CN209689432U

CN209689432U - A kind of heat exchange of catalytic cracking unit desulfurization fume takes hot systems

Info

Publication number: CN209689432U
Application number: CN201920366319.4U
Authority: CN
Inventors: 许栋五; 虞辉; 许煜
Original assignee: LUOYANG SENDE PETROCHEMICAL ENGINEERING Co Ltd
Current assignee: LUOYANG SENDE PETROCHEMICAL ENGINEERING Co Ltd
Priority date: 2019-03-20
Filing date: 2019-03-20
Publication date: 2019-11-26
Anticipated expiration: 2029-03-20

Abstract

A kind of heat exchange of catalytic cracking unit desulfurization fume takes hot systems, and flue gas heat collector is arranged above flue gas heat collector pedestal, and chimney is arranged in flue gas heat collector side, and pressure conveying box is arranged in the flue gas heat collector other side；Heat exchange bobbin carriage group is set in setting heat-exchanger rig in the middle part of flue gas heat collector, the heat exchange pipeline of cast iron is respectively set in the bobbin carriage group that exchanges heat；The heat-exchanging water of flowing is set as in cast iron heat exchange pipeline in heat exchange bobbin carriage group；The heat exchange flue gas from top to bottom flowed is set as between cast iron heat exchange pipeline outside in heat exchange bobbin carriage group；The flue gas heat exchange heat collector of the utility model is accessed by the smoke discharging pipe after catalytic cracking by upper end, tap water is conveyed by pressure water pump, it is generator, heat distribution pipeline conveying hot water or hot gas with the flue gas heat exchange outside cast-iron pipe in cast-iron pipe group that high pressure blower conveying air, which respectively enters,；Energy conservation and environmental protection creates huge economic benefit.

Description

A kind of heat exchange of catalytic cracking unit desulfurization fume takes hot systems

Technical field

The utility model relates to the recycling of Effect of Catalysis In Petrochemistry cracking unit flue gas after desulfurization heat exchange heat collector, especially one kind is urged Change the heat exchange of cracking unit desulfurization fume and takes hot systems.

Background technique

Currently, after chimney is discharged in the flue gas after petroleum chemical enterprise's catalytic cracking unit desulfurization, due to what is discharged after catalytic cracking Flue-gas temperature be 180 DEG C -160 DEG C between, high-temperature flue gas is mixed with cold air, cause the steam in flue gas condense suddenly formed it is white Cigarette has become protrusion and causes visual pollution, and the recent environmental requirement in China is higher, and local government has put into effect atmosphere successively and controlled The new rule of reason, and in provincial standard the unprecedented Con trolling index flue gas for referring to white cigarette discharge take off it is white.Therefore eliminating white smoke at The environmental issue attached great importance to is needed for industries such as firepower electric power, coking, kiln, steel, chemical industry；Especially in winter, petrochemical industry enterprise The regeneration fume from catalytic cracking of industry is substantially all using wet method sulphur removing and dust removing technology, but also contains particulate matter etc. in flue gas, with The raising of environmental requirement, it is difficult to meet environmental requirements, qualified discharge；In view of the foregoing, it is proposed that a kind of catalytic cracking unit Desulfurization fume heat exchange takes hot systems.

Utility model content

The purpose of this utility model is to overcome the flue gas discharges after existing petroleum chemical enterprise's catalytic cracking unit desulfurization After chimney, the environmental protection attached great importance to is needed to ask since eliminating white smoke becomes the industries such as firepower electric power, coking, kiln, steel, chemical industry Topic；Especially in winter, the regeneration fume from catalytic cracking of petroleum chemical enterprise is substantially all using wet method sulphur removing and dust removing technology, but in flue gas Also containing particulate matter etc., with the raising of environmental requirement, it is difficult to meet environmental requirements, qualified discharge, by reasonably designing, mention Hot systems are taken for a kind of heat exchange of catalytic cracking unit desulfurization fume, the flue gas heat exchange heat collector of the utility model is split by catalysis Smoke discharging pipe after change is accessed by upper end, and flue gas penetrates through from top to down, after heat exchange of the heat-exchanger rig using heat exchange bobbin carriage group, under End discharge temperature is reduced to 100 DEG C or less low-temperature flue gas；It is transversely mounted cast-iron pipe group in heat exchange bobbin carriage group, pressure conveying box Left end enters, the tap water of right end discharge or air enter in the cast-iron pipe in heat exchange bobbin carriage group, can in pressure conveying box High pressure blower is changed to using hydraulic devices；Pressure water pump conveys tap water, and high pressure blower air, tap water or air can divide Jin Ru not be in cast-iron pipe group with the flue gas heat exchange outside cast-iron pipe, the hot water temperature after heat exchange is between 80 DEG C to 100 DEG C, The temperature of flue gas heat exchange is 110 DEG C to 130 ° of hot gas, by hot-water outlet conduits be generator, heat distribution pipeline convey hot water or Hot gas；The utility model uses cast tube group structure, improves waste heat recycling and uses rate corrosion-resistant, flue gas heat exchange heat collector can at least make With 6 years, guarantee 3 years；Outer framework uses conventional carbon steel structure, and heat exchanger tube uses cast tube form, maintains the high heat exchange effect of metal Rate, it is ensured that the corrosion of resistance to flue gas dew point carries out heat exchange while reducing exhaust gas temperature and takes heat, and heat exchange takes the heat energy of recuperation of heat Enough offer power generations, heat supply, energy-saving and emission-reduction, heat recovery, chimney no longer discharge white cigarette；Improve heat exchange efficiency.Fuel is saved, It beautifies the environment, creates huge economic benefit, social benefit,

The utility model to achieve the goals above, adopts the following technical scheme that a kind of catalytic cracking unit desulfurization fume Heat exchange takes hot systems, and the catalytic cracking unit desulfurization fume heat exchange heat collector is by flue gas heat collector, heat-exchanger rig, changes Heat pipe case group, chimney, pressure conveying box, flue gas heat collector pedestal, flue gas main pipeline, smoke discharging pipe, cooling water inlet pipeline, hot water Outlet conduit, water tank frame body, hot water pipeline frame body, cold water main pipe road, gas inlet case, exhanst gas outlet case, low temperature inlet box, height Warm EXPORT CARTON, case group side plate, pore plate, bobbin carriage flue gas mouth are constituted；Flue gas heat collector, flue gas are set above flue gas heat collector pedestal Heat collector two sides wall runs through reserved pore, and floss hole is reserved in flue gas heat collector pedestal lower part side, and flue gas heat collector side is set Chimney is set, floss hole is reserved in chimney lower part, and pressure conveying box is arranged in the flue gas heat collector other side, between pressure conveying box and ground Water tank frame body is set, and pressure conveying box left end, right end symmetrically reserve the import of water supply pipe, outlet；In the middle part of flue gas heat collector Heat-exchanger rig is set, cavity is set as in the middle part of heat-exchanger rig, setting heat exchange bobbin carriage group in cavity, heat exchange bobbin carriage group is set at least to One row heat exchange bobbin carriage, a column heat exchange bobbin carriage set at least to a heat exchange bobbin carriage；The left end of heat exchange bobbin carriage group is symmetrically set with right end Pore plate is set, left end is corresponding on the pore plate of right end to be evenly distributed with pore, is respectively set in corresponding pore between the pore plate of both ends The heat exchange pipeline of cast iron；

Low temperature inlet box, the pore plate side setting of cooling water inlet right end is arranged in the pore plate side of heat exchange bobbin carriage group left end Hot outlet case；Cold water main pipe road is set in the import of pressure conveying box left end, pressure conveying box right end water outlet and low temperature into Cooling water inlet pipeline is set between mouth case oral area, is arranged between hot outlet case oral area and generator unit or heating power heat supply pipeline Hot water pipeline frame body is arranged in hot-water outlet conduits between hot-water outlet conduits and ground, the cast iron heat exchanger tube in the bobbin carriage group that exchanges heat The heat-exchanging water of flowing is set as in road；The pore of the pore plate of the two neighboring heat exchange bobbin carriage of one row corresponds to sealed set, a column The bobbin carriage flue gas mouth of two neighboring heat exchange bobbin carriage correspond to sealed set；

Exchange heat bobbin carriage group in each heat exchange bobbin carriage before, two sides behind be symmetrical arranged case group side plate, exchange heat bobbin carriage group In suitable for reading, the lower mouth of each heat exchange bobbin carriage be symmetrically reserved as the bobbin carriage flue gas mouth of the bobbin carriage flue gas mouth of import, outlet；Heat exchanger tube The suitable for reading of case group is set as gas inlet case, and the lower mouth of heat exchange bobbin carriage group is set as exhanst gas outlet case；Gas inlet case oral area is set Set flue gas main pipeline, smoke discharging pipe be set between exhanst gas outlet case oral area and the smoke outlet of chimney, in the bobbin carriage group that exchanges heat with cast iron The heat exchange flue gas from top to bottom flowed is set as between on the outside of heat exchange pipeline.

Process flow: in the heat transfer process of flue gas and cold water, flue gas after Effect of Catalysis In Petrochemistry cracking unit desulfurization be 160 DEG C extremely 180 DEG C of high temperature, high-temperature flue gas are continuously conveyed by pressure into flue gas main pipeline, and the high-temperature flue gas in flue gas main pipeline passes through Gas inlet case enters in heat exchange bobbin carriage group.

High-temperature flue gas in heat exchange bobbin carriage group is dispersed to exchange heat when passing through cast iron heat exchange pipeline, and high-temperature flue gas is by dividing Dissipating is low-temperature flue gas after exchanging heat, and low-temperature flue gas is 100 DEG C of temperature below, and low-temperature flue gas is continuous after entering in exhanst gas outlet case It is discharged into smoke discharging pipe, low-temperature flue gas is discharged into atmosphere after entering chimney by smoke pipeline.

High-temperature flue gas enters heat exchange bobbin carriage group while exchanged heat, and cold water main pipe road is continuously to be provided from pressure conveying box Water, the high pressure tap water in pressure conveying box enter low temperature inlet box by cooling water inlet pipeline, and high pressure tap water passes through low Warm inlet box enters in cast iron heat exchange pipeline simultaneously, the tap water temperature after being exchanged heat by cast iron heat exchange pipeline be 80 DEG C extremely Hot water between 100 DEG C, the hot water after the heat exchange of cast iron heat exchange pipeline is introduced into hot outlet case, subsequently into hot-water outlet conduits In, hot-water outlet conduits provide the hot water between 80 DEG C to 100 DEG C for engine or heat distribution pipeline.

When needing flue gas heat exchange is hot gas, the hydraulic devices in pressure conveying box are changed to high pressure blower, and air is by pressing Power blower cold water main pipe road suction pressure conveying box, pressure conveying box conveying air pass sequentially through pressure conveying box, cooling water inlet Pipeline, low temperature inlet box, cast iron heat exchange pipeline in exchange heat, be the hot gas that temperature is 110 DEG C to 130 DEG C after heat exchange.

The utility model has the advantages that the flue gas heat exchange heat collector of the utility model is by the smoke discharging pipe after catalytic cracking by upper termination Enter, flue gas penetrates through from top to down, after heat exchange of the heat-exchanger rig using heat exchange bobbin carriage group, is reduced to 100 DEG C by lower end discharge temperature Following low-temperature flue gas；Be transversely mounted cast-iron pipe group in heat exchange bobbin carriage group, the left end of pressure conveying box enters, right end discharge from Water or air enter in the cast-iron pipe in heat exchange bobbin carriage group, are able to use hydraulic devices in pressure conveying box and are changed to high pressure Blower；Pressure water pump conveys tap water, high pressure blower air, tap water or air can respectively enter in cast-iron pipe group with casting Flue gas heat exchange outside iron pipe conduit, the hot water temperature after heat exchange are between 80 DEG C to 100 DEG C, and the temperature of flue gas heat exchange is 110 DEG C It is generator, heat distribution pipeline conveying hot water or hot gas by hot-water outlet conduits to 130 ° of hot gas；The utility model is using casting Pipe group structure improves waste heat recycling and uses rate corrosion-resistant, and flue gas heat exchange heat collector is at least able to use 6 years, guarantee 3 years；Outer framework Using conventional carbon steel structure, heat exchanger tube uses cast tube form, maintains the high heat exchange efficiency of metal, it is ensured that the corruption of resistance to flue gas dew point Erosion carries out heat exchange while reducing exhaust gas temperature and takes heat, and heat exchange takes the heat of recuperation of heat to be capable of providing power generation, heat supply, energy conservation Emission reduction, heat recovery, chimney no longer discharge white cigarette；Improve heat exchange efficiency.Fuel is saved, is beautified the environment, is created huge Economic benefit, social benefit,

Detailed description of the invention

The utility model is described in further detail with reference to the accompanying drawing:

Fig. 1 is general assembly structural schematic diagram；

Fig. 2 is the import and export mix schematic diagram of Fig. 1；

Fig. 3 is the heat removing tube box structure schematic diagram of Fig. 1；

In Fig. 1,2,3: flue gas heat collector 1, heat-exchanger rig 1-1, heat exchange bobbin carriage group 1-2, chimney 2, pressure conveying box 3, cigarette Gas heat collector pedestal 4, flue gas main pipeline 5, smoke discharging pipe 6, cooling water inlet pipeline 7, hot-water outlet conduits 8, water tank frame body 9, heat Waterpipe frame body 10, cold water main pipe road 11, gas inlet case 12, exhanst gas outlet case 13, low temperature inlet box 14, hot outlet case 15, case group side plate 16, pore plate 17, bobbin carriage flue gas mouth 18.

Specific embodiment

The utility model is described in further detail with specific embodiment with reference to the accompanying drawing:

Flue gas heat collector 1 is set above flue gas heat collector pedestal 4, and 1 two sides wall of flue gas heat collector runs through reserved pore, cigarette Floss hole is reserved in 4 lower part side of gas heat collector pedestal, and chimney 2 is arranged in 1 side of flue gas heat collector, and floss hole is reserved in 2 lower part of chimney, Pressure conveying box 3 is arranged in 1 other side of flue gas heat collector, and water tank frame body 9, pressure conveying are arranged between pressure conveying box 3 and ground 3 left end of case, right end symmetrically reserve the import of water supply pipe, outlet；Heat-exchanger rig 1-1, heat exchange are set in the middle part of flue gas heat collector 1 Cavity is set as in the middle part of device 1-1, setting heat exchange bobbin carriage group 1-2 in cavity, heat exchange bobbin carriage group 1-2 set at least to row heat exchange Bobbin carriage, a column heat exchange bobbin carriage set at least to a heat exchange bobbin carriage；The left end of heat exchange bobbin carriage group 1-2 and right end are symmetrical arranged pore Plate 17, left end is corresponding on the pore plate 17 of right end to be evenly distributed with pore, is respectively set in corresponding pore between both ends pore plate 17 The heat exchange pipeline of cast iron；

Low temperature inlet box 14, the pore plate of cooling water inlet right end is arranged in 17 side of pore plate of the heat exchange left end bobbin carriage group 1-2 Hot outlet case 15 is arranged in 17 sides；Cold water main pipe road 11 is set in the import of 3 left end of pressure conveying box, and pressure conveying box 3 is right Bring out setting cooling water inlet pipeline 7,15 oral area of hot outlet case and generator unit between 14 oral area of the mouth of a river and low temperature inlet box Or hot-water outlet conduits 8 are set between heating power heat supply pipeline, hot water pipeline frame body is set between hot-water outlet conduits 8 and ground The heat-exchanging water of flowing is set as in cast iron heat exchange pipeline in 10, the bobbin carriage group 1-2 that exchanges heat；The two neighboring heat exchange bobbin carriage of one row The pore of pore plate 17 corresponds to sealed set, the corresponding sealed set of the bobbin carriage flue gas mouth 18 of the two neighboring heat exchange bobbin carriage of a column；

Exchange heat bobbin carriage group 1-2 in each heat exchange bobbin carriage before, two sides behind be symmetrical arranged case group side plate 16, heat exchanger tube Suitable for reading, the lower mouth of each heat exchange bobbin carriage is symmetrically reserved as the bobbin carriage flue gas of the bobbin carriage flue gas mouth 18 of import, outlet in case group 1-2 Mouth 18；The suitable for reading of heat exchange bobbin carriage group 1-2 is set as gas inlet case 12, and the lower mouth of heat exchange bobbin carriage group 1-2 is set as exhanst gas outlet Case 13；Flue gas main pipeline 5 is arranged in 12 oral area of gas inlet case, is arranged between 13 oral area of exhanst gas outlet case and the smoke outlet of chimney 2 Smoke discharging pipe 6, in the bobbin carriage group 1-2 that exchanges heat on the outside of cast iron heat exchange pipeline between be set as the heat exchange flue gas from top to bottom flowed.

Claims

1. a kind of heat exchange of catalytic cracking unit desulfurization fume takes hot systems, be by: flue gas heat collector (1), heat-exchanger rig (1-1), Exchange heat bobbin carriage group (1-2), chimney (2), pressure conveying box (3), flue gas heat collector pedestal (4), flue gas main pipeline (5), smoke exhaust pipe Road (6), cooling water inlet pipeline (7), hot-water outlet conduits (8), water tank frame body (9), hot water pipeline frame body (10), cold water main pipe road (11), gas inlet case (12), exhanst gas outlet case (13), low temperature inlet box (14), hot outlet case (15), case group side plate (16), pore plate (17), bobbin carriage flue gas mouth (18) are constituted；It is characterized by: setting flue gas takes above flue gas heat collector pedestal (4) Hot device (1), flue gas heat collector (1) two sides wall run through reserved pore, and flue is reserved in flue gas heat collector pedestal (4) lower part side Mouthful, chimney (2) are arranged in flue gas heat collector (1) side, and floss hole, the setting of flue gas heat collector (1) other side are reserved in chimney (2) lower part Water tank frame body (9) are arranged between pressure conveying box (3) and ground, pressure conveying box (3) left end, right end pair in pressure conveying box (3) Claim import, the outlet of reserved water supply pipe；Heat-exchanger rig (1-1) is set in the middle part of flue gas heat collector (1), heat-exchanger rig (1-1) Middle part is set as cavity, setting heat exchange bobbin carriage group (1-2) in cavity, and heat exchange bobbin carriage group (1-2) sets at least to row's heat exchanger tube Case, a column heat exchange bobbin carriage set at least to a heat exchange bobbin carriage；The left end of heat exchange bobbin carriage group (1-2) and right end are symmetrical arranged pore Plate (17), left end is corresponding on the pore plate (17) of right end to be evenly distributed with pore, divides in corresponding pore between both ends pore plate (17) Not She Zhi cast iron heat exchange pipeline.

2. a kind of catalytic cracking unit desulfurization fume heat exchange according to claim 1 takes hot systems, it is characterised in that: heat exchange Low temperature inlet box (14) are arranged in pore plate (17) side of the left end bobbin carriage group (1-2), the pore plate (17) one of cooling water inlet right end Hot outlet case (15) are arranged in side；Cold water main pipe road (11) are set in the import of pressure conveying box (3) left end, pressure conveying box (3) between right end water outlet and low temperature inlet box (14) oral area be arranged cooling water inlet pipeline (7), hot outlet case (15) oral area with Hot-water outlet conduits (8) are set between generator unit or heating power heat supply pipeline, are arranged between hot-water outlet conduits (8) and ground Hot water pipeline frame body (10), heat exchange bobbin carriage group (1-2) in cast iron heat exchange pipeline in be set as flowing heat-exchanging water；The phase of one row The pore of the pore plate (17) of adjacent two heat exchange bobbin carriage corresponds to sealed set, the bobbin carriage flue gas of the two neighboring heat exchange bobbin carriage of a column The corresponding sealed set of mouth (18).

3. a kind of catalytic cracking unit desulfurization fume heat exchange according to claim 1 takes hot systems, it is characterised in that: heat exchange In bobbin carriage group (1-2) each heat exchange bobbin carriage before, two sides behind be symmetrical arranged case group side plate (16), exchange heat bobbin carriage group (1- 2) suitable for reading, the lower mouth of each heat exchange bobbin carriage is symmetrically reserved as the bobbin carriage flue gas mouth of the bobbin carriage flue gas mouth (18) of import, outlet in (18)；Heat exchange the suitable for reading of bobbin carriage group (1-2) is set as gas inlet case (12), and the lower mouth of heat exchange bobbin carriage group (1-2) is set as cigarette Gas EXPORT CARTON (13)；Flue gas main pipeline (5) are arranged in gas inlet case (12) oral area, exhanst gas outlet case (13) oral area and chimney (2) Smoke outlet between smoke discharging pipe (6) are set, in heat exchange bobbin carriage group (1-2) on the outside of cast iron heat exchange pipeline between be set as by upper And the heat exchange flue gas of lower flowing.