CN107042032A - Energy-saving graphite multitube smoke duster, its method of work and its repair method - Google Patents
Energy-saving graphite multitube smoke duster, its method of work and its repair method Download PDFInfo
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- CN107042032A CN107042032A CN201710127386.6A CN201710127386A CN107042032A CN 107042032 A CN107042032 A CN 107042032A CN 201710127386 A CN201710127386 A CN 201710127386A CN 107042032 A CN107042032 A CN 107042032A
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- graphite
- pipe
- water
- tube plate
- upper cover
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 194
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 183
- 239000010439 graphite Substances 0.000 title claims abstract description 183
- 238000000034 method Methods 0.000 title claims abstract description 70
- 239000000779 smoke Substances 0.000 title claims abstract description 31
- 230000008439 repair process Effects 0.000 title claims abstract description 22
- 239000003546 flue gas Substances 0.000 claims abstract description 62
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 57
- 239000000428 dust Substances 0.000 claims abstract description 20
- 238000004140 cleaning Methods 0.000 claims abstract description 10
- 238000005304 joining Methods 0.000 claims abstract description 7
- 230000000694 effects Effects 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 95
- 238000007789 sealing Methods 0.000 claims description 70
- 230000006378 damage Effects 0.000 claims description 57
- 239000011230 binding agent Substances 0.000 claims description 37
- 230000008569 process Effects 0.000 claims description 21
- 239000003795 chemical substances by application Substances 0.000 claims description 17
- 238000001723 curing Methods 0.000 claims description 17
- 238000012360 testing method Methods 0.000 claims description 17
- 238000001035 drying Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 16
- 238000010276 construction Methods 0.000 claims description 14
- 238000013007 heat curing Methods 0.000 claims description 14
- 239000004927 clay Substances 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 12
- 230000008859 change Effects 0.000 claims description 11
- 239000007767 bonding agent Substances 0.000 claims description 10
- 238000009833 condensation Methods 0.000 claims description 10
- 230000005494 condensation Effects 0.000 claims description 10
- 238000012423 maintenance Methods 0.000 claims description 10
- 208000037656 Respiratory Sounds Diseases 0.000 claims description 9
- 238000007689 inspection Methods 0.000 claims description 9
- 229920005989 resin Polymers 0.000 claims description 9
- 239000011347 resin Substances 0.000 claims description 9
- 238000012546 transfer Methods 0.000 claims description 9
- 230000032683 aging Effects 0.000 claims description 8
- 231100001261 hazardous Toxicity 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 8
- 235000019504 cigarettes Nutrition 0.000 claims description 7
- 239000008187 granular material Substances 0.000 claims description 7
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 7
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 7
- AEEAZFQPYUMBPY-UHFFFAOYSA-N [I].[W] Chemical compound [I].[W] AEEAZFQPYUMBPY-UHFFFAOYSA-N 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 6
- 238000011900 installation process Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 238000012856 packing Methods 0.000 claims description 6
- 238000005498 polishing Methods 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 6
- 230000002269 spontaneous effect Effects 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 5
- 230000035939 shock Effects 0.000 claims description 5
- 238000007711 solidification Methods 0.000 claims description 5
- 230000008023 solidification Effects 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 4
- 239000000498 cooling water Substances 0.000 claims description 4
- 238000007598 dipping method Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 244000137852 Petrea volubilis Species 0.000 claims description 3
- 239000000654 additive Substances 0.000 claims description 3
- 230000000996 additive effect Effects 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 230000002411 adverse Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 3
- 238000002474 experimental method Methods 0.000 claims description 3
- 210000003746 feather Anatomy 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 238000007710 freezing Methods 0.000 claims description 3
- 230000008014 freezing Effects 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 239000003550 marker Substances 0.000 claims description 3
- 230000035772 mutation Effects 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000000047 product Substances 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 3
- 230000035882 stress Effects 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 238000005056 compaction Methods 0.000 claims description 2
- 238000004026 adhesive bonding Methods 0.000 claims 1
- 230000008595 infiltration Effects 0.000 claims 1
- 238000001764 infiltration Methods 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 238000003756 stirring Methods 0.000 claims 1
- 239000002245 particle Substances 0.000 abstract description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 229920002943 EPDM rubber Polymers 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 4
- 239000002585 base Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910003481 amorphous carbon Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- CSKNSYBAZOQPLR-UHFFFAOYSA-N benzenesulfonyl chloride Chemical compound ClS(=O)(=O)C1=CC=CC=C1 CSKNSYBAZOQPLR-UHFFFAOYSA-N 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000007770 graphite material Substances 0.000 description 2
- 238000005087 graphitization Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910021383 artificial graphite Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- SYSQUGFVNFXIIT-UHFFFAOYSA-N n-[4-(1,3-benzoxazol-2-yl)phenyl]-4-nitrobenzenesulfonamide Chemical class C1=CC([N+](=O)[O-])=CC=C1S(=O)(=O)NC1=CC=C(C=2OC3=CC=CC=C3N=2)C=C1 SYSQUGFVNFXIIT-UHFFFAOYSA-N 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/02—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising gravity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/302—Sulfur oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
- B01D2257/404—Nitrogen oxides other than dinitrogen oxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The present invention provides a kind of energy-saving graphite multitube smoke duster, its method of work and its repair method, the smoke duster includes housing, upper cover and low head, the lower section of the low head, which is provided with, removes ash bin, the lower end of the dust cleaning case is provided with ash disposal mouthful, provided with graphite tube bank in the housing, the joining place of the upper cover and housing is horizontal upper graphite tube plate, the joining place of the low head and housing is horizontal lower graphite tube plate, the tube side of the graphite tube bank connects the inner chamber of upper cover and low head by upper graphite tube plate with lower graphite tube plate, the upper cover is provided with high-temperature flue gas entry, the low head is exported provided with low-temperature flue gas, flowing has flue gas in the tube side of the graphite tube bank.Dedusting and heat exchange element of the present invention using graphite-pipe as boiler smoke, because it has good heat conductivility and low-affinity, particle dust can be separated under deadweight and effect of inertia from flue gas, and will not be sticked on graphite tube wall, and dedusting is thorough.
Description
Technical field
The present invention relates to a kind of smoke dust-removing equipment, and in particular to a kind of energy-saving graphite multitube smoke duster, its work
Make method and its repair method.
Background technology
Energy-conserving and environment-protective are the fundamental state policies of country, are the important embodiments for practicing the Scientific Outlook on Development.China is that an energy disappears
Big country is consumed, with the fast development of China's economy, energy demand increased dramatically, energy shortage is restricted to economic development further to be added
Play, is faced with huge resource and environmental pressure.One of them topmost reason is that energy utilization rate is low.Promote high efficiency of energy
Using and recycle, be alleviate energy shortage contradiction fundamental solution.
Boiler is a kind of larger special equipment of energy consumption, and its energy consumption accounts for the AND ENERGY RESOURCES CONSUMPTION IN CHINA total amount overwhelming majority, pot
Stove is saved and emission reduction reduces pollutant emission for China, reduces its level of power consumption, and the economic benefit of enterprise is played
Very important meaning.Because China's industrial mode of production is also in labour-intensive and extensive stage, factory steam side
Formula is more dispersed, and Industrial Boiler is using scattered steam supply, and most of medium-sized and small enterprises using energy-conservation, consumption reduction, emission-reduction technology and are not arranged
Apply.
It there are problems that high fume temperature, the insufficient, boiler thermal output that burns are low during industrial boiler operation.Row
Energy total amount in cigarette heat loss is huge, and this part of energy is made full use of and comes preheated air and water, improve air themperature with
And feed temperature, efficiency of combustion can be improved in certain degree.Due to containing sulphur in the fuel such as coal, oil, natural gas, combustion
Oxysulfide would generally be produced during burning, sulfuric acid vapor is formed after being combined with vapor.When the metallic walls of heated surface at the end of boiler
Face temperature will form liquid sulfuric acid (referred to as condensing) less than the set point (being referred to as acid dew point) of sulfuric acid vapor on its surface, long
Since phase, economizer causes corrosion, or even perforated phenomenon to occur often due to condensation, has a strong impact on the operation safety of boiler,
So Industrial Boiler is all to alleviate the generation of condensation and corrosion phenomenon by keeping higher exhaust gas temperature.But at present, work
Industry boiler dust removal equipment is simple or smokeless treatment measures, granule dust, SO in flue gas2And NO2Pollutant emission is serious.
The class nonmetallic materials that graphite is made up of carbon, belong to a kind of allotrope of elemental carbon.Carbon
There are three kinds of isomers：One kind is amorphous carbon, such as charcoal, coke, carbon black；Other two is crystalline carbon, i.e. graphite and Buddha's warrior attendant
Stone.Amorphous carbon can be converted into graphite through high-temperature process, and graphite can be converted into again under catalyst action and high pressure, hot conditions
Diamond.Graphite belongs to hexagonal crystal system, and each aspect is made up of hexagon ring, and aspect is parallel with aspect, in orderly overlapping crystal knot
Structure.
Graphite has many special natures due to its special construction：1), heat-resisting quantity：The fusing point of graphite be 3850 ±
50 DEG C, boiling point is 4250 DEG C, even if through superhigh temperature electric arc calcination, the loss very little of weight, thermal coefficient of expansion also very little, graphite is strong
Degree is improved and strengthened with temperature.2), conductive, thermal conductivity：The electric conductivity of graphite is higher than general nonmetallic mineral 100 times, thermal conductivity
The metal materials such as steel, iron can be several times as much as.3), lubricity：The greasy property of graphite depends on the size of graphite flakes, and scale is got over
Greatly, coefficient of friction is smaller, and greasy property is better.4), chemical stability：Graphite is having good chemical stability, can be acidproof, resistance to
The corrosion of alkali and organic solvent-resistant.5) plasticity：The good toughness of graphite, can be processed into very thin thin slice.6), thermal shock resistance：Stone
Ink is able to take the acute variation of temperature and will not destroyed when using at normal temperatures, and during temperature jump, the Volume Changes of graphite are not
Greatly, it will not crack.
Graphite is divided to two kinds of native graphite and Delanium, and native graphite purity is low, tissue is loose, graphite equipment graphite material
Material is generally Delanium.Delanium is compressing by coke, pitch kneading, and air roasting is completely cut off in kiln, is typically existed
Kept for 20 days at 1300 DEG C, then through carrying out graphitization processing under 2400~3000 DEG C of high temperature.Delanium in roasting process, by
Escaped in organic matter in gaseous state, therefore it is in porous, therefore artificial graphite material typically (need to be mainly phenol by high polymer material
Urea formaldehyde) sealing of hole impregnation process is changed into impermeable graphite, could be used on chemical industry equipment.Impermeable graphite is divided into three kinds：
Impregnated graphite, die mould graphite, cast graphite.Impregnated graphite is by resin-impregnated graphite of impregnating agent different instructions, waterglass dipping
Graphite, bituminizing graphite；Die mould graphite is divided to two kinds of molding type and extrusion pressing type；Casting type graphite point normal pressure molded graphite, pressurization
Two kinds of molded graphite." affinity " between graphite and most of media is small, so die mould graphite surface is less scaling, works as boiler
When flue gas is with graphite contact, the granule dust in flue gas will not be accumulated on graphite surface.
Have it is above-mentioned understand, boiler smoke temperature is high, inside contains granule dust, and graphite has heat-resisting quantity, high-termal conductivity
And low-affinity, with graphite-pipe as dedusting, heat exchange element, the research topic such as dedusting, waste heat recovery to high temperature flue-gas from boiler
It is significant.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of energy-saving graphite multitube smoke duster, its method of work and
Granule dust in its repair method, high efficiente callback boiler smoke, energy-efficient, excellent cost performance stablizes durable.
In order to solve the above technical problems, embodiments of the invention provide a kind of energy-saving graphite multitube smoke duster, bag
Housing, upper cover and low head are included, the upper cover is connected to the top of housing, and the low head is connected to the lower section of housing,
The lower section of the low head, which is provided with, removes ash bin, and the lower end of the dust cleaning case is provided with ash disposal mouthful, and the housing is interior provided with graphite tube bank,
The joining place of the upper cover and housing is horizontal upper graphite tube plate, and the joining place of the low head and housing is horizontal lower graphite
Tube sheet, the upper and lower side of the graphite tube bank is connected with upper graphite tube plate and lower graphite tube plate respectively, and the pipe of graphite tube bank
The inner chamber of Cheng Liantong upper covers and low head, the upper cover is provided with high-temperature flue gas entry, and the low head is provided with low temperature
Flowing has flue gas in exhanst gas outlet, the tube side of the graphite tube bank；
Flowing has recirculated water in the shell side of the housing, and the bottom of the housing is provided with circulating water intake, the housing
Top is provided with circulating water outlet；
The outside of the low-temperature flue gas outlet is connected with exhaust pass, and the lower section of the exhaust pass is provided with reception condensation
Water-film Separator.
It is preferred that, resin impregnating graphite-pipe is selected in the graphite tube bank.
Wherein, by tetrafluoro packing, O-ring and differential combination sealing between the upper cover and housing, and flange is passed through
Connection.
Wherein, it is provided between the low head and housing on polytetrafluoroethylene sealing gasket piece, the upper cover and low head
It is equipped with manhole.
Further, the circulating water outlet is connected by hot-water line with water tank, and a wherein water side for the water tank passes through
Deaerating type of cycles is connected with boiler, and another water side is connected by hot water pipe with circulating water intake, close to circulation on the hot water pipe
Water circulating pump is provided with water inlet, the bottom of the housing, which is provided with cooling water inlet, the water tank, is connected to cold water pipe, the hot water
Valve is equipped with pipe, hot water pipe and cold water pipe.
Wherein, the water tank is provided with blow-down pipe.
Wherein, 4 ear formula support bases are evenly equipped with the outside of the housing, the top of the housing is connected with water by water pipe
Level alarm.
The embodiment of the present invention also provides a kind of method of work of energy-saving graphite multitube smoke duster, including flue gas ash removal
Process and flue gas heat exchange process；
The flue gas ash removal process is：Granule dust in the flue gas in tube side restrained into graphite is being conducted oneself with dignity and flowed
Separate, deposit to except being discharged after ash bin by ash disposal mouthful from flue gas under effect of inertia；Flue-gas temperature is dropped to below acid dew point, flue gas
Middle SO2、NO2Nebulized Deng hazardous medium condensation or liquid is separated from flue gas, be precipitated in heat exchanging segment in housing or in outlet cigarette
It is precipitated in road in water-film Separator.
Wherein, the flue gas heat exchange process liberated heat Q is calculated by following formula：
Q=G × C × (T1-T2) formula (1),
In formula, G is flue gas flow, m3/h；C is smoke density, kg/m3；T1For heat exchange before flue-gas temperature, DEG C；T2For heat exchange
Flue-gas temperature afterwards, DEG C；
The heat transfer area of heat exchanger is calculated by following formula：
In formula, Q is heat output, kJ；A is heat exchange area, m2；K is overall heat-transfer coefficient, kJ/m2·℃·h；Δ Tm is logarithm
MTD, DEG C；
Wherein, Δ Tm calculating according to two fluids flow direction be counter-current relationship depending on, during adverse current,
In formula, T1、T2The inlet and outlet temperature of --- -- flue gas, DEG C；t1、t2--- the inlet and outlet temperature of-recirculated water
Degree, DEG C.
The embodiment of the present invention also provides a kind of repair method of energy-saving graphite multitube smoke duster, including following step
Suddenly：
(1) graphite-pipe repair method
(1-1) graphite-pipe is damaged and cementing seam leakage cause includes：Damaged in transport installation process because of serious vibration,
Using caused by process impact of water hammer or temperature difference mutation, pressure increases punching suddenly in, operating process freezing due to ponding in the winter time
Hit damage, cause damage, the corrosion failure of corrosive medium, quality of item bad caused more than temperature in use；
(1-2) graphite-pipe damages the position of phenomenon and breakage：Except being caused to lose by strong lateral load impact shock and
Because the longitudinal crack and hydrophthalmia of the not good generation of graphite-pipe quality permeate, most of damage all occurs in graphite-pipe and graphite tube plate
On cementing position, because cementing seam splits, medium osmosis inside and outside graphite-pipe is caused, is also had and is broken or is corroded through in other positions
Hole；
(1-3) restorative procedure：1. the graphite-pipe number as damaged is few, using the graphite plug being consistent with graphite tube plate aperture, will
The graphite-pipe plate hole at the graphite-pipe two ends of damage is blocked with cementing method；2. the graphite-pipe number as damaged is more, all blocks shadow
Equipment heat exchange area is rung, the graphite of damage can be taken out, change new graphite-pipe；
(1-4) plugging
1-4-1) prepare
1. scene needs to have energization, water flowing, logical steam, the condition of logical compressed air, intends the upper and lower end socket of maintenance of equipment
Have already turned on, clean out internal debris and hazardous medium, be ready for rain-proof measure, it is ensured that construction area is not caught in the rain；
2. to needing the equipment cleaning, drying of plugging：First graphite tube plate is cleaned up with steam, hot water or chemical
Endoporus；
3. leakage detection：Single pressure testing leakage detection is carried out to every graphite-pipe, carried out using dry compressed air, Control experiment pressure
The general 0.2MPa of power, mark is carried out to the graphite-pipe that discovery has seepage and is recorded；
4. binding agent sample：Binding agent is done according to code according to the weather condition and same day weather condition of plan commencement date
Sample, to determine the proportioning and an amount of preparation of binding agent during formal construction；
1-4-2) construct
1. polish graphite tube plate endoporus：With round file, wire brush polishing graphite tube plate endoporus hole wall, remove impurity thereon,
Dirty layer, untill exposing graphite true qualities, grinding depth, which is more than, needs blocking region, is rushed if it find that graphite tube plate endoporus hole wall has
Brush or corrode and deeper pit, it is necessary to first be repaired with clay, blocked up again after after abundant solidification, it is impossible to expand graphite tube plate endoporus
Greatly, to ensure pitch of holes i.e. adhesive thickness in plug and graphite tube plate；
2. dry：After the polishing of graphite tube plate endoporus hole wall is qualified, each hole is toasted with iodine-tungsten lamp, ensures it dry
It is dry；
3. binding agent is allocated：The technique evaluated during according to preparation is operated, and proportioning is used according to sample determination has been done
Gauged platform balance weighs resin, graphite powder, and with counting cup meter curing agent, additive, first load weighted a collection of resin is poured into
In agitator, then graphite powder and curing agent are poured into, be stirred with agitator, mixing time 10-15min observes viscosity and mixed
Close uniform situation, it is well mixed after be poured in container, be sent to the scene for smearing binding agent, then do next group, binding agent will be with doing
With with, it is impossible to place the long time；4. bonding agent is smeared：It is firm for bonding, inside graphite plug outside and graphite-pipe plate hole all
Binding agent is smeared, needs to blow the ash in plug and graphite-pipe plate hole off with the compressed air of clean dried before smearing bonding agent
Dirt, plug front end and side are required for smearing bonding agent, and rotate uniform compaction, and thickness has been smeared no more than 1mm, binding agent
After, plug is pushed into inside graphite-pipe plate hole paragraph by paragraph, application of force is uniform, rotation is pushed, must not be eccentric, when blocking tube sheet, profit
Binding agent is prevented to be lost in Anti-lost block；5. heat cure：After binding agent spontaneous curing, heat cure is carried out, heat cure uses iodine tungsten
Lamp or the method for air-heater baking, are controlled in proper temperature and time；
1-4-3) construction precautions：
1. tubesheet holes need to be repaired by cleaning and drying；
2. repaired hole inner circle feather plucking；
3. blow off dust and uniformly smear binding agent, be not allow for blind area；
4. graphite plug must be segmented and fill in, and form the circumferential weld of full clay；
5. after spontaneous curing 24 hours, 48 hours need to be heated to being fully cured；
1-4-4) other attentions：
1. whether have in plug-hole needed for going through and be washed the pit to be formed；
2. whether there is crackle between the Kong Yukong on graphite tube plate or be abraded and be connected；
3. determine wearing bush or put the depth or thickness for washing away plate, it is ensured that get lodged in more than wearing bush；
4. marker number is carried out, prevents that wrong stifled, leakage is stifled；
1-4-5) test leakage detection
1. pressure is determined：0.8 times of design pressure, or 0.3MPa, not more than 0.35MPa only test shell side pressure；
2. pressure-measuring method：Shell side mouth of pipe blank off first, full of normal temperature clean water, emptying air checks whether there is seepage,
Then pump up, boosting must be slow, rises within 2 minutes 0.1MPa, and seen whether seepage, such as ne-leakage pressurize half an hour pressure
It is qualified not to be reduced to；
3. pressurize leakage detection：More than pressure 30min is kept, seepage is checked whether there is；
(1-5) changes pipe
When graphite-pipe, which damages radical, reaches total radical more than 20%, pipe reparation need to be changed or new equipment is changed, program is as follows：
1-5-1) pressure testing inspection determines fistulae position, drains the water away, dry or drying, carries out mark；
The hole of the bad pipe position of two ends graphite tube plate 1-5-2) is expanded to 1 ㎜ bigger than graphite-pipe external diameter, graphite tube plate is got into
Behind bottom, fistulae is ejected with new graphite-pipe or taken out using specific purpose tool, the graphite-pipe plate hole of expansion wipes into hair side with sand paper,
Length will align with the bonding plane of new graphite-pipe, after being cohered with clay, be tensed with stay bolt, should symmetrically and evenly be tightened during fastening,
Prevent step, cold curing 24 hours, then carry out with drying oven heat cure 48 hours at 130 DEG C；
(2) replacing options of pad and O-ring
The abort situation and the order of severity occurred according to equipment, takes different repair methods, if pad and Ο types are irised out
Existing seepage, it may be possible to just can be with due to caused by nut loosening or thermal expansion, adjusting at any time；If pad and Ο types circle are
Sew seriously, then overhauled by following methods through aging or damage：
At (2-1) Ο type circle sealings, it is necessary to which per tour is tested record, such as find that leakage needs on-call maintenance, it is careful
Check at sealing surface whether burn into aging or damage, whether Ο types circle meet the requirements, and needs symmetrically to apply when installing sealing ring flange
Inspection leak test need to be suppressed after power, reparation at sealing；
(2-2) changes Ο type circles：Differential jack-up is taken out the Ο type circles to be changed, put by the symmetrical differential fixing nut that comes loose
Enter new Ο types circle to compress with differential again, should symmetrically and evenly be tightened nut.Ο types circle used makes of plantation rubber bar, material
Fluorubber, PTFE or ethylene propylene diene rubber are selected according to dielectric property.New to change Ο type circles, length is suitable, it is impossible to too loose, joint
Place is using overlap joint, and the end of overlap two is whittled into less than the 30 ° gradients, neatly aligns and cemented with glue, outside winds several layers of four again
Fluorine raw material band.Ο types circle cut sides should be parallel to differential sealing surface during compression.
(2-3) changes sealing gasket：Upper cover must be dismantled by changing sealing gasket, check whether sealing surface damages, if any damage palpus
Repairing；Way of the way of sealing gasket with reference to Ο type circles.Sealing gasket makes of polytetrafluoro braided packing or rubber strip, material root
PTFE or ethylene propylene diene rubber, fluorubber are selected according to dielectric property.
(3) repair method of graphite tube plate
(3-1) source of damage：In transportation judder and when mechanical damage, fastening bolt it is unilateral firmly, more than making
Caused to damage with temperature and pressure, product material or construction quality is bad causes；
(3-2) damaged condition and position：General damage is to produce longitudinal crack, and graphite tube plate is damaged in this way, can also be influenceed
The cementing seam seepage of graphite-pipe, graphite-pipe needed for repair and replacement while repairing reason graphite tube plate；
(3-3) restorative procedure
Crackle both sides instrument widens crackle several millimeters on graphite tube plate, another processing one it is block-shaped similar with expansion seam and
The small 1mm of thickness or so impregnated graphite lath, the binding agent being stirred is applied to outside the inner face and small strip for expanding seam, then
Graphite lath is squeezed into expansion seam, it is ensured that the clay thickness in cementing seam two sides is uniform, then with the ratio graphite tube plate cut out
The slightly wider glass fabric of thickness circumferentially exerts oneself to curl after 2-3 circles when smearing cementing agent, is applied again outside glass fabric
Upper cementing agent, allows it to solidify, cold curing 24 hours, then is carried out with drying oven heat cure 48 hours at 130 DEG C, treating that cementing agent is complete
All solidstate rear can be used；
(3-4) overhauls points for attention
(3-4-1) impregnated graphite tube sheet and dipping graphite tube are a kind of good fragile materials of decay resistance, are shaken
Move, beat, colliding with is easy to damage, therefore must be handled with care in dismounting, installation process, and being placed on flat cushion
On, it should be specifically noted that the protection to sealing surface；
When (3-4-2) is dismantled and is assembled upper cover, it is necessary to using four hangers thereon according to hoisting operations guidelines,
Prevent from overturning, collide with；
When (3-4-3) dismantles upper cover, first upper cover must be hung with suspender, but suspender must not be too painstaking, and hoist cable stretches tight
It is tight, differential and Ο type circles are unclamped, upper cover is vertically sling or declines certain altitude (200-250mm) and then translates again,
Safe place is put into, sealing surface is protected；
(3-4-4) check sealing gasket and Ο types circle whether aging or damage, if weathered or damage, it is necessary to change same
The sealing gasket and Ο type circles of specification material of the same race are planted, checks whether sealing surface damages, must repairing if any damaging；
When (3-4-5) assembles upper cover, sealing surface must be cleaned out, and sealing gasket first is fixed on into upper cover or graphite-pipe
The sealing surface of plate has the region of sealing waterline, is inserted in the Ο type circles being ready for, then opposite according to dismounting upper cover handling
Upper cover handling in place, is directed at sealing surface, is hung upper cover with suspender by order, but suspender must not be too painstaking, and hoist cable stretches tight
Tight, four hoist cables must uniform force；
Stay bolt is passed through upper cover flange, differential, shell flange bolt hole by (3-4-6), now should be noted the pressure of differential
Tight nuts and washers will first be screwed on, and be adjusted to appropriate location；Four bolt positioning, adjustment can be first worn, in order to wear other spiral shells
Bolt.
(3-4-7) symmetrically and evenly tightens the nut of stay bolt outermost end, and differential clamp nut is then tightened again, tightens pressure
, it is necessary to which the filler in stuffing box is put well before blue clamp nut；
After the nut of (3-4-8) stay bolt is all tightened, check whether sealing pad position meets the requirements, bolt and nut stress
Whether uniform, qualified rear tube side water flowing, pressurization check at sealing whether there is seepage；Test pressure exceedes using pressure 0.05-
0.1MPa, it is not necessary to reach name plate rating.
When (3-4-9) drives again, when temperature is increased to 60-70 DEG C, inspection seals whether have seepage everywhere, if any oozing
Leakage needs emphasis to fasten blowby area bolt and nut, and other bolt and nuts also will be fastened suitably；
When (3-4-10) is dismantled and assembled low head, with reference to step (3-4-2)-(3-4-10).
The above-mentioned technical proposal of the present invention has the beneficial effect that：The present invention is using dedusting of the graphite-pipe as boiler smoke
And heat exchange element, because it has good heat conductivility and low-affinity, particle dust can be under deadweight and effect of inertia from cigarette
Separate, and will not be sticked on graphite tube wall in gas, dedusting is thorough；SO in flue gas2、NO2Nebulized Deng hazardous medium condensation
Or liquid is separated from flue gas, it is precipitated in housing or is precipitated in exhaust pass in water-film Separator in heat exchanging segment, reduces
The discharge of harmful substance.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is the structural representation after present invention installation；
Fig. 3 carries out maintenance schematic diagram during plugging for the upper graphite tube plate of the present invention；
Fig. 4 carries out maintenance schematic diagram during plugging for the lower graphite tube plate of the present invention.
Description of reference numerals：
1st, housing；2nd, upper cover；3rd, low head；4th, except ash bin；5th, graphite is restrained；6th, upper graphite tube plate；7th, lower graphite-pipe
Plate；8th, ash disposal mouthful；9th, high-temperature flue gas entry；10th, low-temperature flue gas is exported；11st, circulating water intake；12nd, circulating water outlet；13rd, go out
Mouth flue；14th, water-film Separator；15th, manhole；16th, water tank；17th, deaerating type of cycles；18th, water circulating pump；19th, cooling water inlet；20、
Blow-down pipe；21st, ear formula support base；22nd, water level alarm；23rd, plug；24th, bonding agent；25th, Anti-lost block；26th, steam vent；
27th, flash steam interface；28th, emptying hole.
Embodiment
To make the technical problem to be solved in the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and tool
Body embodiment is described in detail.
As shown in Figure 1 and Figure 2, a kind of energy-saving graphite multitube smoke duster, including housing 1, upper cover 2 and low head
3, the upper cover 2 is connected to the top of housing 1, and the low head 3 is connected to the lower section of housing 1, the upper cover 2 and housing
By tetrafluoro packing, O-ring and differential combination sealing between 1, and connected by flange.Set between the low head 2 and housing 1
Have and be equipped with manhole 15 on polytetrafluoroethylene sealing gasket piece, the upper cover 2 and low head 3.
The lower section of the low head 3, which is provided with, removes ash bin 4, and the lower end of the dust cleaning case 4 is provided with ash disposal mouthful 8, the housing 1
Provided with graphite tube bank 5, the graphite restrains 5 preferred resin impregnating graphite-pipes.
The joining place of the upper cover 2 and housing 1 is horizontal upper graphite tube plate 6, and the low head 3 is connected with housing 1
Place is horizontal lower graphite tube plate 7, and the upper and lower side of the graphite tube bank 5 is connected with upper graphite tube plate 6 and lower graphite tube plate 7 respectively,
And tube side connection upper cover 2 and the inner chamber of low head 3 of the graphite tube bank 5, the upper cover 2 is provided with high-temperature flue gas entry
9, the low head 3 has flue gas provided with low-temperature flue gas outlet 10, the interior flowing of tube side of the graphite tube bank 5.
The outside of the low-temperature flue gas outlet 10 is connected with exhaust pass 13, and the lower section of the exhaust pass 13 is provided with reception
The water-film Separator 14 of condensation.
Flowing has recirculated water in the shell side of the housing 1, and the bottom of the housing 1 is provided with circulating water intake 11, the shell
The top of body 1 is provided with circulating water outlet 12.
The circulating water outlet 12 is connected by hot-water line with water tank 16, the wherein water side of the water tank 16 by except
Oxygen system 17 is connected with boiler, and another water side is connected by hot water pipe with circulating water intake 11, close on the hot water pipe to follow
Water circulating pump 18 is provided with ring water inlet 11, the bottom of the housing 1, which is provided with cooling water inlet 19, the water tank 16, is connected to cold water
Valve is equipped with pipe, the hot-water line, hot water pipe and cold water pipe.
The water tank 16 is provided with blow-down pipe 20.
The outside of the housing 1 is evenly equipped with 4 ear formula support bases 21, and the top of the housing 1 is connected with water by water pipe
Level alarm 22.
The side that the top of housing 1 is located at upper graphite tube plate 6 is provided with steam vent 26, and opposite side is provided with flash steam interface
27, the bottom of housing 1 is provided with emptying hole 28 close to the place of lower graphite tube plate.
The method of work for the energy-saving graphite multitube smoke duster that the present invention is provided, including flue gas ash removal process and flue gas
Heat transfer process；Wherein,
The flue gas ash removal process is：Granule dust in the flue gas in tube side restrained into graphite is being conducted oneself with dignity and flowed
Separate, deposit to except being discharged after ash bin by ash disposal mouthful from flue gas under effect of inertia；Flue-gas temperature is dropped to below acid dew point, flue gas
Middle SO2、NO2Nebulized Deng hazardous medium condensation or liquid is separated from flue gas, be precipitated in heat exchanging segment in housing or in outlet cigarette
It is precipitated in road in water-film Separator.
The flue gas heat exchange process liberated heat Q is calculated by following formula：
Q=G × C × (T1-T2) formula (1),
In formula, G is flue gas flow, m3/h；C is smoke density, kg/m3；T1For heat exchange before flue-gas temperature, DEG C；T2For heat exchange
Flue-gas temperature afterwards, DEG C；
The heat transfer area of heat exchanger is calculated by following formula：
In formula, Q is heat output, kJ；A is heat exchange area, m2；K is overall heat-transfer coefficient, kJ/m2·℃·h；Δ Tm is logarithm
MTD, DEG C；
Wherein, Δ Tm calculating according to two fluids flow direction be counter-current relationship depending on, during adverse current,
In formula, T1、T2The inlet and outlet temperature of --- -- flue gas, DEG C；t1、t2--- the inlet and outlet temperature of-recirculated water
Degree, DEG C.
The repair method for the energy-saving graphite multitube smoke duster that the present invention is provided, comprises the following steps：
(1) graphite-pipe repair method
(1-1) graphite-pipe is damaged and cementing seam leakage cause includes：Damaged in transport installation process because of serious vibration,
Using caused by process impact of water hammer or temperature difference mutation, pressure increases punching suddenly in, operating process freezing due to ponding in the winter time
Hit damage, cause damage, the corrosion failure of corrosive medium, quality of item bad caused more than temperature in use；
(1-2) graphite-pipe damages the position of phenomenon and breakage：Except being caused to lose by strong lateral load impact shock and
Because the longitudinal crack and hydrophthalmia of the not good generation of graphite-pipe quality permeate, most of damage all occurs in graphite-pipe and graphite tube plate
On cementing position, because cementing seam splits, medium osmosis inside and outside graphite-pipe is caused, is also had and is broken or is corroded through in other positions
Hole；
(1-3) restorative procedure：1. the graphite-pipe number as damaged is few, using the graphite plug being consistent with graphite tube plate aperture, will
The graphite-pipe plate hole at the graphite-pipe two ends of damage is blocked with cementing method；This method, it is adaptable to which pipe number damages few situation
Under, provisional light maintenance processing is carried out, scene can be solved.2. the graphite-pipe number as damaged is more, all blocks influence equipment and changes
Hot area, the graphite of damage can be taken out, change new graphite-pipe；This repair method is more complicated, typically all needs to send our factory back to
Place under repair.
(1-4) plugging
1-4-1) prepare
1. scene needs to have energization, water flowing, logical steam, the condition of logical compressed air, intends the upper and lower end socket of maintenance of equipment
Have already turned on, clean out internal debris and hazardous medium, be ready for rain-proof measure, it is ensured that construction area is not caught in the rain；
2. to needing the equipment cleaning, drying of plugging：First graphite tube plate is cleaned up with steam, hot water or chemical
Endoporus；
3. leakage detection：Single pressure testing leakage detection is carried out to every graphite-pipe, carried out using dry compressed air, Control experiment pressure
The general 0.2MPa of power, mark is carried out to the graphite-pipe that discovery has seepage and is recorded；
4. binding agent sample：Binding agent is done according to code according to the weather condition and same day weather condition of plan commencement date
Sample, to determine the proportioning and an amount of preparation of binding agent during formal construction；
1-4-2) construct
1. polish graphite tube plate endoporus：With round file, wire brush polishing graphite tube plate endoporus hole wall, remove impurity thereon,
Dirty layer, untill exposing graphite true qualities, grinding depth, which is more than, needs blocking region, is rushed if it find that graphite tube plate endoporus hole wall has
Brush or corrode and deeper pit, it is necessary to first be repaired with clay, blocked up again after after abundant solidification, it is impossible to expand graphite tube plate endoporus
Greatly, to ensure pitch of holes i.e. adhesive thickness in plug and graphite tube plate；
2. dry：After the polishing of graphite tube plate endoporus hole wall is qualified, each hole is toasted with iodine-tungsten lamp, ensures it dry
It is dry；
3. binding agent is allocated：The technique evaluated during according to preparation is operated, and proportioning is used according to sample determination has been done
Gauged platform balance weighs resin, graphite powder, with counting cup meter curing agent, additive, weighing and metering will by two people with
On verification verification, then carry out dispensing.First load weighted a collection of resin is poured into agitator, then pours into graphite powder and solidification
Agent, is stirred with agitator, mixing time 10-15min, observation viscosity and well mixed situation, and appearance is poured on after being well mixed
In device, be sent to the scene for smearing binding agent, then do next group, binding agent will with do with, it is impossible to place the long time；Sometimes apply
Graphite-pipe and graphitization tube sheet will prepare the binding agent of different viscosities.4. bonding agent is smeared：It is firm for bonding, outside graphite plug 23
Binding agent 24 will be smeared inside portion and graphite-pipe plate hole, needs to be blown with the compressed air of clean dried before smearing bonding agent 24
Fall the dust in plug 23 and graphite-pipe plate hole, the front end of plug 23 and side are required for smearing bonding agent 24, and rotate uniform pressure
Real, thickness is no more than 1mm, after binding agent 24 has been smeared, and inside plug 23 paragraph by paragraph push-in graphite-pipe plate hole, application of force is equal
Even, rotation is pushed, must not be eccentric, when blocking tube sheet, prevents binding agent to be lost in (upper graphite tube plate and lower stone using Anti-lost block 25
The plugging construction schematic diagram of black tube sheet is as shown in Figure 3, Figure 4)；5. heat cure：After binding agent spontaneous curing, heat cure, heat are carried out
The method that solidification is toasted using iodine-tungsten lamp or air-heater, is controlled in proper temperature and time；
1-4-3) construction precautions：
1. tubesheet holes need to be repaired by cleaning and drying；
2. repaired hole inner circle feather plucking；
3. blow off dust and uniformly smear binding agent, be not allow for blind area；
4. graphite plug must be segmented and fill in, and form the circumferential weld of full clay；
5. after spontaneous curing 24 hours, 48 hours need to be heated to being fully cured；
1-4-4) other attentions：
1. whether have in plug-hole needed for going through and be washed the pit to be formed；
2. whether there is crackle between the Kong Yukong on graphite tube plate or be abraded and be connected；
3. determine wearing bush or put the depth or thickness for washing away plate, it is ensured that get lodged in more than wearing bush；
4. marker number is carried out, prevents that wrong stifled, leakage is stifled；
1-4-5) test leakage detection
1. pressure is determined：0.8 times of design pressure, or 0.3MPa, not more than 0.35MPa only test shell side pressure；
2. pressure-measuring method：Shell side mouth of pipe blank off first, full of normal temperature clean water, emptying air checks whether there is seepage,
Then pump up, boosting must be slow, rises within 2 minutes 0.1MPa, and seen whether seepage, such as ne-leakage pressurize half an hour pressure
It is qualified not to be reduced to；
3. pressurize leakage detection：More than pressure 30min is kept, seepage is checked whether there is；Rubbery stopper and corrosion resistant can also be used
Bolt, nut plugging are lost, the insertion depth of plug is determined according to leakage position.
(1-5) changes pipe
When graphite-pipe, which damages radical, reaches total radical more than 20%, pipe reparation need to be changed or new equipment is changed, program is as follows：
1-5-1) pressure testing inspection determines fistulae position, drains the water away, dry or drying, carries out mark；
The hole of the bad pipe position of two ends graphite tube plate 1-5-2) is expanded to 1 ㎜ bigger than graphite-pipe external diameter, graphite tube plate is got into
Behind bottom, fistulae is ejected with new graphite-pipe or taken out using specific purpose tool, the graphite-pipe plate hole of expansion wipes into hair side with sand paper,
Length will align with the bonding plane of new graphite-pipe, after being cohered with clay, be tensed with stay bolt, should symmetrically and evenly be tightened during fastening,
Prevent step, cold curing 24 hours, then carry out with drying oven heat cure 48 hours at 130 DEG C；It is this to change pipe operation and typically need
Equipment is transported back equipment manufacturing to carry out.
(2) replacing options of pad and O-ring
The abort situation and the order of severity occurred according to equipment, takes different repair methods, if pad and Ο types are irised out
Existing seepage, it may be possible to just can be with due to caused by nut loosening or thermal expansion, adjusting at any time；If pad and Ο types circle are
Sew seriously, then overhauled by following methods through aging or damage：
At (2-1) Ο type circle sealings, it is necessary to which per tour is tested record, such as find that leakage needs on-call maintenance, it is careful
Check at sealing surface whether burn into aging or damage, whether Ο types circle meet the requirements, and needs symmetrically to apply when installing sealing ring flange
Inspection leak test need to be suppressed after power, reparation at sealing；
(2-2) changes Ο type circles：Differential jack-up is taken out the Ο type circles to be changed, put by the symmetrical differential fixing nut that comes loose
Enter and (pass through between bolt and tube sheet) new Ο types circle to compress with differential again, should symmetrically and evenly be tightened nut.Ο used
Type circle makes of plantation rubber bar, and material selects fluorubber, PTFE or ethylene propylene diene rubber according to dielectric property.Ο type circles newly are changed,
Length is suitable, it is impossible to too loose, and joint place is using overlap joint, and the end of overlap two is whittled into less than the 30 ° gradients, neatly aligns and use glue
Water is cemented, and outside winds several layers of tetrafluoro raw material bands again.Ο types circle cut sides should be parallel to differential sealing surface during compression.
(2-3) changes sealing gasket：Upper cover must be dismantled by changing sealing gasket, check whether sealing surface damages, if any damage palpus
Repairing；Way of the way of sealing gasket with reference to Ο type circles.Sealing gasket makes of polytetrafluoro braided packing or rubber strip, material root
PTFE or ethylene propylene diene rubber, fluorubber are selected according to dielectric property.
(3) repair method of graphite tube plate
(3-1) source of damage：In transportation judder and when mechanical damage, fastening bolt it is unilateral firmly, more than making
Caused to damage with temperature and pressure, product material or construction quality is bad causes；
(3-2) damaged condition and position：General damage is to produce longitudinal crack, and graphite tube plate is damaged in this way, can also be influenceed
The cementing seam seepage of graphite-pipe, graphite-pipe needed for repair and replacement while repairing reason graphite tube plate；
(3-3) restorative procedure
Crackle both sides instrument widens crackle several millimeters on graphite tube plate, another processing one it is block-shaped similar with expansion seam and
The small 1mm of thickness or so impregnated graphite lath, the binding agent being stirred is applied to outside the inner face and small strip for expanding seam, then
Graphite lath is squeezed into expansion seam, it is ensured that the clay thickness in cementing seam two sides is uniform, then with the ratio graphite tube plate cut out
The slightly wider glass fabric of thickness circumferentially exerts oneself to curl after 2-3 circles when smearing cementing agent, is applied again outside glass fabric
Upper cementing agent, allows it to solidify, cold curing 24 hours, then is carried out with drying oven heat cure 48 hours at 130 DEG C, treating that cementing agent is complete
All solidstate rear can be used；
The cementing agent prescription and its raw material specification subordinate list of maintenance
| Material name | Specification | Formula |
| Phenolic resin | 2130# viscosity 1000-2000 seconds | 1kg |
| Graphite powder | Granularity 120-140 mesh | 0.6-0.8kg |
| Benzene sulfonyl chloride | Industrial goods, purity >=95% | 25-75 milliliters |
The consumption of benzene sulfonyl chloride：Depending on the change of temperature, the low consumption of temperature is big, and the high consumption of temperature is few.
(3-4) overhauls points for attention
(3-4-1) impregnated graphite tube sheet and dipping graphite tube are a kind of good fragile materials of decay resistance, are shaken
Move, beat, colliding with is easy to damage, therefore must be handled with care in dismounting, installation process, and being placed on flat cushion
On, it should be specifically noted that the protection to sealing surface；
When (3-4-2) is dismantled and is assembled upper cover, it is necessary to using four hangers thereon according to hoisting operations guidelines,
Prevent from overturning, collide with；
When in (3-4-3) dismounting, first it must be hung with suspender by, but suspender must not be too painstaking, and hoist cable is tightened, pine
Differential and Ο type circles are opened, upper cover is vertically sling or declines certain altitude (200-250mm) and then translates again, is put into safe
Place, protects sealing surface；Note：The necessary uniform force of four hoist cables, otherwise end socket, which can be overturn, collides with or is scratched by hoist cable close
Front cover.
(3-4-4) check sealing gasket and Ο types circle whether aging or damage, if weathered or damage, it is necessary to change same
The sealing gasket and Ο type circles of specification material of the same race are planted, checks whether sealing surface damages, must repairing if any damaging；
When (3-4-5) assembles upper cover, sealing surface must be cleaned out, and sealing gasket first is fixed on into upper cover or graphite-pipe
The sealing surface of plate has the region of sealing waterline, is inserted in the Ο type circles being ready for, then opposite according to dismounting upper cover handling
Upper cover handling in place, is directed at sealing surface, is hung upper cover with suspender by order, but suspender must not be too painstaking, and hoist cable stretches tight
Tight, four hoist cables must uniform force；
Stay bolt is passed through upper cover flange, differential, shell flange bolt hole by (3-4-6), now should be noted the pressure of differential
Tight nuts and washers will first be screwed on, and be adjusted to appropriate location；Four bolt positioning, adjustment can be first worn, in order to wear other spiral shells
Bolt.
(3-4-7) symmetrically and evenly tightens the nut of stay bolt outermost end, and differential clamp nut is then tightened again, tightens pressure
, it is necessary to which the filler in stuffing box is put well before blue clamp nut；
After the nut of (3-4-8) stay bolt is all tightened, check whether sealing pad position meets the requirements, bolt and nut stress
Whether uniform, qualified rear tube side water flowing, pressurization check at sealing whether there is seepage；Test pressure exceedes using pressure 0.05-
0.1MPa, it is not necessary to reach name plate rating.
When (3-4-9) drives again, when temperature is increased to 60-70 DEG C, inspection seals whether have seepage everywhere, if any oozing
Leakage needs emphasis to fasten blowby area bolt and nut, and other bolt and nuts also will be fastened suitably；
When (3-4-10) is dismantled and assembled low head, with reference to step (3-4-2)-(3-4-10).
The present invention using dedusting and heat exchange element of the graphite-pipe as boiler smoke, because its have good heat conductivility and
Low-affinity, particle dust can be separated under deadweight and effect of inertia from flue gas, and will not be sticked on graphite tube wall, be removed
Dirt is thorough；The condensation of the hazardous mediums such as SO2, NO2 in flue gas nebulizes or liquid is separated from flue gas, and shell is precipitated in heat exchanging segment
In vivo or it is precipitated in exhaust pass in water-film Separator, reduces the discharge of harmful substance.
Described above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, on the premise of principle of the present invention is not departed from, some improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of energy-saving graphite multitube smoke duster, it is characterised in that including housing, upper cover and low head, it is described on
End socket is connected to the top of housing, and the low head is connected to the lower section of housing, and the lower section of the low head, which is provided with, removes ash bin, institute
The lower end of dust cleaning case is stated provided with ash disposal mouthful, the housing is interior provided with graphite tube bank, and the joining place of the upper cover and housing is horizontal
There is upper graphite tube plate, the joining place of the low head and housing is horizontal lower graphite tube plate, the upper and lower side point of the graphite tube bank
It is not connected with upper graphite tube plate and lower graphite tube plate, and tube side connection upper cover and the inner chamber of low head of graphite tube bank,
The upper cover is provided with high-temperature flue gas entry, and the low head is exported provided with low-temperature flue gas, the tube side of the graphite tube bank
Interior flowing has flue gas；
Flowing has recirculated water in the shell side of the housing, and the bottom of the housing is provided with circulating water intake, the top of the housing
Provided with circulating water outlet；
The outside of the low-temperature flue gas outlet is connected with exhaust pass, and the lower section of the exhaust pass is unconcerned provided with the water for receiving condensation
Deduster.
2. energy-saving graphite multitube smoke duster according to claim 1, it is characterised in that the graphite tube bank is selected
Resin impregnating graphite-pipe.
3. energy-saving graphite multitube smoke duster according to claim 1, it is characterised in that the upper cover and housing
Between by tetrafluoro packing, O-ring and differential combination sealing, and connected by flange.
4. energy-saving graphite multitube smoke duster according to claim 1, it is characterised in that the low head and housing
Between be provided with polytetrafluoroethylene sealing gasket piece, be equipped with manhole on the upper cover and low head.
5. energy-saving graphite multitube smoke duster according to claim 1, it is characterised in that the circulating water outlet leads to
Overheat water pipe is connected with water tank, and a wherein water side for the water tank is connected by deaerating type of cycles with boiler, and another water side leads to
Cross hot water pipe with circulating water intake to be connected, be provided with water circulating pump on the hot water pipe at circulating water intake, the housing
Bottom, which is provided with to be connected on cold water pipe, the hot-water line, hot water pipe and cold water pipe on cooling water inlet, the water tank, is equipped with valve.
6. energy-saving graphite multitube smoke duster according to claim 5, it is characterised in that the water tank is provided with and put
Blank pipe.
7. energy-saving graphite multitube smoke duster according to claim 1, it is characterised in that the outside of the housing is equal
4 ear formula support bases are furnished with, the top of the housing is connected with water level alarm by water pipe.
8. a kind of method of work of energy-saving graphite multitube smoke duster, it is characterised in that including flue gas ash removal process and cigarette
Gas heat transfer process；
The flue gas ash removal process is：Granule dust in the flue gas in tube side restrained into graphite is in deadweight and inertial flow
Separate, deposit to except being discharged after ash bin by ash disposal mouthful from flue gas under effect；Flue-gas temperature is dropped to below acid dew point, in flue gas
SO2、NO2Nebulized Deng hazardous medium condensation or liquid is separated from flue gas, be precipitated in exhaust pass in water-film Separator.
9. the method for work of energy-saving graphite multitube smoke duster according to claim 8, it is characterised in that the cigarette
Gas heat transfer process liberated heat Q is calculated by following formula：
Q=G × C × (T1-T2) formula (1),
In formula, G is flue gas flow, m3/h；C is smoke density, kg/m3；T1For heat exchange before flue-gas temperature, DEG C；T2For cigarette after heat exchange
Temperature degree, DEG C；
The heat transfer area of heat exchanger is calculated by following formula：
In formula, Q is heat output, kJ；A is heat exchange area, m2；K is overall heat-transfer coefficient, kJ/m2·℃·h；Δ Tm is logarithmic mean
Temperature difference, DEG C；
Wherein, Δ Tm calculating according to two fluids flow direction be counter-current relationship depending on, during adverse current,
In formula, T1、T2The inlet and outlet temperature of --- -- flue gas, DEG C；t1、t2--- the inlet and outlet temperature of-recirculated water, DEG C.
10. a kind of repair method of energy-saving graphite multitube smoke duster, it is characterised in that comprise the following steps：
(1) graphite-pipe repair method
(1-1) graphite-pipe is damaged and cementing seam leakage cause includes：Damage, use because of serious vibration in transport installation process
Pressure increases impact and damaged suddenly caused by process impact of water hammer or temperature difference mutation, in the winter time in, operating process freezing due to ponding
It is bad, more than temperature in use cause damage, quality of item it is bad caused by；
(1-2) graphite-pipe damages the position of phenomenon and breakage：Except by strong lateral load impact shock cause to lose and due to
Longitudinal crack and the hydrophthalmia infiltration of the not good generation of graphite-pipe quality, most of damage all occurs cementing with graphite tube plate in graphite-pipe
Position on, due to it is cementing seam split, cause medium osmosis inside and outside graphite-pipe, also have other positions fracture；
(1-3) restorative procedure：1. the graphite-pipe number as damaged is few, using the graphite plug being consistent with graphite tube plate aperture, will damage
The graphite-pipe plate hole at graphite-pipe two ends blocked with cementing method；2. the graphite-pipe number as damaged is more, all blocks influence and sets
Standby heat exchange area, the graphite of damage can be taken out, change new graphite-pipe；
(1-4) plugging
1-4-1) prepare
1. scene needs to have energization, water flowing, logical steam, the condition of logical compressed air, has intended the upper and lower end socket of maintenance of equipment
Open, clean out internal debris and hazardous medium, be ready for rain-proof measure, it is ensured that construction area is not caught in the rain；
2. to needing the equipment cleaning, drying of plugging：First graphite tube plate endoporus is cleaned up with steam, hot water or chemical；
3. leakage detection：Single pressure testing leakage detection is carried out to every graphite-pipe, carried out using dry compressed air, Control experiment pressure one
As 0.2MPa, to discovery have seepage graphite-pipe carry out mark and record；
4. binding agent sample：Binding agent examination is done according to code according to the weather condition and same day weather condition of plan commencement date
Sample, to determine the proportioning and an amount of preparation of binding agent during formal construction；
1-4-2) construct
1. polish graphite tube plate endoporus：With round file, wire brush polishing graphite tube plate endoporus hole wall, impurity, dirty layer thereon is removed,
Untill exposing graphite true qualities, grinding depth, which is more than, needs blocking region, if it find that graphite tube plate endoporus hole wall is washed, corruption
Lose deeper pit, it is necessary to first be repaired with clay, blocked up again after after abundant solidification, it is impossible to expand graphite tube plate endoporus, to protect
It is adhesive thickness that plug, which is demonstrate,proved, with pitch of holes in graphite tube plate；
2. dry：After the polishing of graphite tube plate endoporus hole wall is qualified, each hole is toasted with iodine-tungsten lamp, it is ensured drying；
3. binding agent is allocated：The technique evaluated during according to preparation is operated, and proportioning is according to sample determination has been done, with check
The platform balance crossed weighs resin, graphite powder, and with counting cup meter curing agent, additive, load weighted a collection of resin is first poured into stirring
In bucket, then graphite powder and curing agent are poured into, be stirred with agitator, mixing time 10-15min, observation viscosity and mixing are equal
Even situation, it is well mixed after be poured in container, be sent to the scene for smearing binding agent, then do next group, binding agent will with do with,
It can not place the long time；4. bonding agent is smeared：It is firm for bonding, it will be smeared outside graphite plug and inside graphite-pipe plate hole
Binding agent, needs to blow the dust in plug and graphite-pipe plate hole off with the compressed air of clean dried before smearing bonding agent, blocks up
Head front end and side are required for smearing bonding agent, and rotate uniform compaction, and thickness is no more than 1mm, after binding agent has been smeared,
Plug is pushed into inside graphite-pipe plate hole paragraph by paragraph, application of force is uniform, rotation is pushed, must not be eccentric, when blocking tube sheet, utilize anti-stream
Losing block prevents binding agent to be lost in；5. heat cure：After binding agent spontaneous curing, heat cure is carried out, heat cure uses iodine-tungsten lamp or heat
The method of blower fan baking, is controlled in proper temperature and time；
1-4-3) construction precautions：
1. tubesheet holes need to be repaired by cleaning and drying；
2. repaired hole inner circle feather plucking；
3. blow off dust and uniformly smear binding agent, be not allow for blind area；
4. graphite plug must be segmented and fill in, and form the circumferential weld of full clay；
5. after spontaneous curing 24 hours, 48 hours need to be heated to being fully cured；
1-4-4) other attentions：
1. whether have in plug-hole needed for going through and be washed the pit to be formed；
2. whether there is crackle between the Kong Yukong on graphite tube plate or be abraded and be connected；
3. determine wearing bush or put the depth or thickness for washing away plate, it is ensured that get lodged in more than wearing bush；
4. marker number is carried out, prevents that wrong stifled, leakage is stifled；
1-4-5) test leakage detection
1. pressure is determined：0.8 times of design pressure, or 0.3MPa, not more than 0.35MPa only test shell side pressure；
2. pressure-measuring method：Shell side mouth of pipe blank off first, full of normal temperature clean water, emptying air checks whether there is seepage, then
Pump up, boosting must be slow, rises within 2 minutes 0.1MPa, and has seen whether seepage, and such as ne-leakage pressurize half an hour pressure does not drop
To be qualified；
3. pressurize leakage detection：More than pressure 30min is kept, seepage is checked whether there is；
(1-5) changes pipe
When graphite-pipe, which damages radical, reaches total radical more than 20%, pipe reparation need to be changed or new equipment is changed, program is as follows：
1-5-1) pressure testing inspection determines fistulae position, drains the water away, dry or drying, carries out mark；
The hole of the bad pipe position of two ends graphite tube plate 1-5-2) is expanded to 1 ㎜ bigger than graphite-pipe external diameter, graphite tube plate bottom is got into
Afterwards, fistulae is ejected with new graphite-pipe or taken out using specific purpose tool, the graphite-pipe plate hole of expansion wipes into hair side, length with sand paper
To align, after being cohered with clay, be tensed with stay bolt with the bonding plane of new graphite-pipe, should symmetrically and evenly tighten, prevent during fastening
Step, cold curing 24 hours, then carry out with drying oven heat cure 48 hours at 130 DEG C；
(2) replacing options of pad and O-ring
The abort situation and the order of severity occurred according to equipment, takes different repair methods, if pad and Ο types are irised out and now oozed
Leakage, it may be possible to just can be with due to caused by nut loosening or thermal expansion, adjusting at any time；If pad and Ο type circles are old
Change or damage and sew seriously, then overhauled by following methods：
At (2-1) Ο type circle sealings, it is necessary to which per tour is tested record, such as find that leakage needs on-call maintenance, go through
At sealing surface whether burn into aging or damage, whether Ο types circle met the requirements, and symmetrical force is needed when installing sealing ring flange,
Inspection leak test need to be suppressed after reparation at sealing；
(2-2) changes Ο type circles：Differential jack-up is taken out the Ο type circles to be changed by the symmetrical differential fixing nut that comes loose, and is inserted new
Ο types circle is compressed with differential again, and should symmetrically and evenly be tightened nut；
(2-3) changes sealing gasket：Upper cover must be dismantled by changing sealing gasket, check whether sealing surface damages, must repairing if any damaging；
(3) repair method of graphite tube plate
(3-1) source of damage：In transportation judder and when mechanical damage, fastening bolt it is unilateral firmly, more than using temperature
Degree and pressure cause to damage, product material or construction quality is bad causes；
(3-2) damaged condition and position：General damage is to produce longitudinal crack, and graphite tube plate is damaged in this way, can also influence graphite
Manage cementing seam seepage, graphite-pipe needed for repair and replacement while repairing reason graphite tube plate；
(3-3) restorative procedure
Crackle both sides instrument widens crackle several millimeters on graphite tube plate, and another processing one is block-shaped similar with expansion seam and thickness
Small 1mm or so impregnated graphite lath, the binding agent being stirred is applied to outside the inner face and small strip for expanding seam, then by stone
Black lath is squeezed into expansion seam, it is ensured that the clay thickness in cementing seam two sides is uniform, then with the thickness of the ratio graphite tube plate cut out
Slightly wider glass fabric circumferentially exerts oneself to curl after 2-3 circles when smearing cementing agent, applies gluing again outside glass fabric
Agent is tied, allows it to solidify, cold curing 24 hours, then carried out with drying oven heat cure 48 hours at 130 DEG C, treating that cementing agent is completely solid
Change rear can be used；
(3-4) overhauls points for attention
(3-4-1) impregnated graphite tube sheet and dipping graphite tube are a kind of good fragile materials of decay resistance, are given a shock, strike
Beat, colliding with is easy to damage, therefore must be handled with care in dismounting, installation process, and be placed on flat cushion, Ying Te
The protection to sealing surface is not noted；
When (3-4-2) is dismantled and is assembled upper cover, it is necessary to using four hangers thereon according to hoisting operations guidelines, prevent
Overturn, collide with；
When (3-4-3) dismantles upper cover, first upper cover must be hung with suspender, but suspender must not be too painstaking, and hoist cable is tightened i.e.
Can, differential and Ο type circles are unclamped, upper cover is vertically sling or declines certain altitude and then translates again, safe place is put into,
Protect sealing surface；
(3-4-4) check sealing gasket and Ο types circle whether aging or damage, if weathered or damage, it is necessary to change rule of the same race
The sealing gasket and Ο type circles of lattice material of the same race, check whether sealing surface damages, must repairing if any damaging；
When (3-4-5) assembles upper cover, sealing surface must be cleaned out, and sealing gasket first is fixed on into upper cover or graphite tube plate
Sealing surface has the region of sealing waterline, is inserted in the Ο type circles being ready for, then according to the opposite order of dismounting upper cover handling
By upper cover handling in place, sealing surface is directed at, upper cover is hung with suspender, but suspender must not be too painstaking, and hoist cable is tightened i.e.
Can, four hoist cables must uniform force；
Stay bolt is passed through upper cover flange, differential, shell flange bolt hole by (3-4-6), now should be noted the compression spiral shell of differential
Female and packing ring will first be screwed on, and be adjusted to appropriate location；
(3-4-7) symmetrically and evenly tightens the nut of stay bolt outermost end, and differential clamp nut is then tightened again, tightens differential pressure
, it is necessary to which the filler in stuffing box is put well before tight nut；
After the nut of (3-4-8) stay bolt is all tightened, check sealing pad position whether meet the requirements, bolt and nut stress whether
Uniformly, qualified rear tube side water flowing, pressurization, check at sealing whether there is seepage；
When (3-4-9) drives again, when temperature is increased to 60-70 DEG C, inspection seals whether have seepage everywhere, is needed if any seepage
Emphasis fastens blowby area bolt and nut, and other bolt and nuts also will be fastened suitably；
When (3-4-10) is dismantled and assembled low head, with reference to step (3-4-2)-(3-4-10).
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| CN107478086A (en) * | 2017-09-05 | 2017-12-15 | 南通山剑石墨设备有限公司 | A kind of method for repairing and mending of tube plate of graphite heat exchanger |
| CN109869901A (en) * | 2017-12-02 | 2019-06-11 | 哈尔滨工大金涛科技股份有限公司 | Natural gas straight hot type water heater |
| CN110555288A (en) * | 2019-09-25 | 2019-12-10 | 中国石油大学(华东) | Method and system for determining axial load of graphite packing ring for static coupling seal |
| CN110645586A (en) * | 2019-10-29 | 2020-01-03 | 江苏省特种设备安全监督检验研究院 | Power station boiler whitening device and working method thereof |
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| CN107478086A (en) * | 2017-09-05 | 2017-12-15 | 南通山剑石墨设备有限公司 | A kind of method for repairing and mending of tube plate of graphite heat exchanger |
| CN109869901A (en) * | 2017-12-02 | 2019-06-11 | 哈尔滨工大金涛科技股份有限公司 | Natural gas straight hot type water heater |
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| CN110555288A (en) * | 2019-09-25 | 2019-12-10 | 中国石油大学(华东) | Method and system for determining axial load of graphite packing ring for static coupling seal |
| CN110555288B (en) * | 2019-09-25 | 2023-04-18 | 中国石油大学(华东) | Method and system for determining axial load of graphite packing ring for static coupling seal |
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| CN115138539A (en) * | 2022-06-28 | 2022-10-04 | 贵州兰鑫石墨机电设备制造有限公司 | Glue injection repairing method and glue injection device for abnormal sound of distance tube of graphite tube heat exchanger |
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Application publication date: 20170815 |