CN111151020A - Mixed gas-liquid mixing vaporizer - Google Patents
Mixed gas-liquid mixing vaporizer Download PDFInfo
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- CN111151020A CN111151020A CN201811317085.0A CN201811317085A CN111151020A CN 111151020 A CN111151020 A CN 111151020A CN 201811317085 A CN201811317085 A CN 201811317085A CN 111151020 A CN111151020 A CN 111151020A
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- B01D1/16—Evaporating by spraying
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Abstract
A mixed gas-liquid mixing vaporizer comprises a heater; the raw material gas inlet of the vaporization tower is connected with a raw material gas source through a pipeline; the preheated liquid inlet of the vaporization tower is connected to the preheated liquid outlet of the heater through a pipeline; the liquid outlet of the vaporization tower is connected to the liquid inlet of the heater through a circulating pump; a plurality of atomizing nozzles, a corrugated structured packing layer and a liquid baffle plate are sequentially arranged in the vaporization tower from top to bottom; a liquid level meter is arranged at the lower part of the vaporization tower; and the liquid level meter and the circulating pump are respectively and electrically connected with the controller. The vaporization device provided by the invention greatly improves the vaporization effect of the raw material liquid, ensures that the raw material liquid and the raw material gas are fully mixed and vaporized, reduces the harm of the liquid carried by the gas to the solid catalyst, and ensures the long-period stable operation of a subsequent reaction device.
Description
Technical Field
The invention relates to a processing device for vaporizing raw material liquid applied to the industries of petroleum, natural gas, chemical industry and the like, in particular to a mixed gas-liquid mixed vaporizing device, and more particularly relates to a vaporizing device for mixing the raw material liquid after being completely vaporized with the raw material gas.
Background
In petroleum, natural gas and petrochemical industry devices, a raw material heating device is often used, only a heat exchanger is singly used for preheating under the conventional condition, raw materials cannot be vaporized, raw material liquid directly enters a reaction system in a liquid form, and the liquid fatally damages a solid catalyst. At present, a common floating head type heat exchanger commonly adopted in China and inside and outside is preheated, liquid can not be vaporized in one step, the purpose of vaporization can be achieved only through multi-stage heat exchange, the heat exchanger is easy to generate liquid impact phenomenon due to gas-liquid mixing, and the heat exchanger is easy to leak during operation, so that stable operation of production is influenced.
Chinese patent CN201020686771.8 discloses a liquid raw material preheating device, which comprises an air compressor, a buffer tank, a vacuum pump, a storage tank and a gate, wherein the air compressor is connected with an input end pipeline at one side of the buffer tank, an output end at the other side of the buffer tank is connected with a pipeline at the top of the storage tank, and the pipeline is provided with the gate; the vacuum pump is connected with a pipeline at the top of the storage tank; the outside of storage tank is equipped with steam input pipeline and steam output pipeline, and the top and the bottom of storage tank are equipped with charge-in pipeline and ejection of compact pipeline respectively.
The raw material preheating device disclosed in the above-mentioned chinese patent can only achieve the effect of preheating the raw material, and cannot meet the requirement of complete vaporization of the mixture of the raw material gas and the liquid because the effect of vaporizing the raw material liquid cannot be achieved by simple heat exchange, thereby causing fatal damage to the solid catalyst in the subsequent synthesis device.
Disclosure of Invention
The invention aims to solve the technical problem of providing a multi-structure mixed gas-liquid mixing and vaporizing device, which greatly improves the vaporization effect of raw material liquid, ensures that the raw material liquid and the raw material gas are fully mixed and vaporized, reduces the harm of the liquid carried by the gas to a solid catalyst, and ensures the long-period stable operation of a subsequent reaction device. Meanwhile, an internal circulation is established in the vaporizing device, so that the kinetic energy consumption and the heat consumption caused by the return of the system to the tank area are reduced, and the construction investment is reduced. The vaporizer can ensure the complete mixing of raw material gas and liquid and the normal operation of the catalytic synthesis system.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the invention provides a mixed gas-liquid mixing and vaporizing device, which comprises a heater, a liquid inlet, a mixed liquid outlet and a mixed liquid outlet, wherein the heater is respectively provided with a heating medium inlet and a corresponding condensate outlet after the heating medium is condensed; the heating medium inlet of the heater is connected with a heating medium source through a pipeline; the liquid inlet of the heater is connected with a liquid raw material source through a pipeline; the top and the bottom of the vaporization tower are respectively provided with a mixed gas outlet and a liquid outlet, and the upper part and the lower part of the vaporization tower are respectively provided with a preheated liquid inlet and a raw material gas inlet; a raw material gas inlet of the vaporization tower is connected with a raw material gas source through a pipeline; the preheated liquid inlet of the vaporization tower is connected to the preheated liquid outlet of the heater through a pipeline; the liquid outlet of the vaporization tower is connected to the liquid inlet of the heater through a circulating pump; a plurality of atomizing nozzles, a corrugated structured packing layer and a liquid baffle plate are sequentially arranged in the vaporization tower from top to bottom; the plurality of atomizing nozzles are communicated with the preheating liquid inlet of the vaporization tower, the liquid baffle plate is arranged at the lower part of the vaporization tower and comprises a plate body and a plurality of liquid baffle plates vertically fixed on the plate body, and the plate body is provided with a plurality of liquid through holes; the raw material gas inlet of the vaporization tower is arranged on the tower wall corresponding to the gap between the corrugated structured packing layer and the liquid baffle plate; a liquid level meter is arranged at the lower part of the vaporization tower; and the liquid level meter and the circulating pump are respectively and electrically connected with the controller.
Further, the circulating pump is a variable frequency pump.
In the vaporizer provided by the invention, a liquid raw material is heated by a heater and then enters a plurality of atomizing nozzles communicated with a preheated liquid inlet in a vaporizing tower, the preheated liquid in the atomizing nozzles is pressurized by a circulating pump to achieve an atomizing effect, a part of atomized solution sinks into a corrugated structured packing layer by self gravity, a raw material gas enters the vaporizing tower from the lower part of the packing layer and rises into the packing layer, so that the atomized liquid and the raw material gas are fully contacted in the packing layer, namely the atomized liquid is fully vaporized to obtain a vaporized raw material liquid and raw material gas mixture, and the vaporized mixture rises to the top of the tower and then enters a synthesis process through a mixed gas outlet; the other part of the atomized solution is mixed and vaporized with the raw material gas rising from the lower part of the vaporization tower in the top of the vaporization tower and then enters the synthesis process.
Practice tests prove that the atomized solution enters a filler layer in the vaporization tower, wherein at least 95 percent of the atomized solution can be mixed with the feed gas and completely vaporized in the filler layer, the rest liquid with the concentration less than or equal to 5 percent is not vaporized, the part of unvaporized liquid falls into the bottom of the vaporization tower, and the liquid at the bottom of the vaporization tower is circularly conveyed to a heater by an internal circulating pump for repeated heating vaporization, so that the raw material liquid is circularly used in the vaporization system, the power consumption is saved, and the heat loss is reduced.
The invention can set the circulating pump as a variable frequency pump, the liquid raw material which is not vaporized is accumulated at the bottom of the vaporization tower, after a certain liquid level is accumulated in the vaporization tower, the liquid level meter at the lower part of the vaporization tower sends the detected liquid level information to the controller, and the controller controls the rotating speed of the circulating pump according to the received liquid level information in the vaporization tower, thereby realizing the stable operation of the system.
In order to ensure the fluctuation caused by gas-liquid exchange in the vaporization tower, the bottom of the vaporization tower is additionally provided with the liquid baffle plate, the plate body of the liquid baffle plate is welded on the inner wall of the vaporization tower, and the liquid baffle plate is vertically fixed at the lower end of the plate body, so that the stability of bottom liquid is ensured, and the occurrence of safety accidents caused by gas inflow of a circulating pump is ensured.
The invention has the beneficial effects that:
the heating medium of the heater can be selected according to the vaporization point of the raw material, and the degree of freedom is high; an atomization nozzle is arranged in the vaporization tower to effectively atomize the raw material liquid; the corrugated packing is arranged to ensure that the atomized raw material liquid and the raw material gas carry out effective mass and heat transfer so as to achieve the purpose of full mixing and vaporization; the liquid stabilizing plate is arranged, so that the raw material liquid at the bottom of the vaporization tower is stable, the circulating pump is prevented from carrying gas to cause equipment damage, the stable operation of the circulating pump is also ensured, and automatic control can be realized; the raw material liquid which is not vaporized at the bottom of the vaporization tower can be recycled by the circulating pump, so that the energy loss caused by pressure reduction and temperature reduction is reduced.
The vaporization device provided by the invention can vaporize all raw material liquid, and ensures the stable operation of the gas catalyst in the subsequent synthesis process; the liquid which is not vaporized circulates in the system through a circulating pump, so that the kinetic energy loss is reduced, most of the consumption can be saved, the investment of a return pipeline is reduced, and the danger of high pressure channeling and low pressure channeling is avoided; the liquid without vaporization keeps the internal temperature of the existing vaporization tower in the vaporization tower, so that the step of returning the liquid to the intermediate tank area through cooling is omitted, pressure reduction and cooling are not needed, and a large amount of heat energy can be saved.
Drawings
Fig. 1 is a schematic view of a vaporization apparatus according to an embodiment of the present invention.
Detailed Description
The invention is further illustrated by the following examples and figures.
As shown in fig. 1, the present invention provides a mixed gas-liquid mixing vaporizer, which comprises a heater 1, a liquid inlet 13 and a preheated liquid outlet 14, wherein the heater 1 is provided with a heating medium inlet 11 and a corresponding condensed liquid outlet 12 for condensing a heating medium, and the liquid inlet 13 and the corresponding preheated liquid outlet 14 for preheating liquid; the heating medium inlet 11 of the heater 1 is connected with a heating medium source through a pipeline; the liquid inlet 13 of the heater 1 is connected with a liquid raw material source through a pipeline; the top and the bottom of the vaporization tower 2 are respectively provided with a mixed gas outlet 21 and a liquid outlet 22, and the upper part and the lower part of the vaporization tower 2 are respectively provided with a preheated liquid inlet 23 and a raw material gas inlet 24; a raw material gas inlet 24 of the vaporization tower 2 is connected with a raw material gas source through a pipeline; the preheated liquid inlet 23 of the vaporization tower 2 is connected to the preheated liquid outlet 14 of the heater 1 by a pipe; the liquid outlet 22 of the vaporization tower 2 is connected to the liquid inlet 13 of the heater 1 through a circulation pump 3; a plurality of atomizing nozzles 25, a corrugated structured packing layer 26 and a liquid baffle plate 27 are sequentially arranged in the vaporization tower 2 from top to bottom; the plurality of atomizing nozzles 25 are communicated with the preheating liquid inlet 23 of the vaporization tower 2, the liquid baffle plate 27 is arranged at the lower part of the vaporization tower 2, the liquid baffle plate 27 comprises a plate body 271 and a plurality of liquid baffle plates 272 which are vertically and downwardly fixed on the plate body 271, and a plurality of liquid through holes are arranged on the plate body 271; the raw material gas inlet 24 of the vaporization tower 2 is arranged on the tower wall corresponding to the gap between the corrugated structured packing layer 26 and the liquid baffle plate 27; the lower part of the vaporization tower 2 is also provided with a liquid level meter 4; and a controller (not marked in the figure), wherein the circulating pump 3 and the liquid level meter 4 are respectively and electrically connected with the controller.
Further, the circulation pump 3 in this embodiment is a variable frequency pump. The heating medium of the heater 1 in this embodiment is steam.
In the implementation of this embodiment, a liquid raw material enters the heater 1 through the liquid inlet 13 of the heater 1, is heated to a gas-liquid boundary temperature point of the liquid raw material under the working condition pressure, then enters the atomizer 25 at the upper part of the vaporization tower 2 through the preheated liquid outlet 14, the preheated raw material liquid is sprayed and atomized through the atomizer 25, the atomized raw material liquid flows downward from the upper part of the vaporization tower 2, the atomized raw material liquid and a raw material gas (the raw material gas enters the lower part of the vaporization tower 2 through the raw material gas inlet 24 below the packing layer, the raw material gas runs from bottom to top) perform mass and heat transfer in the packing layer 26 of the vaporization tower 2, and are fully mixed, and the mixed raw material gas enters the subsequent synthesis process through the mixed gas outlet 21 at the top of the vaporization tower 2 to perform synthesis. Raw material liquid which is not completely vaporized in the vaporization tower 2 is enriched in the bottom of the vaporization tower 2, the raw material liquid flows out from the bottom of the vaporization tower 2 after being enriched to a certain degree, the raw material liquid is mixed with the raw material liquid through a circulating pump 3 and then is pumped into a liquid inlet 13 of a heater 1, the raw material liquid can be recycled in the system, the circulating pump adopts frequency conversion control, a liquid level meter 4 at the lower part of the vaporization tower 2 sends detected liquid level information to a controller, the controller controls the operation of the circulating pump 3 according to the received liquid level information in the vaporization tower 2, when the liquid level of the raw material liquid which is not completely vaporized and stored at the bottom of the vaporization tower 2 is higher than an upper limit, the controller increases the rotating speed of the circulating pump 3, the raw material liquid which is not completely vaporized is quickly conveyed to the heater 1 through the circulating pump 3, and when the liquid level of the raw material liquid which is, the raw material liquid is slowly conveyed to the heater 1, and the stable operation of the system is realized.
In the embodiment, the liquid raw materials which are not vaporized in the whole process are returned to the middle storage tank area after being cooled and depressurized, so that kinetic energy and heat energy are wasted, and the stable operation of the system is ensured. The heater 1 can be heated by steam, the steam enters the heater 1 from the heating medium inlet 11, and the heated condensate can return to the steam condensate system for recycling through the condensate outlet 12. Wherein the heating medium of the heater can be flexibly selected according to the vaporization point of the raw material liquid without any limitation, so that the liquid raw material in the synthesis can be fully preheated to meet the production requirement.
It should be noted that the above embodiments are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present invention are included in the protection scope of the present invention.
Claims (2)
1. A mixed gas-liquid mixing vaporizer is composed of a vaporizer,
the heater is provided with a heating medium inlet and a corresponding condensate outlet respectively, and is also provided with a liquid inlet and a corresponding preheated liquid outlet; the heating medium inlet of the heater is connected with a heating medium source through a pipeline; the liquid inlet of the heater is connected with a liquid raw material source through a pipeline;
the top and the bottom of the vaporization tower are respectively provided with a mixed gas outlet and a liquid outlet, and the upper part and the lower part of the vaporization tower are respectively provided with a preheated liquid inlet and a raw material gas inlet; a raw material gas inlet of the vaporization tower is connected with a raw material gas source through a pipeline; the preheated liquid inlet of the vaporization tower is connected to the preheated liquid outlet of the heater through a pipeline; the liquid outlet of the vaporization tower is connected to the liquid inlet of the heater through a circulating pump;
a plurality of atomizing nozzles, a corrugated structured packing layer and a liquid baffle plate are sequentially arranged in the vaporization tower from top to bottom; the plurality of atomizing nozzles are communicated with the preheating liquid inlet of the vaporization tower, the liquid baffle plate is arranged at the lower part of the vaporization tower and comprises a plate body and a plurality of liquid baffle plates vertically fixed on the plate body, and the plate body is provided with a plurality of liquid through holes; the raw material gas inlet of the vaporization tower is arranged on the tower wall corresponding to the gap between the corrugated structured packing layer and the liquid baffle plate; the lower part of the vaporization tower is also provided with a liquid level meter;
and the liquid level meter and the circulating pump are respectively and electrically connected with the controller.
2. The hybrid gas-liquid mixing vaporizer of claim 1, wherein the circulating pump is a variable frequency pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811317085.0A CN111151020A (en) | 2018-11-07 | 2018-11-07 | Mixed gas-liquid mixing vaporizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811317085.0A CN111151020A (en) | 2018-11-07 | 2018-11-07 | Mixed gas-liquid mixing vaporizer |
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| Publication Number | Publication Date |
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| CN111151020A true CN111151020A (en) | 2020-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811317085.0A Pending CN111151020A (en) | 2018-11-07 | 2018-11-07 | Mixed gas-liquid mixing vaporizer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112808478A (en) * | 2020-12-30 | 2021-05-18 | 浙江工业大学 | Device and method for synergistically enhancing double-fluid atomization performance |
| CN113698797A (en) * | 2021-09-05 | 2021-11-26 | 周华良 | Vaporization tower for producing carbon black by gas mixing |
-
2018
- 2018-11-07 CN CN201811317085.0A patent/CN111151020A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112808478A (en) * | 2020-12-30 | 2021-05-18 | 浙江工业大学 | Device and method for synergistically enhancing double-fluid atomization performance |
| CN113698797A (en) * | 2021-09-05 | 2021-11-26 | 周华良 | Vaporization tower for producing carbon black by gas mixing |
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