CN214734508U - Condensing type hydrocarbon converter system integrated with low-pressure combustible gas pressurizing and heating system - Google Patents

Condensing type hydrocarbon converter system integrated with low-pressure combustible gas pressurizing and heating system Download PDF

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CN214734508U
CN214734508U CN202120710357.4U CN202120710357U CN214734508U CN 214734508 U CN214734508 U CN 214734508U CN 202120710357 U CN202120710357 U CN 202120710357U CN 214734508 U CN214734508 U CN 214734508U
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preheating device
air preheating
condensing
combustible gas
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马雷
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Shanghai Fuwang Furnace Co ltd
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Shanghai Fuwang Furnace Co ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency
    • Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines

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Abstract

The utility model discloses a condensing hydrocarbon reformer system of integrated low pressure combustible gas pressure boost heating system, include: the device comprises a supercharger, a low-pressure combustible gas heating device, a conversion device, a heat exchange cooling device, a high-temperature air preheating device, a waste heat boiler device, a low-temperature air preheating device, a condensation type air preheating device, an air fan, a flue gas fan and a chimney, wherein the heat exchange cooling device comprises a raw material preheating device and/or a steam overheating device. In this way, the utility model discloses integrated low pressure combustible gas pressure boost heating system's condensing hydrocarbon converter system through the parallel heat transfer of multiunit equipment, can effectively reduce exhaust gas temperature, retrieves flue gas sensible heat and partial latent heat, and the increasing heat efficiency reduces high calorific value fuel consumption.

Description

Condensing type hydrocarbon converter system integrated with low-pressure combustible gas pressurizing and heating system
Technical Field
The utility model relates to a hydrocarbon hydrogen manufacturing conversion equipment field especially relates to an integrated low pressure combustible gas pressure boost heating system's condensing hydrocarbon converter system.
Background
The fuel for the hydrocarbon hydrogen-making reformer is generally high-heat-value high-pressure fuel gas (refinery gas or natural gas) and low-pressure low-heat-value desorption gas (desorption gas) from a pressure swing adsorption system. In normal operation, the stripping gas is the main fuel and the high pressure fuel gas is the supplementary fuel.
Because the calorific value (LHV) of the analyzed gas is very low (generally about 10000KJ/Nm3, and the conventional fuel gas is about 36000 KJ/Nm 3), the amount of the flue gas generated after combustion is much larger than that of the combustion-supporting air (the air amount is 70-80% of the flue gas amount).
Due to the requirements of energy conservation and emission reduction and stable and efficient combustion of the desorption gas, the combustion-supporting air is generally heated to 300-550 ℃ in two sections in the convection section of the converter. And because the flue gas quantity is much larger than the combustion air quantity and the specific heat capacity of the flue gas is larger than that of the air, the flue gas temperature of the reforming furnace is 135-180 ℃, and the thermal efficiency is 89-92%. The method of only adopting the flue gas to preheat the combustion air cannot continuously reduce the temperature of the flue gas, and the heat efficiency is difficult to continuously improve. The low-temperature heat energy (sensible heat and latent heat) contained in the flue gas cannot be recycled, the energy is wasted, and the energy-saving and emission-reducing policy is not met.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem who mainly solves provides a condensing hydrocarbon reformer system of integrated low pressure combustible gas pressure boost heating system, has advantages such as reliable performance height, heat recovery rate height, has extensive market prospect in hydrocarbon hydrogen manufacturing conversion equipment's application and popularization simultaneously.
In order to solve the technical problem, the utility model discloses a technical scheme be:
there is provided a condensing hydrocarbon reformer system integrated with a low pressure fuel gas booster heating system, comprising: a supercharger, a low-pressure combustible gas heating device, a conversion device, a heat exchange cooling device, a high-temperature air preheating device, a waste heat boiler device, a low-temperature air preheating device, a condensing air preheating device, an air fan, a flue gas fan and a chimney, wherein the heat exchange cooling device comprises a raw material preheating device and/or a steam overheating device,
the conversion device, the heat exchange cooling device, the high-temperature air preheating device, the waste heat boiler device, the low-temperature air preheating device and the condensing air preheating device are sequentially connected through a conveying pipeline, the condensing air preheating device is connected with a chimney through a flue gas fan, the low-pressure combustible gas heating device is connected with the heat exchange cooling device, the high-temperature air preheating device or the waste heat boiler device through a shunt pipeline, and the low-pressure combustible gas heating device is connected with the low-temperature air preheating device, the waste heat boiler device, the flue gas fan or the condensing air preheating device through a return pipeline,
the low-pressure combustible gas heating device is connected with a supercharger used for supercharging low-pressure combustible gas, the low-pressure combustible gas heating device and the high-temperature air preheating device are connected with the conversion device through a circulating pipeline, the low-temperature air preheating device is connected with the high-temperature air preheating device through a circulating pipeline, the air fan used for conveying ambient air is connected with the condensing air preheating device, the condensing air preheating device is connected with the low-temperature air preheating device through a circulating pipeline so as to perform parallel heat exchange, and the condensing air preheating device is provided with a flue gas condensate water neutralizing, treating and discharging device and a demisting device.
In a preferred embodiment of the present invention, the heat exchange and cooling device comprises a raw material preheating device and a steam superheating device.
In a preferred embodiment of the present invention, the raw material preheating device is connected to the low-pressure combustible gas heating device through a shunt pipe.
In a preferred embodiment of the present invention, the low-pressure combustible gas heating device is connected to the low-temperature air preheating device, the waste heat boiler device or the flue gas blower through a return pipe.
In a preferred embodiment of the present invention, the low-pressure combustible gas heating device is connected to the waste heat boiler device through a bypass pipe.
In a preferred embodiment of the present invention, the low-pressure combustible gas heating device is connected to the condensing air preheating device or the flue gas blower through a return line.
In a preferred embodiment of the present invention, the low-pressure gas heating device is connected to the high-temperature air preheating device through a bypass line, and is connected to the condensing air preheating device through a return line.
In a preferred embodiment of the present invention, the heat exchange and cooling device comprises a raw material preheating device or a steam superheating device.
In a preferred embodiment of the present invention, the low-pressure combustible gas heating device is connected to the low-temperature air preheating device or the waste heat boiler device through a return pipe.
In a preferred embodiment of the present invention, the preheater structure of the condensing air preheating device comprises one or more of a corrosion-resistant composite plate structure, a non-metal plate structure, and a glass tube structure.
The utility model has the advantages that: through the parallel heat exchange of multiunit equipment, can effectively reduce exhaust gas temperature, retrieve flue gas sensible heat and partial latent heat, improve the thermal efficiency, reduce high heating value fuel consumption.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:
FIG. 1 is a schematic diagram of a first embodiment of a condensing hydrocarbon converter system incorporating a low pressure gas booster heating system of the present invention;
FIG. 2 is a schematic structural diagram of a second embodiment of the condensing hydrocarbon reformer system of the integrated low pressure combustible gas booster heating system of the present invention;
FIG. 3 is a schematic structural diagram of a third embodiment of a condensing hydrocarbon converter system of the integrated low-pressure combustible gas booster heating system of the present invention;
FIG. 4 is a schematic structural diagram of a fourth embodiment of the condensing hydrocarbon reformer system of the integrated low pressure combustible gas booster heating system of the present invention;
FIG. 5 is a schematic structural view of a fifth embodiment of the condensing hydrocarbon reformer system of the integrated low pressure combustible gas booster heating system of the present invention;
FIG. 6 is a schematic structural view of a sixth embodiment of the condensing hydrocarbon reformer system of the integrated low pressure combustible gas booster heating system of the present invention;
FIG. 7 is a schematic diagram of a seventh embodiment of a condensing hydrocarbon reformer system incorporating a low pressure combustible gas booster heating system of the present invention;
fig. 8 is a schematic structural diagram of an embodiment eight of the condensing hydrocarbon reformer system of the integrated low-pressure combustible gas booster heating system of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The embodiment of the utility model provides an include:
a condensing hydrocarbon converter system integrated with a low-pressure combustible gas supercharging heating system structurally comprises: the device comprises a supercharger, a low-pressure combustible gas heating device, a conversion device (such as a converter), a heat exchange cooling device, a high-temperature air preheating device, a waste heat boiler device, a low-temperature air preheating device, a condensation type air preheating device, an air fan, a flue gas fan and a chimney, wherein the heat exchange cooling device comprises a raw material preheating device and/or a steam overheating device.
The conversion device, the heat exchange cooling device, the high-temperature air preheating device, the waste heat boiler device, the low-temperature air preheating device and the condensing air preheating device are sequentially connected through a conveying pipeline, the condensing air preheating device is connected with a chimney through a smoke fan, and the smoke fan and a downstream flue need to be subjected to anti-corrosion treatment. The low-pressure combustible gas heating device is connected with the heat exchange cooling device, the high-temperature air preheating device or the waste heat boiler device through a diversion pipeline, and is connected with the low-temperature air preheating device, the waste heat boiler device, the smoke fan or the condensing air preheating device through a return pipeline.
The low-pressure combustible gas heating device is connected with a supercharger used for supercharging and conveying low-pressure combustible gas, the low-pressure combustible gas heating device and the high-temperature air preheating device are connected with the conversion device through a circulating pipeline, and the supercharged decomposed gas (low-pressure combustible gas) heated by the low-pressure combustible gas heating device is sent to a burner in the conversion device for burning.
The outlet pressure of the low-pressure analysis gas after being pressurized by the booster compressor can be flexibly adjusted according to actual needs, and the flue gas inlet and outlet temperatures of the low-pressure combustible gas heating device can be flexibly adjusted according to actual needs, namely the flue gas inlet position and the flue gas outlet position can be flexibly designed according to the actual conditions of the converter.
After the analysis gas is pressurized by the supercharger, the pressure of the analysis gas can be increased from about 30kPa (g) to 60-300 kPa (g), the temperature of the analysis gas at the outlet of the supercharger is 50-130 ℃, and the flue gas entering the low-pressure combustible gas heating device for heat exchange can be heated to 300-700 ℃.
The low-pressure gas from the PSA device with the pressure of about 30kPa (g) is pressurized by the booster and then exchanges heat with the flue gas, and exchanges heat with the reforming furnace raw material preheating section to the low-temperature air preheating section in parallel, so that the waste heat of the flue gas is effectively utilized, the temperature of the flue gas outlet can be reduced to 60-120 ℃ or even below, and the thermal efficiency of the reforming furnace can be improved to 93-96% or even above. And the consumption of high-calorific-value fuel gas can be reduced by 20-100%, and valuable high-calorific-value fuel is saved. In addition, after the low-pressure analysis gas is heated, the excess air coefficient can be reduced to be less than 1.10, and NO is reducedxAnd (4) generating.
The low-temperature air preheating device is connected with the high-temperature air preheating device through a circulating pipeline, the air fan used for conveying ambient air is connected with the condensing air preheating device, and the condensing air preheating device is connected with the low-temperature air preheating device through the circulating pipeline.
After being preheated by the high-temperature air preheating device, the low-temperature air preheating device and the condensing air preheating device, the combustion-supporting air can be heated to 300-650 ℃ from the normal temperature and is sent to a combustor of the conversion section for fuel combustion.
Because the analytic gas and the reforming furnace, the steam superheating device and the condensing air preheating device exchange heat in parallel, sensible heat and partial latent heat in the flue gas waste heat are effectively utilized, the temperature of a flue gas outlet can be reduced to 60-120 ℃, and the thermal efficiency of the reforming furnace can be improved to 93-96% or even more. And the consumption of high-calorific-value fuel gas can be reduced by 20-100%, and valuable high-calorific-value fuel is saved.
The condensing air preheating device not only utilizes the low-temperature sensible heat of the flue gas, but also recovers partial latent heat of water vapor contained in the flue gas, thereby improving the energy utilization rate. The preheater part in the condensing air preheating device can adopt a corrosion-resistant composite plate type, a non-metal plate type, a glass tube type or other types with excellent acid-base corrosion resistance.
The condensing air preheating device is integrated with a flue gas condensate neutralizing treatment discharging device and a demisting facility. The condensate neutralizing treatment discharging device can neutralize PH 2-4 acid condensate into neutral and alkalescent PH 6-9 water, and meets the direct discharge standard of environmental protection requirements. The treated water can be directly discharged or collected for resource utilization, so that the water is indirectly saved. The demisting facility can collect condensed fog drops contained in the flue gas into a condensed water neutralization treatment device for neutralization treatment. And the corrosion of acid fog drops in the flue gas to downstream equipment and facilities is reduced.
Detailed description of the preferred embodiment
As shown in fig. 1, a condensing hydrocarbon converter system integrated with a low-pressure combustible gas pressurizing and heating system structurally comprises: the device comprises a supercharger, a low-pressure combustible gas heating device, a conversion device, a heat exchange cooling device, a high-temperature air preheating device, a waste heat boiler device, a low-temperature air preheating device, a condensation type air preheating device, an air fan, a flue gas fan and a chimney, wherein the heat exchange cooling device comprises a raw material preheating device or a steam overheating device.
The conversion device is connected with a heat exchange cooling device through a conveying pipeline, the heat exchange cooling device is respectively connected with the low-pressure combustible gas heating device and the high-temperature air preheating device through a shunt pipeline, the high-temperature air preheating device, the waste heat boiler device, the low-temperature air preheating device and the condensing air preheating device are sequentially connected through the conveying pipeline, the low-pressure combustible gas heating device is connected with the low-temperature air preheating device through a backflow pipeline, and the condensing air preheating device is connected with a chimney through a smoke fan.
The low-pressure combustible gas heating device is connected with a supercharger used for supercharging and conveying low-pressure combustible gas, the low-pressure combustible gas heating device and the high-temperature air preheating device are connected with the conversion device through a circulating pipeline, the low-temperature air preheating device is connected with the high-temperature air preheating device through a circulating pipeline, the air fan used for conveying ambient air is connected with the condensing air preheating device, and the condensing air preheating device is connected with the low-temperature air preheating device through a circulating pipeline.
When the device works, high-temperature flue gas from the rotation device enters a raw material preheating device or a steam superheating device to exchange heat with raw materials or saturated steam for cooling; then, the cooled flue gas is divided into two paths: (1) one path of flue gas enters a high-temperature air preheating device, exchanges heat with air from a low-temperature air preheating device, enters a waste heat boiler device (comprising a steam generating device and/or a coal saving device) and exchanges heat with steam and/or boiler feed water, and (2) the other path of flue gas enters a low-pressure combustible gas heating device and exchanges heat with low-temperature desorption gas from a PSA device pressurized by a supercharger; the two paths of flue gas after heat exchange and temperature reduction respectively converge and enter a low-temperature air preheating device to exchange heat with air from a condensing air preheating section; then the air enters a condensation type air preheating section to exchange heat with normal temperature air from an air fan; and finally, the smoke is sent into a chimney through a smoke fan and is discharged into the atmosphere.
Detailed description of the invention
As shown in fig. 2, a condensing hydrocarbon converter system integrated with a low-pressure combustible gas pressurizing and heating system structurally comprises: the device comprises a supercharger, a low-pressure combustible gas heating device, a conversion device, a heat exchange cooling device, a high-temperature air preheating device, a waste heat boiler device, a low-temperature air preheating device, a condensation type air preheating device, an air fan, a flue gas fan and a chimney, wherein the heat exchange cooling device comprises a raw material preheating device or a steam overheating device.
The conversion device is connected with a heat exchange cooling device through a conveying pipeline, the heat exchange cooling device is respectively connected with the low-pressure combustible gas heating device and the high-temperature air preheating device through a shunt pipeline, the high-temperature air preheating device, the waste heat boiler device, the low-temperature air preheating device and the condensing air preheating device are sequentially connected through the conveying pipeline, the low-pressure combustible gas heating device is connected with the waste heat boiler device through a backflow pipeline, and the condensing air preheating device is connected with a chimney through a smoke fan.
The low-pressure combustible gas heating device is connected with a supercharger used for supercharging and conveying low-pressure combustible gas, the low-pressure combustible gas heating device and the high-temperature air preheating device are connected with the conversion device through a circulating pipeline, the low-temperature air preheating device is connected with the high-temperature air preheating device through a circulating pipeline, the air fan used for conveying ambient air is connected with the condensing air preheating device, and the condensing air preheating device is connected with the low-temperature air preheating device through a circulating pipeline.
When the device works, high-temperature flue gas from the rotation device enters the raw material preheating device and/or the steam superheating device to exchange heat with the raw material or saturated steam for cooling; then, the method is divided into two paths: (1) one path of flue gas enters a high-temperature air preheating device to exchange heat with air from a low-temperature air preheating device, and (2) the other path of flue gas enters a low-pressure combustible gas heating device to exchange heat with low-temperature desorption gas from a PSA device pressurized by a supercharger; the two paths of flue gas after heat exchange and temperature reduction respectively converge and enter a waste heat boiler device (comprising a steam generating device and/or a coal saving device) to exchange heat with steam and/or boiler feed water; the air enters a low-temperature air preheating device and a condensing air preheating device to exchange heat with normal-temperature air from an air fan; then the smoke is sent into a chimney through a smoke fan and is discharged into the atmosphere.
Detailed description of the preferred embodiment
As shown in fig. 3, a condensing hydrocarbon converter system integrated with a low-pressure combustible gas pressurizing and heating system structurally comprises: the device comprises a supercharger, a low-pressure combustible gas heating device, a conversion device, a raw material preheating device, a steam superheating device, a high-temperature air preheating device, a waste heat boiler device, a low-temperature air preheating device, a condensing air preheating device, an air fan, a flue gas fan and a chimney.
The conversion device is connected with a raw material preheating device through a conveying pipeline, the raw material preheating device is respectively connected with the low-pressure combustible gas heating device and the steam superheating device through a diversion pipeline, the steam superheating device, the high-temperature air preheating device, the waste heat boiler device, the low-temperature air preheating device and the condensing air preheating device are sequentially connected through the conveying pipeline, the low-pressure combustible gas heating device is connected with the low-temperature air preheating device through a backflow pipeline, and the condensing air preheating device is connected with a chimney through a smoke fan.
The low-pressure combustible gas heating device is connected with a supercharger used for supercharging and conveying low-pressure combustible gas, the low-pressure combustible gas heating device and the high-temperature air preheating device are connected with the conversion device through a circulating pipeline, the low-temperature air preheating device is connected with the high-temperature air preheating device through a circulating pipeline, the air fan used for conveying ambient air is connected with the condensing air preheating device, and the condensing air preheating device is connected with the low-temperature air preheating device through a circulating pipeline.
When the device works, high-temperature flue gas from the device enters a raw material preheating section to exchange heat with the raw material and cool; then, the method is divided into two paths: (1) one path of flue gas enters a steam superheating device to exchange heat with saturated steam from a steam drum, then enters a high-temperature air preheating device to exchange heat with air from a low-temperature air preheating device, and then enters a waste heat boiler device (comprising a steam generating device and/or a coal saving device) to exchange heat with steam and/or boiler feed water, and (2) the other path of flue gas enters a low-pressure combustible gas heating device to exchange heat with low-temperature desorption gas from a PSA device pressurized by a booster; the two paths of flue gas after heat exchange and temperature reduction respectively converge and enter a low-temperature air preheating device and a condensing air preheating device to exchange heat with normal-temperature air from an air fan; then the smoke is sent into a chimney through a smoke fan and is discharged into the atmosphere.
Detailed description of the invention
As shown in fig. 4, a condensing hydrocarbon converter system integrated with a low-pressure combustible gas pressurizing and heating system structurally comprises: the device comprises a supercharger, a low-pressure combustible gas heating device, a conversion device, a raw material preheating device, a steam superheating device, a high-temperature air preheating device, a waste heat boiler device, a low-temperature air preheating device, a condensing air preheating device, an air fan, a flue gas fan and a chimney.
The conversion device is connected with the raw material preheating device through a conveying pipeline, the raw material preheating device is respectively connected with the low-pressure combustible gas heating device and the steam superheating device through a diversion pipeline, the steam superheating device, the high-temperature air preheating device, the waste heat boiler device, the low-temperature air preheating device and the condensing air preheating device are sequentially connected through the conveying pipeline, the low-pressure combustible gas heating device is connected with the waste heat boiler device through a backflow pipeline, and the condensing air preheating device is connected with a chimney through a smoke fan.
The low-pressure combustible gas heating device is connected with a supercharger used for supercharging and conveying low-pressure combustible gas, the low-pressure combustible gas heating device and the high-temperature air preheating device are connected with the conversion device through a circulating pipeline, the low-temperature air preheating device is connected with the high-temperature air preheating device through a circulating pipeline, the air fan used for conveying ambient air is connected with the condensing air preheating device, and the condensing air preheating device is connected with the low-temperature air preheating device through a circulating pipeline.
When the device works, high-temperature flue gas from the device enters a raw material preheating device to exchange heat with the raw material for cooling; then, the method is divided into two paths: (1) one path of the steam enters a steam superheating device to exchange heat with saturated steam from a steam drum; the air enters a high-temperature air preheating device to exchange heat with the air from a low-temperature air preheating device; (2) the other path of flue gas enters a low-pressure combustible gas heating device to exchange heat with low-temperature desorption gas from a PSA device pressurized by a supercharger; the two paths of flue gas after heat exchange and temperature reduction are converged and then enter a waste heat boiler device (comprising a steam generating device and/or a coal saving device) to exchange heat with steam and/or boiler feed water; finally, the air enters a low-temperature air preheating device and a condensing air preheating device to exchange heat with normal-temperature air from an air fan; then the smoke is sent into a chimney through a smoke fan and is discharged into the atmosphere.
Detailed description of the preferred embodiment
As shown in fig. 5, a condensing hydrocarbon converter system integrated with a low-pressure combustible gas pressurizing and heating system structurally comprises: the device comprises a supercharger, a low-pressure combustible gas heating device, a conversion device, a raw material preheating device, a steam superheating device, a high-temperature air preheating device, a waste heat boiler device, a low-temperature air preheating device, a condensing air preheating device, an air fan, a flue gas fan and a chimney.
The conversion device is connected with the raw material preheating device through a conveying pipeline, the raw material preheating device is respectively connected with the low-pressure combustible gas heating device and the steam superheating device through a diversion pipeline, the steam superheating device, the high-temperature air preheating device, the waste heat boiler device, the low-temperature air preheating device and the condensing air preheating device are sequentially connected through the conveying pipeline, and the low-pressure combustible gas heating device and the condensing air preheating device are connected with a chimney through a flue gas fan.
The low-pressure combustible gas heating device is connected with a supercharger used for supercharging and conveying low-pressure combustible gas, the low-pressure combustible gas heating device and the high-temperature air preheating device are connected with the conversion device through a circulating pipeline, the low-temperature air preheating device is connected with the high-temperature air preheating device through a circulating pipeline, the air fan used for conveying ambient air is connected with the condensing air preheating device, and the condensing air preheating device is connected with the low-temperature air preheating device through a circulating pipeline.
When the device works, high-temperature flue gas from the device enters a raw material preheating device to exchange heat with the raw material for cooling; then, the method is divided into two paths: (1) one path of the steam enters a steam superheating device to exchange heat with saturated steam from a steam drum; the air enters a high-temperature air preheating device to exchange heat with the air from a low-temperature air preheating device; then the waste heat enters a waste heat boiler device (comprising a steam generating device and/or a coal saving device) to exchange heat with steam and/or boiler feed water; the air enters a low-temperature air preheating device and a condensing air preheating device to exchange heat with normal-temperature air from an air fan; (2) the other path of flue gas enters a low-pressure combustible gas heating device and exchanges heat with low-temperature desorption gas from a PSA device pressurized by a supercharger; the two paths of flue gas after heat exchange and temperature reduction are converged and then sent into a chimney through a flue gas fan to be discharged into the atmosphere.
Detailed description of the preferred embodiment
As shown in fig. 6, a condensing hydrocarbon converter system integrated with a low-pressure combustible gas pressurizing and heating system structurally comprises: the device comprises a supercharger, a low-pressure combustible gas heating device, a conversion device, a raw material preheating device, a steam superheating device, a high-temperature air preheating device, a waste heat boiler device, a low-temperature air preheating device, a condensing air preheating device, an air fan, a flue gas fan and a chimney.
The low-pressure combustible gas preheating device is connected with the condensing type air preheating device through a backflow pipeline, and the condensing type air preheating device is connected with a chimney through a smoke fan.
The low-pressure combustible gas heating device is connected with a supercharger used for supercharging and conveying low-pressure combustible gas, the low-pressure combustible gas heating device and the high-temperature air preheating device are connected with the conversion device through a circulating pipeline, the low-temperature air preheating device is connected with the high-temperature air preheating device through a circulating pipeline, the air fan used for conveying ambient air is connected with the condensing air preheating device, and the condensing air preheating device is connected with the low-temperature air preheating device through a circulating pipeline.
When the device works, high-temperature flue gas from the device enters a raw material preheating device to exchange heat with the raw material for cooling; the steam enters a steam superheating device to exchange heat with saturated steam from a steam drum; the air enters a high-temperature air preheating device to exchange heat with the air from a low-temperature air preheating device; then, the method is divided into two paths: (1) one path of the waste heat enters a waste heat boiler device (comprising a steam generating device and/or a coal saving device) to exchange heat with steam and/or boiler feed water; the air enters the low-temperature air preheating device to exchange heat with the air from the condensing air preheating device; (2) the other path of flue gas enters a low-pressure combustible gas heating device to exchange heat with low-temperature desorption gas from a PSA device pressurized by a supercharger; the two paths of flue gas after heat exchange and temperature reduction respectively are converged and then enter an air condensing device to exchange heat with normal-temperature air from an air fan; and the flue gas is sent into a chimney through a flue gas fan and discharged into the atmosphere.
Detailed description of the preferred embodiment
As shown in fig. 7, a condensing hydrocarbon converter system integrated with a low-pressure combustible gas pressurizing and heating system structurally comprises: the device comprises a supercharger, a low-pressure combustible gas heating device, a conversion device, a raw material preheating device, a steam superheating device, a high-temperature air preheating device, a waste heat boiler device, a low-temperature air preheating device, a condensing air preheating device, an air fan, a flue gas fan and a chimney.
The low-pressure combustible gas preheating device is connected with the condensing type air preheating device through a return pipeline, and the condensing type air preheating device is connected with a chimney through a smoke fan.
The low-pressure combustible gas heating device is connected with a supercharger used for supercharging and conveying low-pressure combustible gas, the low-pressure combustible gas heating device and the high-temperature air preheating device are connected with the conversion device through a circulating pipeline, the low-temperature air preheating device is connected with the high-temperature air preheating device through a circulating pipeline, the air fan used for conveying ambient air is connected with the condensing air preheating device, and the condensing air preheating device is connected with the low-temperature air preheating device through a circulating pipeline.
When the device works, high-temperature flue gas from the device enters a raw material preheating device to exchange heat with the raw material for cooling; the steam enters a steam superheating device to exchange heat with saturated steam from a steam drum; the air enters a high-temperature air preheating device to exchange heat with the air from a low-temperature air preheating device; the waste heat enters a waste heat boiler device (comprising a steam generating device and/or a coal saving device) to exchange heat with steam and/or boiler feed water; then, the method is divided into two paths: (1) one path enters the low-temperature air preheating device to exchange heat with air from the condensing air preheating device; (2) the other path of flue gas enters a low-pressure combustible gas heating device to exchange heat with low-temperature desorption gas from a PSA device pressurized by a supercharger; the two paths of flue gas after heat exchange and temperature reduction respectively are converged and then enter an air condensing device to exchange heat with normal-temperature air from an air fan; and finally, the smoke is sent into a chimney through a smoke fan and is discharged into the atmosphere.
Detailed description of the preferred embodiment
As shown in fig. 8, a condensing hydrocarbon converter system integrated with a low-pressure combustible gas pressurizing and heating system structurally comprises: the device comprises a supercharger, a low-pressure combustible gas heating device, a conversion device, a raw material preheating device, a steam superheating device, a high-temperature air preheating device, a waste heat boiler device, a low-temperature air preheating device, a condensing air preheating device, an air fan, a flue gas fan and a chimney.
The low-pressure combustible gas preheating device and the condensing air preheating device are connected through a conveying pipeline, and the low-pressure combustible gas heating device and the condensing air preheating device are connected with a chimney through a smoke fan.
The low-pressure combustible gas heating device is connected with a supercharger used for supercharging and conveying low-pressure combustible gas, the low-pressure combustible gas heating device and the high-temperature air preheating device are connected with the conversion device through a circulating pipeline, the low-temperature air preheating device is connected with the high-temperature air preheating device through a circulating pipeline, the air fan used for conveying ambient air is connected with the condensing air preheating device, and the condensing air preheating device is connected with the low-temperature air preheating device through a circulating pipeline.
When the device works, high-temperature flue gas from the device enters a raw material preheating device to exchange heat with the raw material for cooling; the steam enters a steam superheating device to exchange heat with saturated steam from a steam drum; the air enters a high-temperature air preheating device to exchange heat with the air from a low-temperature air preheating device; the waste heat enters a waste heat boiler device (comprising a steam generation section and/or a coal saving section) to exchange heat with steam and/or boiler feed water; then, the method is divided into two paths: (1) one path enters the low-temperature air preheating device to exchange heat with air from the condensing air preheating device; then the air enters an air condensing device to exchange heat with normal temperature air from an air fan; (2) the other path of flue gas enters a low-pressure combustible gas heating device to exchange heat with low-temperature desorption gas from a PSA device pressurized by a supercharger; the two paths of flue gas after heat exchange and temperature reduction are converged and sent into a chimney through a flue gas fan to be discharged into the atmosphere.
The utility model discloses integrated low pressure combustible gas pressure boost heating system's condensing hydrocarbon converter system's beneficial effect is: through the parallel heat exchange of multiunit equipment, can effectively reduce exhaust gas temperature, retrieve flue gas sensible heat and partial latent heat, improve the thermal efficiency, reduce high heating value fuel consumption.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all of which utilize the equivalent structure or equivalent flow transformation made by the content of the specification of the present invention, or directly or indirectly applied to other related technical fields, all included in the same way in the patent protection scope of the present invention.

Claims (10)

1. A condensing hydrocarbon converter system incorporating a low pressure combustible gas booster heating system, comprising: a supercharger, a low-pressure combustible gas heating device, a conversion device, a heat exchange cooling device, a high-temperature air preheating device, a waste heat boiler device, a low-temperature air preheating device, a condensing air preheating device, an air fan, a flue gas fan and a chimney, wherein the heat exchange cooling device comprises a raw material preheating device and/or a steam overheating device,
the conversion device, the heat exchange cooling device, the high-temperature air preheating device, the waste heat boiler device, the low-temperature air preheating device and the condensing air preheating device are sequentially connected through a conveying pipeline, the condensing air preheating device is connected with a chimney through a flue gas fan, the low-pressure combustible gas heating device is connected with the heat exchange cooling device, the high-temperature air preheating device or the waste heat boiler device through a shunt pipeline, and the low-pressure combustible gas heating device is connected with the low-temperature air preheating device, the waste heat boiler device, the flue gas fan or the condensing air preheating device through a return pipeline,
the low-pressure combustible gas heating device is connected with a supercharger used for supercharging low-pressure combustible gas, the low-pressure combustible gas heating device and the high-temperature air preheating device are connected with the conversion device through a circulating pipeline, the low-temperature air preheating device is connected with the high-temperature air preheating device through a circulating pipeline, the air fan used for conveying ambient air is connected with the condensing air preheating device, the condensing air preheating device is connected with the low-temperature air preheating device through a circulating pipeline so as to perform parallel heat exchange, and the condensing air preheating device is provided with a flue gas condensate water neutralizing, treating and discharging device and a demisting device.
2. The integrated low pressure combustible gas booster heating system condensing hydrocarbon converter system of claim 1 wherein the heat exchange desuperheating means comprises a feedstock preheating means and a steam superheating means.
3. The condensing hydrocarbon reformer system of an integrated low pressure combustible gas booster heating system of claim 2, wherein the feed preheater means is connected to the low pressure combustible gas heater means by a split stream line.
4. The system of claim 3, wherein the low pressure gas heater is connected to the low temperature air preheater, the waste heat boiler, or the flue gas blower via a return line.
5. The integrated low pressure gas fired booster heating system condensing hydrocarbon converter system of claim 2 wherein the low pressure gas fired heating means is connected to the waste heat boiler means by a bypass line.
6. The system of claim 5, wherein the low pressure gas heater is connected to the condensing air preheater or the flue gas blower via a return line.
7. The system of claim 2, wherein the low pressure gas heater is connected to the high temperature air preheater by a bypass line and to the condensing air preheater by a return line.
8. The integrated low pressure combustible gas booster heating system condensing hydrocarbon converter system of claim 1 wherein the heat exchange desuperheating device comprises a feedstock preheating device or a steam superheating device.
9. The system of claim 8, wherein the low pressure gas heater is connected to the low temperature air preheater or the waste heat boiler via a return line.
10. The system of any one of claims 1 to 9, wherein the preheater structure in the condensing air preheater unit comprises one or more of a corrosion resistant composite plate structure, a non-metallic plate structure, and a glass tube structure.
CN202120710357.4U 2021-04-08 2021-04-08 Condensing type hydrocarbon converter system integrated with low-pressure combustible gas pressurizing and heating system Active CN214734508U (en)

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