CN218120203U

CN218120203U - Horizontal pipe falling film type heat carrier furnace and heat carrier heating furnace system

Info

Publication number: CN218120203U
Application number: CN202222094265.5U
Authority: CN
Inventors: 陈剑雄
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-08-09
Filing date: 2022-08-09
Publication date: 2022-12-23
Anticipated expiration: 2032-08-09

Abstract

The utility model discloses a horizontal pipe falling film formula heat carrier heater and heat carrier heating furnace system, wherein horizontal pipe falling film formula heat carrier heater includes the furnace body, the inside top-down of furnace body is equipped with the liquid distributor in proper order, horizontal pipe falling film formula heat exchanger, collect the liquid distributor, furnace, the outside top-down of furnace body is equipped with liquid working medium import in proper order, the flue gas collection case, the combustor, liquid working medium export, liquid working medium import and liquid distributor intercommunication, the furnace head end is located to the combustor, the upper portion of furnace tail end is equipped with the flue gas distributor, the flue gas distributor borrows horizontal pipe falling film formula heat exchanger and flue gas collection case intercommunication. The utility model discloses a horizontal pipe falling film formula heat carrier furnace adopts horizontal pipe falling film formula heat exchanger as the heat exchanger and changes liquid working medium into flowing outside horizontal pipe falling film formula heat exchanger, and liquid working medium carries out the free flow with the mode that the membrane flows under the effect of gravity and comes the heat transfer, so liquid working medium need not to force quick circulation, and this has reduced energy consumption and cost, can also reduce conflagration hidden danger.

Description

Horizontal pipe falling film type heat carrier furnace and heat carrier heating furnace system

Technical Field

The utility model relates to a heating furnace system technical field especially relates to a horizontal pipe falling film formula heat carrier heater and heat carrier heating furnace system.

Background

The heat carrier furnace generally comprises an inorganic heat carrier furnace (namely a molten salt furnace) which uses inorganic molten salt as a working medium and a heat carrier furnace which uses organic matter for conductionThe hot oil is used as the organic heat carrier furnace (i.e. heat-conducting oil furnace) of the working medium. At present, the heat exchange pipelines of the two heat carrier furnaces generally adopt a vertical or horizontal coil pipe structure, wherein flue gas flows outside the heat exchange pipelines for heating, and liquid working media (molten salt or heat conducting oil) flow in the heat exchange pipelines for heat exchange under the driving of a pump. As known from heat transfer science, a boundary layer is formed when liquid working media flow in a heating surface pipeline, and the temperature of the boundary layer is directly influenced by the thickness of the boundary layer: the thicker the boundary layer, the higher the temperature of the boundary layer, the more easily the boundary layer overtemperature is caused, the overheating of the tube wall of the heating surface tube is caused, and the premature aging failure is caused, in order to prevent the overtemperature of the tube wall of the heating surface tube of the heat carrier furnace, it is necessary to ensure that the liquid working medium in the heating surface tube has higher flow rate, for example, the flow rate of the radiation heating surface is required to be more than 2.0m/s and the flow rate of the convection heating surface is required to be more than 1.5m/s in engineering, but such high flow rate can cause the temperature difference of an inlet and an outlet to be small, for example, the temperature difference of the inlet and the outlet of the molten salt furnace is 40 ℃, the temperature difference of the inlet and the outlet of the heat-conducting oil furnace is 20-30 ℃, and the temperature difference of the inlet and the outlet is small, so that the set heating power can be reached by using huge flow, thereby causing the power of the circulating pump, for example, the power of the circulating pump of the 2t/h heat-conducting oil furnace reaches 30, and the flow rate of KW reaches 114m ³ The final result is high energy consumption, which is not beneficial to energy saving; meanwhile, the temperature difference between the inlet and the outlet is reduced, and adverse effects are brought to heat utilization equipment, according to Q = cm delta T, the heat utilization equipment needs to obtain certain heat Q, under the condition that the temperature difference delta T is small, the mass m of a heating working medium flowing through a heat exchanger can only be increased, and m = U multiplied by S multiplied by T (wherein U is the working medium flow velocity, S is the working medium circulation area of the heat exchanger, and T is time), obviously, under the condition that the flow velocity U is fixed, the circulation area S can only be increased, namely, the volume of the heat exchanger is increased, so that the manufacturing cost is increased, and the waste of materials is caused. In addition, the liquid working medium flows in the heat exchange pipe under the action of the circulating pump to form certain pressure, for example, the liquid pressure in the heat-conducting oil furnace is 0.3MPa, so that the risk of fire caused by leakage of the working medium and contact with smoke is increased.

Therefore, a horizontal tube falling film type heat carrier furnace and a heat carrier heating furnace system are needed to solve the deficiencies of the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a horizontal pipe falling film formula heat carrier furnace, this horizontal pipe falling film formula heat carrier furnace energy consumption is low, and the cost is low, can also reduce conflagration hidden danger.

The utility model also aims at providing a heat carrier heating furnace system, this heat carrier heating furnace system energy consumption is low, and the cost is low, can also reduce the conflagration hidden danger.

For the purpose above the realization, the utility model provides a horizontal pipe falling liquid film formula heat carrier furnace, including the furnace body, the inside top-down of furnace body is equipped with liquid distributor, horizontal pipe falling liquid film heat exchanger in proper order, collects liquid distributor, furnace, and the outside top-down of furnace body is equipped with liquid working medium import, flue gas collection case, combustor, the export of liquid working medium in proper order, liquid working medium import and liquid distributor intercommunication, and the furnace head end is located to the combustor, and the upper portion of furnace tail end is equipped with the flue gas distributor, and the flue gas distributor borrows by horizontal pipe falling liquid film heat exchanger and flue gas collection case intercommunication.

Compared with the prior art, the utility model discloses a horizontal tube falling liquid film heat exchanger is as the heat exchanger, flue gas in the furnace enters into horizontal tube falling liquid film heat exchanger from flue gas distributor in, liquid working medium sprays outside horizontal tube falling liquid film heat exchanger after getting into liquid working medium import liquid distributor distribution is even, liquid working medium forms the membrane stream and constantly rises with the flue gas heat transfer after-temperature in the horizontal tube falling liquid film heat exchanger on horizontal tube falling liquid film heat exchanger surface, the membrane stream collects liquid distributor again under the effect of gravity, the liquid working medium that collects liquid distributor will collect flows to the furnace surface evenly and forms the membrane stream and heat transfer, then the membrane stream collects in the furnace bottom, flow from the export of liquid working medium at last. Therefore, the horizontal tube falling film heat exchanger is adopted as the heat exchanger, the liquid working medium flows outside the horizontal tube falling film heat exchanger, and the liquid working medium performs free flow to exchange heat in a film flow mode under the action of gravity, so that the liquid working medium does not need to be forced to circulate quickly, and the circulation flow is reduced on one hand, thereby saving energy consumption; on the other hand, the temperature difference between the inlet and the outlet is increased, so that the volume of the horizontal tube falling film type heat exchanger is reduced, and the manufacturing cost is reduced; meanwhile, because the liquid working medium flows outside the horizontal tube falling film heat exchanger, the liquid working medium belongs to non-pressure flow, and the fire hazard caused by pressure flow in the tube is avoided.

Preferably, the utility model discloses a horizontal pipe falling liquid film heat exchanger includes a plurality of heat exchange tubes, and a plurality of heat exchange tubes present multilayer multiseriate array configuration. The liquid working medium enters the liquid distributor and is uniformly distributed and then sprayed onto the first layer of heat exchange tubes, liquid films are formed on the surfaces of the heat exchange tubes and fall onto the lower layer of heat exchange tubes under the action of gravity, and the temperature of the liquid working medium is continuously increased after heat exchange of each layer of heat exchange tubes.

Preferably, the utility model discloses an every heat exchange tube that is located same row among the horizontal tube falling liquid film heat exchanger borrows the S-shaped passageway that the elbow established ties in proper order and forms the vertical parallel arrangement of multiseriate, and multiseriate S-shaped passageway connects in parallel between flue gas distributor and flue gas collection case.

Preferably, the utility model discloses a flue gas collection box has the exhanst gas outlet. The flue gas in the hearth enters the S-shaped passages of each row from the flue gas distributor, and then the flue gas circulating in the S-shaped passages of each row flows out from the flue gas outlet of the flue gas header.

Preferably, the utility model discloses a horizontal pipe falling liquid film formula heat exchanger's interlayer is equipped with the liquid distributor between the corresponding layer of heat exchange tube. The interlayer liquid distributor can collect the liquid working medium on the upper layer and uniformly spray the collected liquid working medium on the surface of the heat exchange tube on the lower layer.

Preferably, the utility model discloses a horizontal pipe falling liquid film heat exchanger's interlayer is equipped with the partition surface, and the partition is personally submitted sealedly and passes the elbow and be sealing connection with the furnace body inner wall, and the furnace body outside still is equipped with communicating pipe, and the partition surface borrows by communicating pipe and interlayer liquid distributor intercommunication. The blocking surface is provided to better perform the nitrogen displacement operation.

Preferably, the utility model discloses a still be equipped with the elbow cloth liquid ware corresponding with the elbow between the layer of horizontal pipe falling film heat exchanger. Specifically, the length of the elbow liquid distributor is 1/4-1/5 of the length of the heat exchange tube. The elbow liquid distributor is arranged to enable the liquid working medium on the surface of the elbow to be distributed more uniformly.

Preferably, the liquid working medium inlet of the utility model is communicated with the collecting liquid distributor by the first pipeline. The collecting liquid distributor mixes the collected liquid working medium with the liquid working medium from the first pipeline and uniformly flows the mixed liquid working medium to the outer surface of the hearth to form film flow and exchange heat, so that the heat exchange of the hearth can be increased by communicating the liquid working medium inlet with the collecting liquid distributor through the first pipeline, and the cooling of the hearth is increased.

For the purpose of realizing above, the utility model also provides a heat carrier heating furnace system, including liquid working medium groove, with hot equipment, liquid working medium inslot is provided with the circulating pump, still includes foretell horizontal pipe falling liquid film formula heat carrier heater, and liquid working medium groove forms first circulation circuit with horizontal pipe falling liquid film formula heat carrier heater intercommunication, and liquid working medium groove forms second circulation circuit with hot equipment intercommunication.

Compared with the prior art, the heat carrier heating furnace system of the utility model adopts the horizontal tube falling film heat exchanger as the heat exchanger and changes the liquid working medium to flow outside the horizontal tube falling film heat exchanger, the liquid working medium carries out free flow in a film flow mode under the action of gravity to exchange heat, so the liquid working medium does not need forced rapid circulation, and on the one hand, the circulation flow is reduced, thereby the energy consumption is saved; on the other hand, the temperature difference between the inlet and the outlet is increased, so that the volume of the horizontal tube falling film type heat exchanger is reduced, and the manufacturing cost is reduced; meanwhile, the liquid working medium flows outside the horizontal tube falling film heat exchanger, so that the liquid working medium belongs to non-pressure flow, and the fire hazard caused by pressure flow in the tube is avoided.

Preferably, the utility model discloses a heat carrier heating furnace system's horizontal pipe falling film formula heat carrier furnace is two at least, is parallelly connected the setting between the horizontal pipe falling film formula heat carrier furnace. Specifically, if the power of the heat carrier heating furnace system needs to be increased, two or more horizontal tube falling film type heat carrier furnaces arranged in parallel can be adopted, so that the adjustment of the power is easier to realize.

Preferably, the utility model discloses a heat carrier heating furnace system's horizontal pipe falling liquid film formula heat carrier heater is two at least, is the series connection setting between the horizontal pipe falling liquid film formula heat carrier heater, and the quantity in liquid working medium groove is corresponding with the quantity of horizontal pipe falling liquid film formula heat carrier heater, is provided with the expansion tank on the second circulation circuit. Specifically, the liquid working medium contained in the liquid working medium groove can be molten salt or heat conduction oil, and an expansion groove needs to be arranged when the liquid working medium contained in the liquid working medium groove is heat conduction oil. More specifically, the horizontal tube falling film type heat carrier furnace with the molten salt as the liquid working medium is set as the front stage, the horizontal tube falling film type heat carrier furnace with the heat transfer oil as the liquid working medium is set as the rear stage, and then the front stage and the rear stage are connected in series, so that the molten salt with higher temperature resistance can exchange heat with high-temperature flue gas, coking can be more easily caused, the heat transfer oil of fire hazard only needs to exchange heat with the molten salt below 500 ℃ and does not need to contact with the flue gas with the temperature higher than 500 ℃, the safety of the heat carrier heating furnace system and the durability of the heat transfer oil are greatly increased, the heat transfer oil furnace is changed from conditional safety into intrinsic safety, meanwhile, the heat of tail gas can be utilized, and the heat efficiency of the system is improved.

Preferably, the utility model discloses a heat carrier heating furnace system includes nitrogen protection device, and nitrogen protection device is linked together with first circulation circuit or second circulation circuit.

Preferably, the utility model discloses a nitrogen protection device includes the nitrogen gas jar, and nitrogen gas jar department is equipped with nitrogen gas control flap. After the nitrogen control valve is opened, nitrogen in the nitrogen tank enters the first circulation loop or the second circulation loop, so that air in the heat carrier heating furnace system is exhausted, further the oxidation and the degradation of the liquid working medium are prevented, and the service life of the liquid working medium is prolonged.

Drawings

Fig. 1 is a schematic longitudinal sectional view of a heat carrier heating furnace system according to an embodiment of the present invention.

Fig. 2 is a schematic cross-sectional structure diagram of a horizontal-tube falling-film heat carrier furnace in a heat carrier heating furnace system according to still another embodiment of the present invention.

Fig. 3 is a schematic longitudinal sectional view of a heat carrier heating furnace system according to another embodiment of the present invention.

Fig. 4 is a schematic cross-sectional structure diagram of the horizontal tube falling film type heat carrier furnace of the present invention.

Detailed Description

In order to explain technical contents, structural features, and effects of the present invention in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.

Referring to fig. 1, the heat carrier heating furnace system 100 of the present invention includes a liquid working medium tank 11, a heat consumption device 12, a circulating pump 13 disposed in the liquid working medium tank 11, and a horizontal tube falling film type heat carrier furnace 14, wherein the liquid working medium tank 11 is communicated with the horizontal tube falling film type heat carrier furnace 14 to form a first circulating loop 15, and the liquid working medium tank 11 is communicated with the heat consumption device 12 to form a second circulating loop 16. The flue gas in the hearth 17 enters the horizontal tube falling film heat exchanger 19 from the flue gas distributor 28, the first circulation loop 15 is opened, the circulating pump 13 extracts liquid working medium from the liquid working medium groove 11, the liquid working medium enters the liquid distributor 18, the liquid working medium in the liquid distributor 18 is uniformly sprayed out of the horizontal tube falling film heat exchanger 19, the liquid working medium forms a film flow on the outer surface of the horizontal tube falling film heat exchanger 19 and is subjected to heat exchange with the flue gas in the horizontal tube falling film heat exchanger 19, the temperature of the film flow is continuously increased, the film flow is collected to the liquid distributor 20 under the action of gravity, the collected liquid working medium uniformly flows to the outer surface of the hearth 17 by the liquid distributor 20 to form a film flow and is subjected to heat exchange, then the film flow is collected to the bottom of the hearth 17, finally flows out of the liquid working medium outlet 21 and returns to the liquid working medium groove 11 again to complete a heating circulation, after the temperature of the liquid working medium reaches the working temperature, the first circulation loop 15 is closed, the second circulation loop 16 is opened, the liquid working medium is conveyed to the heat utilization equipment 12 for heat exchange, and returns to the horizontal tube falling film heat carrier 14 for heating after the heat exchange is completed. Therefore, the heat carrier heating furnace system 100 of the present invention adopts the horizontal tube falling film heat exchanger 19 as a heat exchanger and changes the liquid working medium to flow outside the horizontal tube falling film heat exchanger 19, and the liquid working medium performs free flow in a film flow manner under the action of gravity to exchange heat, so that the liquid working medium does not need to be forced to circulate rapidly, which reduces the circulation flow rate and saves energy consumption; on the other hand, the temperature difference between the inlet and the outlet is increased, so that the volume of the horizontal tube falling film type heat exchanger 19 is reduced, and the manufacturing cost is reduced; meanwhile, the liquid working medium flows outside the horizontal tube falling film heat exchanger 19, so that the liquid working medium is in non-pressure flow, and the fire hazard caused by pressure flow in the tube is avoided.

Referring to fig. 2, the number of the horizontal tube falling film heat transfer material heaters 14 of the heat transfer material heating furnace system 100 of the present invention is at least two, and the horizontal tube falling film heat transfer material heaters 14 are connected in parallel. Specifically, if the power of the heat carrier heating furnace system 100 needs to be increased, the power can be adjusted more easily by using two or more horizontal tube falling film heat carrier furnaces 14 arranged in parallel.

Referring to fig. 3, the number of the horizontal tube falling film heat carrier furnaces 14 of the heat carrier heating furnace system 100 of the present invention is at least two, the horizontal tube falling film heat carrier furnaces 14 are connected in series, the number of the liquid working medium tanks 11 corresponds to the number of the horizontal tube falling film heat carrier furnaces 14, and the second circulation loop 16 is provided with an expansion tank 22. Specifically, the liquid working medium contained in the liquid working medium tank 11 may be molten salt or heat transfer oil, and when the liquid working medium contained in the liquid working medium tank 11 is heat transfer oil, the expansion tank 22 must be provided. More specifically, the horizontal tube falling film type heat carrier furnace 14 using molten salt as a liquid working medium may be set as a front stage, while the horizontal tube falling film type heat carrier furnace 14 using heat transfer oil as a liquid working medium may be set as a rear stage, and then the front stage and the rear stage are connected in series. If the heat carrier heating furnace system 100 includes two horizontal tube falling film heat carrier furnaces 14 arranged in series as shown in fig. 3, the number of the liquid working medium grooves 11 is two, the liquid working medium contained in the liquid working medium groove 11 in the first circulation loop 15 is molten salt, the liquid working medium contained in the liquid working medium groove 11 in the second circulation loop 16 is heat transfer oil, the two horizontal tube falling film heat carrier furnaces 14 are connected in series, so that the molten salt with higher temperature resistance can exchange heat with the flue gas with high temperature, coking can occur more easily, the heat transfer oil of fire only needs to exchange heat with the molten salt below 500 ℃ and does not need to contact with the flue gas with the temperature higher than 500 ℃, the safety of the heat carrier heating furnace system 100 and the durability of the heat transfer oil are greatly increased, the heat transfer oil furnace is changed from conditional safety to intrinsic safety, meanwhile, the heat of the tail gas can be utilized, and the heat efficiency of the heat carrier heating furnace system 100 is improved.

Specifically, the heat carrier heating furnace system 100 of the present invention includes a nitrogen protection device (not shown in fig. 1 to 3), and the nitrogen protection device is communicated with the first circulation loop 15 or the second circulation loop 16. Preferably, the utility model discloses a nitrogen protection device includes the nitrogen gas jar, and nitrogen gas jar department is equipped with nitrogen gas control flap. After the nitrogen control valve is opened, nitrogen in the nitrogen tank enters the first circulation loop 15 or the second circulation loop 16, so that air in the heat carrier heating furnace system 100 is exhausted, further, the oxidation degradation of the liquid working medium is prevented, and the service life of the liquid working medium is prolonged. Meanwhile, the first circulation loop 15 and the second circulation loop 16 are also provided with a valve 23 and an instrument 24, the valve 23 is used for controlling the opening or closing of the first circulation loop 15 or the second circulation loop 16, and the instrument 24 is used for controlling and observing the flow and the temperature of the liquid working medium.

Please continue to refer to fig. 1, the present invention discloses a horizontal tube falling film type heat carrier furnace 14, which comprises a furnace body 141, wherein a liquid distributor 18, a horizontal tube falling film type heat exchanger 19, a collecting liquid distributor 20 and a furnace 17 are sequentially arranged from top to bottom inside the furnace body 141, a liquid working medium inlet 25, a flue gas collecting box 26, a burner 27 and a liquid working medium outlet 21 are sequentially arranged from top to bottom outside the furnace body 141, the liquid working medium inlet 25 is communicated with the liquid distributor 18, the burner 27 is arranged at a head end 171 of the furnace, a flue gas distributor 28 is arranged at an upper portion of a tail end 172 of the furnace, and the flue gas distributor 28 is communicated with the flue gas collecting box 26 via the horizontal tube falling film type heat exchanger 19. The utility model discloses a horizontal tube falling film heat exchanger 19 is as the heat exchanger, combustor 27 spouts flame into furnace 17 and then realizes burning and output flue gas in furnace 17, flue gas in furnace 17 enters into horizontal tube falling film heat exchanger 19 from flue gas distributor 28 in, liquid working medium sprays outside horizontal tube falling film heat exchanger 19 after liquid working medium import 25 gets into liquid distributor 18 distributes evenly, liquid working medium flows at 19 surfaces of horizontal tube falling film heat exchanger and constantly rises with the flue gas heat transfer back temperature in horizontal tube falling film heat exchanger 19, the membrane flows collects liquid distributor 20 under the effect of gravity again, collect liquid working medium that liquid distributor 20 will collect and evenly flow to furnace 17 surfaces and form the membrane flow and the heat transfer, then the membrane flows and collects in furnace 17 bottom, flow out from liquid working medium export 21 at last. Therefore, the utility model adopts the horizontal tube falling film heat exchanger 19 as the heat exchanger and changes the liquid working medium into flowing outside the horizontal tube falling film heat exchanger 19, the liquid working medium carries out free flow to exchange heat in the mode of film flow under the action of gravity, so the liquid working medium does not need forced rapid circulation, on one hand, the circulation flow is reduced, thereby the energy consumption is saved; on the other hand, the temperature difference between the inlet and the outlet is increased, so that the volume of the horizontal tube falling film type heat exchanger 19 is reduced, and the manufacturing cost is reduced; meanwhile, the liquid working medium flows outside the horizontal tube falling film heat exchanger 19, so that the liquid working medium is in non-pressure flow, and the fire hazard caused by pressure flow in the tube is avoided.

Referring to fig. 1, 2 and 4, the horizontal tube falling film heat exchanger 19 of the present invention includes a plurality of heat exchange tubes 191, and the plurality of heat exchange tubes 191 are in a multi-layer and multi-column array arrangement structure. The liquid working medium enters the liquid distributor 18 and is uniformly distributed and then sprayed onto the heat exchange tubes 191 on the first layer, a liquid film is formed on the surfaces of the heat exchange tubes 191 and falls onto the heat exchange tubes 191 on the lower layer under the action of gravity, and the temperature of the liquid working medium is continuously increased after heat exchange is carried out on each layer of heat exchange tubes 191. And simultaneously, the utility model discloses an every heat exchange tube 191 that is located same row in the horizontal pipe falling film heat exchanger 19 borrows elbow 29 to establish ties in proper order and forms the vertical parallel arrangement' S of multiseriate S-shaped passageway, multiseriate S-shaped passageway connects in parallel between flue gas distributor 28 and flue gas collection case 26, flue gas collection case 26 has exhanst gas outlet 261 simultaneously, flue gas in the furnace 17 enters into the S-shaped passageway of every row from flue gas distributor 28, this makes the flue gas can flow to the heat exchange tube 191 on first layer from the heat exchange tube 191 of bottom, then the flue gas of circulation flows from the exhanst gas outlet 261 of flue gas collection case 26 again in every S-shaped passageway. Meanwhile, the horizontal tube falling film heat exchanger 19 of the present invention is further provided with an elbow liquid distributor 30 corresponding to the elbow 29 between the layers. More specifically, the length of the elbow liquid distributor 30 is 1/4-1/5 of the length of the heat exchange tube 191, and the arrangement of the elbow liquid distributor 30 can make the liquid working medium on the surface of the elbow 29 be distributed more uniformly.

Referring to fig. 1, the liquid distributor 31 corresponding to the heat exchange tube 191 is disposed between the layers of the horizontal tube falling film heat exchanger 19 of the present invention. The interlayer liquid distributor 31 can collect the liquid working medium on the upper layer and uniformly spray the collected liquid working medium onto the surface of the heat exchange tube 191 on the lower layer. Preferably, the utility model discloses a horizontal pipe falling film heat exchanger 19's layer is equipped with partition surface 32, and partition surface 32 is to pass elbow 29 sealedly and is sealing connection with furnace body 141 inner wall, and furnace body 141 outside still is equipped with communicating pipe 33, and partition surface 32 borrows by communicating

pipe

33 and 31 intercommunications of layer-by-layer liquid distributor, and the setting of partition surface 32 is for the better nitrogen protection device of making things convenient for accomplishes nitrogen gas replacement operation.

Referring to fig. 1, the liquid working medium inlet 25 of the present invention is connected to the collecting liquid distributor 20 via a first pipeline 34. The collecting liquid distributor 20 mixes the collected liquid working medium with the liquid working medium flowing from the first pipeline 34 and uniformly sprays the mixed liquid working medium to the outer surface of the hearth 17 to form film flow and exchange heat, so that the heat exchange of the hearth 17 can be increased by communicating the liquid working medium inlet 25 with the collecting liquid distributor 20 through the first pipeline 34, and the cooling of the hearth 17 is increased.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.

Claims

1. The utility model provides a horizontal pipe falling liquid film formula heat carrier furnace, a serial communication port, includes the furnace body, the inside top-down of furnace body is equipped with liquid distributor, horizontal pipe falling liquid film formula heat exchanger in proper order, collects liquid distributor, furnace, the outside top-down of furnace body is equipped with liquid working medium import, flue gas collection box, combustor, liquid working medium export in proper order, liquid working medium import with the liquid distributor intercommunication, the combustor is located the furnace head end, the upper portion of furnace tail end is equipped with flue gas distributor, flue gas distributor borrows by horizontal pipe falling liquid film formula heat exchanger with flue gas collection box intercommunication.

2. The horizontal tube falling film heat carrier furnace according to claim 1, wherein the horizontal tube falling film heat exchanger comprises a plurality of heat exchange tubes, and the plurality of heat exchange tubes are arranged in an array in multiple layers and multiple columns.

3. The horizontal tube falling film heat carrier furnace according to claim 2, wherein each heat exchange tube in the same row of the horizontal tube falling film heat exchanger is connected in series by an elbow to form a plurality of rows of vertically parallel S-shaped passages, and the plurality of rows of S-shaped passages are connected in parallel between the flue gas distributor and the flue gas header.

4. The horizontal tube falling film heat carrier furnace according to claim 3, wherein liquid distributors corresponding to the heat exchange tubes are arranged between the layers of the horizontal tube falling film heat exchanger.

5. The horizontal tube falling film heat carrier furnace according to claim 4, wherein a partition surface is arranged between the layers of the horizontal tube falling film heat exchanger, the partition surface penetrates through the elbow in a sealing manner and is connected with the inner wall of the furnace body in a sealing manner, a communicating tube is further arranged outside the furnace body, and the partition surface is communicated with the interlayer liquid distributor through the communicating tube.

6. The horizontal tube falling film heat carrier furnace according to claim 3, characterized in that elbow liquid distributors corresponding to the elbows are further arranged between the layers of the horizontal tube falling film heat exchangers.

7. The horizontal tube falling film heat carrier furnace according to claim 1, wherein the liquid working medium inlet is communicated with the collecting and distributing device through a first pipeline.

8. A heat carrier heating furnace system is characterized by comprising a liquid working medium groove and a heat utilization device, wherein a circulating pump is arranged in the liquid working medium groove, the heat carrier heating furnace further comprises the horizontal pipe falling film type heat carrier furnace according to any one of claims 1 to 7, the liquid working medium groove is communicated with the horizontal pipe falling film type heat carrier furnace to form a first circulating loop, and the liquid working medium groove is communicated with the heat utilization device to form a second circulating loop.

9. The heat carrier heating furnace system of claim 8, wherein the number of the horizontal tube falling film heat carrier furnaces is at least two, and the horizontal tube falling film heat carrier furnaces are arranged in parallel.

10. The heat carrier heating furnace system as claimed in claim 8, wherein there are at least two horizontal tube falling film heat carrier furnaces, the horizontal tube falling film heat carrier furnaces are arranged in series, the number of liquid working medium tanks corresponds to the number of the horizontal tube falling film heat carrier furnaces, and the second circulation loop is provided with expansion tanks.