fully utilize the recovered energy to discharge materials and avoid the abrasion of a valve in the feeding and discharging process.
In order to achieve the purpose, the technical scheme of the invention comprises the following steps: the present invention provides a high pressure reaction system comprising:
the high-pressure reactor is provided with a first feeding hole and a liquid phase discharging hole;
the feeding cylinder comprises a feeding cylinder feeding hole provided with a first valve and a feeding cylinder discharging hole connected with the
the discharging cylinder comprises a second discharging hole connected with the liquid-phase discharging hole and a discharging hole of the discharging cylinder provided with a fourth valve; a third valve is arranged between the liquid phase discharge port and the second discharge port;
and the oil pressure pump is connected with the feeding cylinder.
Further, a heat exchanger is arranged between the liquid phase discharge port and the second discharge port.
Further, the third valve is located between the heat exchanger and the second discharge hole.
Furthermore, the heat exchanger is also provided with a steam outlet and a water inlet.
Further, the high-pressure reactor is also provided with a gas-phase discharge hole.
Further, the feeding cylinder and the discharging cylinder are both air cylinders or hydraulic cylinders.
Furthermore, a feeding cylinder, a discharging cylinder and an
The invention also provides a feeding and discharging process for high-efficiency energy recovery based on the high-pressure reaction system, which comprises the following steps;
(1) the first valve is opened, the second valve is closed, the third valve is closed, the fourth valve is opened, the feeding cylinder starts feeding, unreacted materials are conveyed into the feeding cylinder through the first valve, meanwhile, the discharging cylinder starts discharging, the materials which are completely reacted through the high-pressure reactor are output, finally, the feeding cylinder is filled with the materials to be reacted, and the discharging cylinder empties the materials which are completely reacted;
(2) after the discharging of the discharging cylinder is finished and the feeding of the feeding cylinder is finished, the first valve is closed, the second valve is opened, the third valve is opened, and the fourth valve is closed; opening the oil pressure pump, under the pressure assistance provided by the oil pressure pump and the driving of the pressure difference and the energy difference of the whole system, feeding the materials to be reacted in the feeding cylinder into the high-pressure reactor for reaction, and simultaneously feeding the materials after the reaction in the high-pressure reactor into the discharging cylinder;
(3) and (3) repeating the steps (1) and (2), continuously emptying and filling the feeding cylinder, and emptying the discharging cylinder along with filling, so as to realize intermittent feeding and discharging.
Furthermore, the two groups of feeding and discharging devices are respectively a first group of feeding and discharging devices and a second group of feeding and discharging devices, the first group of feeding and discharging devices and the second group of feeding and discharging devices are respectively carried out according to the following steps, and the feeding cylinders of the first group of feeding and discharging devices are enabled to feed when the feeding cylinders of the first group of feeding and discharging devices are in feeding, the feeding cylinders of the second group of feeding and discharging devices are in discharging, and the discharging cylinders of the second group of feeding and discharging devices are enabled to feed when the discharging cylinders of the first group of feeding and discharging devices are in discharging;
(1) the first valve is opened, the second valve is closed, the third valve is closed, the fourth valve is opened, the feeding cylinder starts feeding, unreacted materials are conveyed into the feeding cylinder through the first valve, meanwhile, the discharging cylinder starts discharging, the materials which are completely reacted through the high-pressure reactor are output, finally, the feeding cylinder is filled with the materials to be reacted, and the discharging cylinder empties the materials which are completely reacted;
(2) after the discharging of the discharging cylinder is finished and the feeding of the feeding cylinder is finished, the first valve is closed, the second valve is opened, the third valve is opened, and the fourth valve is closed; opening the oil pressure pump, under the pressure assistance provided by the oil pressure pump and the driving of the pressure difference and the energy difference of the whole system, feeding the materials to be reacted in the feeding cylinder into the high-pressure reactor for reaction, and simultaneously feeding the materials after the reaction in the high-pressure reactor into the discharging cylinder;
(3) repeating the steps (1) and (2), wherein the feeding cylinder is continuously emptied and filled, the discharging cylinder is continuously emptied along with the filling, namely the material in the feeding cylinder is continuously emptied and filled, and the material in the discharging cylinder is continuously emptied and filled along with the filling;
further, the first group of feeding and discharging devices performs the step (1) at the same time as the second group of feeding and discharging devices performs the step (2).
The invention has the following positive effects:
the invention realizes intermittent feeding and discharging or continuous feeding and discharging by reasonably arranging the relevant valves of the feeding cylinder and the discharging cylinder, utilizing the pressure difference of the system and mainly utilizing the pressure difference and the energy difference of the whole system under the pressure assistance provided by the oil hydraulic pump, thereby not only fully utilizing energy, but also reducing the material circulation rate in the system and reducing the power consumption. The method comprises the following specific steps:
1. strong high differential pressure valve abrasion is avoided;
2. a large amount of energy is recovered without a large investment in energy recovery equipment;
3. a large amount of power consumption is saved.
4. High-speed fluid is not generated in the discharge pipeline and the valve.
Drawings
FIG. 1 is a schematic view of the present invention in an operating state one;
FIG. 2 is a schematic view of the present invention in the second operating state;
FIG. 3 is a schematic structural view of example 2 of the present invention;
in the attached drawing, a gas
Detailed Description
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