CN104154807B - A kind of restorative procedure of piece of block hole type graphite heat transfer block - Google Patents
A kind of restorative procedure of piece of block hole type graphite heat transfer block Download PDFInfo
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- CN104154807B CN104154807B CN201410406644.0A CN201410406644A CN104154807B CN 104154807 B CN104154807 B CN 104154807B CN 201410406644 A CN201410406644 A CN 201410406644A CN 104154807 B CN104154807 B CN 104154807B
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Abstract
The invention discloses the restorative procedure of a kind of piece of block hole type graphite heat transfer block, this restorative procedure comprises the following steps: boil in the clear water after block block hole type graphite heat transfer block is put into heating, removes the residual acid in graphite heat exchange block；Grind off the aged resin layer of block block hole type graphite heat transfer block side and upper and lower end face with angle grinding machine, clean material hole and the steam hole of graphite heat exchange block with threaded screw rod after, rinse with clear water；Block block hole type graphite heat transfer block is put in drying oven and dry, then take out natural cooling；Block block hole type graphite heat transfer block is put into the impregnation process carrying out phenolic resin in dipping still；After dipping block block hole type graphite heat transfer block after good is dried, put into heat treatment still and carry out heat treatment；Carry out suppressing inspection by the block block hole type graphite heat transfer block after heat treatment.Owing to using clear water to boil, do not have the generation of internal stress in graphite heat exchange block, extend the service life of graphite heat exchange block；After removing aging resin bed, again during impregnated phenolic resin, will not additionally increase the thickness of resin bed.
Description
Technical field
The present invention relates to the restorative procedure of a kind of piece of block hole type graphite heat transfer block, belong to graphite heat exchange block
Recovery technique field.
Background technology
Existing piece of hole-type graphite heat exchanger, after use after a while, can produce graphite block
The aging corrosion of resin bed of hole dipping, the material hole in graphite block hole and steam hole (or water hole) phase
Penetrating generation material from leakage mutually makes heat exchanger not to be continuing with, and needs heat exchanging block to solve
Body repair process.The restorative procedure of the graphite heat exchange block of existing piece of hole-type graphite heat exchanger is such as
Under: 1, the clear water of graphite heat exchange block rinses；2, with the aqueous alkali of 7%-12% to graphite heat exchange block
Carry out soda boiling；3, again graphite heat exchange block is carried out clear water flushing；4, the baking of graphite heat exchange block
Dry；5, the dipping of graphite heat exchange block；6, the heat treatment of graphite heat exchange block；7, graphite heat exchange
The monolithic of block suppresses inspection.The restorative procedure of above graphite heat exchange block there is the problem that 1,
Owing to remaining phenolic hydroxyl group in phenolic resin during soda boiling, it is a kind of weakly acidic group,
The phenol sodium of solubility with alkali generation chemical reaction, can be generated, so phenolic resin not alkali resistance is situated between
Matter, owing to chemical reaction is exothermic reaction, alkali liquor is uneven with the exposure of graphite heat exchange block
, alkali liquor also differs, due to chemical reaction with the chemical reaction severe degree of phenolic hydroxyl group
Inhomogeneities, the hot internal stress produced in former impregnated graphite block will be made to differ, lead
Causing the cracking damage or the most fragile of graphite block, the service life making graphite heat exchange block is big
Big reduction.Here it is graphite heat exchange block reason of damage easy to crack when keeping in repair soda boiling；2、
Existing graphite heat exchange block method for maintaining uses clear water to rinse can remove graphite heat exchange block surface
Dirt and partial impurities, but the aging phenolic resin on former graphite block can not be removed, in dimension
Repairing in dipping process, new phenolic resin is low with old phenolic resin bond strength, makes graphite change
Hot block in use resin bed is easy to fall off, and service life is low；Resin layer thickness is big, heat exchange
Efficiency reduces, and energy resource consumption is big, does not reaches energy-saving and cost-reducing purpose.In sum, existing
The method for maintaining in block hole-type graphite heat exchanger graphite block hole makes service life in graphite block hole low, energy
Source consumes big, causes huge economic loss to Chemical Manufacture enterprise.
Summary of the invention
It is an object of the invention to: the restorative procedure of a kind of piece of block hole type graphite heat transfer block is provided, solve
The problem that certainly existing restorative procedure exists so that the block block hole type graphite heat transfer block after reparation uses
Life-span is long, reaches energy-saving and cost-reducing purpose.
Technical scheme: the restorative procedure of a kind of piece of block hole type graphite heat transfer block, this reparation
Method comprises the following steps:
A, block block hole type graphite heat transfer block is put into heating after clear water in boil, remove graphite change
Residual acid in hot block；
B, grind off the aging tree of block block hole type graphite heat transfer block side and upper and lower end face with angle grinding machine
Lipid layer, clean material hole and the steam hole of graphite heat exchange block with threaded screw rod after, rinses with clear water；
C, block block hole type graphite heat transfer block is put in drying oven dry, then take out natural cooling；
D, block block hole type graphite heat transfer block is put in dipping still and carry out the impregnation process of phenolic resin；
E, the block block hole type graphite heat transfer block after good for dipping is dried after, put into heat treatment still and enter
Row heat treatment；
F, carry out suppressing inspection by the block block hole type graphite heat transfer block after heat treatment.
The restorative procedure of above-mentioned block block hole type graphite heat transfer block, before described step A, first with clear
Water rinses block block hole type graphite heat transfer block.
The restorative procedure of above-mentioned block block hole type graphite heat transfer block, after described step C, first by pressure
The contracting air purging side of block block hole type graphite heat transfer block, upper and lower end face, material hole and steam hole
After, then carry out step D.
The restorative procedure of above-mentioned block block hole type graphite heat transfer block, in described step A, by block cellular type
Graphite heat exchange block is put in clear water, and clear water is heated to 70-100 DEG C, after the heating
Water boils 2-5 hour.
The restorative procedure of above-mentioned block block hole type graphite heat transfer block, in described step C, by block cellular type
Graphite heat exchange block is put in drying oven, and temperature to be dried stops heating up and protecting after being 70-100 DEG C
Temperature 0.5 hour.
The restorative procedure of above-mentioned block block hole type graphite heat transfer block, repeat step D impregnation process and
The heat treatment of step E 2-4 time, then carry out step F.
The restorative procedure of above-mentioned block block hole type graphite heat transfer block, in described step F, by block cellular type
Graphite heat exchange block carries out the water pressure test, and pressure is 0.4-1.0MPa, and test period is more than 30 points
Clock.
Beneficial effects of the present invention: the block block hole type graphite heat transfer block that the present invention repairs is clear owing to using
Decocting in water, does not has alkali to react with the phenolic hydroxy group of the phenolic resin in graphite heat exchange block, stone
Do not have the generation of internal stress in ink heat transfer block, greatly extend the use longevity of graphite heat exchange block
Life；Use cornea machine and threaded screw rod eliminates on graphite heat exchange block end face and material hole and steaming
After resin bed aging in steam vent, more again impregnated phenolic resin time will not additionally increase resin bed
Thickness, graphite heat exchange block heat transfer effect in use is good, and service life is long, has reached joint
The purpose that can lower consumption.
Accompanying drawing explanation
Accompanying drawing 1 is the main TV structure schematic diagram of the block block hole type graphite heat transfer block of the present invention；
Accompanying drawing 2 is the plan structure schematic diagram of the block block hole type graphite heat transfer block of the present invention；
Reference: 1-block block hole type graphite heat transfer block, 2-material hole, 3-steam hole.
Detailed description of the invention
Embodiments of the invention 1: the restorative procedure of a kind of piece of block hole type graphite heat transfer block, this reparation
Method comprises the following steps:
A, clear water boil: first rinse out the residual acid on block block hole type graphite heat transfer block 1 surface with clear water
And dirt, then the container needing the block block hole type graphite heat transfer block 1 repaired to be immersed in clear water
Interior heating, heating-up temperature is 70-100 DEG C, after water temperature reaches 70-100 DEG C, boils 2-5 hour,
Due to the Brownian movement of hydrone with the acid molecule remained in block block hole type graphite heat transfer block 1, residual
Stay the acid in block block hole type graphite heat transfer block 1 will be exuded in water, reach to remove block cellular type stone
The purpose of residual acid in ink heat transfer block 1；
B, removing surface resin layer: polish off block cellular type graphite with the angle grinding machine of band polished silicon wafer and change
Hot block 1 side and the aged resin layer of upper and lower end face, be careful not to damage block cellular type graphite and change
Hot block 1 body and sealing surface；With the threaded screw rod material hole 2 to block block hole type graphite heat transfer block 1
Clear up one by one with steam hole 3, dispose the aging of material hole 2 and steam hole 3 inner surface
Resin bed, and rinse with clear water；
C, cleaning and the block block hole type graphite heat transfer block 1 that rinsed are put into drying in drying oven fall
Moisture between heat transfer block surface and heat transfer block interior molecules, in order to phenolic aldehyde tree in finishing operations
The carrying out of fat, temperature to be dried stops heating up and being incubated 0.5 hour, so after being 70-100 DEG C
Rear taking-up naturally cools to room temperature；
D, block block hole type graphite heat transfer block 1 is put in dipping still and carry out at the dipping of phenolic resin
Reason, during process, the water content mass percent of phenolic resin self is less than 12%, and phenolic resin
Middle free phenol content mass percent controls below 7%, the content of free aldehyde in phenolic resin
Mass percent controls below 2%, and dip time is 10-15 hour；
E, the block block hole type graphite heat transfer block 1 after good for dipping is dried after, put into heat treatment still
Carrying out heat treatment, heat treatment time is 10-15 hour, and heat treatment temperature is 160-180 DEG C,
Make phenolic resin be become the solid netted molecule of intersection from linear molecule, arrive phenolic resin curing
Purpose, strengthen the permeability resistance of graphite heat exchange block and intensity, improve the service life of graphite block；
F, finally the block block hole type graphite heat transfer block 1 after heat treatment is carried out suppressing inspection, hydraulic pressure
Test pressure is 0.4-1.0MPa, and pressurize not pressure release in more than 30 minutes is qualified.
After step c, first with compressed air purging block block hole type graphite heat transfer block 1 side,
Upper and lower end face, material hole 2 and steam hole 3, in order to remove and remain in block cellular type graphite heat exchange
Dust on block, carries out step D the most again.
After repeating heat treatment 2-4 time of the impregnation process of step D and step E, then carry out step
F, in order to make up the 1st time dipping and the defect of heat treatment.
Embodiments of the invention 2: the restorative procedure of a kind of piece of block hole type graphite heat transfer block, this reparation
Method comprises the following steps:
A, clear water boil: first rinse out the residual acid on block block hole type graphite heat transfer block 1 surface with clear water
And dirt, then the container needing the block block hole type graphite heat transfer block 1 repaired to be immersed in clear water
Interior heating, heating-up temperature is 70 DEG C, after water temperature reaches 70 DEG C, boils 2 hours, due to moisture
Son and the Brownian movement of the acid molecule remained in block block hole type graphite heat transfer block 1, remain in block hole
Acid in formula graphite heat exchange block 1 will be exuded in water, reaches to remove block block hole type graphite heat transfer block
The purpose of residual acid in 1；
B, removing surface resin layer: polish off block cellular type graphite with the angle grinding machine of band polished silicon wafer and change
Hot block 1 side and the aged resin layer of upper and lower end face, be careful not to damage block cellular type graphite and change
Hot block 1 body and sealing surface；With the threaded screw rod material hole 2 to block block hole type graphite heat transfer block 1
Clear up one by one with steam hole 3, dispose the aging of material hole 2 and steam hole 3 inner surface
Resin bed, and rinse with clear water；
C, cleaning and the block block hole type graphite heat transfer block 1 that rinsed are put into drying in drying oven fall
Moisture between heat transfer block surface and heat transfer block interior molecules, in order to phenolic aldehyde tree in finishing operations
The carrying out of fat, temperature to be dried stops heating up and being incubated 0.5 hour after being 70 DEG C, then takes
Go out to naturally cool to room temperature；
D, block block hole type graphite heat transfer block 1 is put in dipping still and carry out at the dipping of phenolic resin
Reason, during process, the water content mass percent of phenolic resin self is less than 12%, and phenolic resin
Middle free phenol content mass percent controls below 7%, the content of free aldehyde in phenolic resin
Mass percent controls below 2%, and dip time is 10 hours；
E, the block block hole type graphite heat transfer block 1 after good for dipping is dried after, put into heat treatment still
Carrying out heat treatment, heat treatment time is 10 hours, and heat treatment temperature is 160 DEG C, makes phenolic aldehyde
Resin is become the solid netted molecule of intersection from linear molecule, arrives the mesh of phenolic resin curing
, strengthen permeability resistance and the intensity of graphite heat exchange block, improve the service life of graphite block；
F, finally the block block hole type graphite heat transfer block 1 after heat treatment is carried out suppressing inspection, hydraulic pressure
Test pressure is 0.4-1.0MPa, and pressurize not pressure release in more than 30 minutes is qualified.
After step c, first with compressed air purging block block hole type graphite heat transfer block 1 side,
Upper and lower end face, material hole 2 and steam hole 3, in order to remove and remain in block cellular type graphite heat exchange
Dust on block, carries out step D the most again.
After repeating the heat treatment 2 times of the impregnation process of step D and step E, then carry out step F,
To make up the 1st time dipping and the defect of heat treatment.
The sour residual quantity of the hole block formula graphite heat exchange block 1 after this embodiment processes is less, repaiies
The heat transfer block that the intensity of the hole block formula graphite heat exchange block 1 after Fu is made than common material
Can improve about 3 times, its temperature tolerance and anticorrosive property improve about 15%.
Embodiments of the invention 3: the restorative procedure of a kind of piece of block hole type graphite heat transfer block, this reparation
Method comprises the following steps:
A, clear water boil: first rinse out the residual acid on block block hole type graphite heat transfer block 1 surface with clear water
And dirt, then the container needing the block block hole type graphite heat transfer block 1 repaired to be immersed in clear water
Interior heating, heating-up temperature is 85 DEG C, after water temperature reaches 85 DEG C, boils 3.5 hours, due to water
Molecule and the Brownian movement of the acid molecule remained in block block hole type graphite heat transfer block 1, remain in block
Acid in block hole type graphite heat transfer block 1 will be exuded in water, reaches to remove block cellular type graphite heat exchange
The purpose of residual acid in block 1；
B, removing surface resin layer: polish off block cellular type graphite with the angle grinding machine of band polished silicon wafer and change
Hot block 1 side and the aged resin layer of upper and lower end face, be careful not to damage block cellular type graphite and change
Hot block 1 body and sealing surface；With the threaded screw rod material hole 2 to block block hole type graphite heat transfer block 1
Clear up one by one with steam hole 3, dispose the aging of material hole 2 and steam hole 3 inner surface
Resin bed, and rinse with clear water；
C, cleaning and the block block hole type graphite heat transfer block 1 that rinsed are put into drying in drying oven fall
Moisture thereon, temperature to be dried stops heating up and being incubated 0.5 hour, then after being 85 DEG C
Taking-up naturally cools to room temperature；
D, block block hole type graphite heat transfer block 1 is put in dipping still and carry out at the dipping of phenolic resin
Reason, during process, the water content mass percent of phenolic resin self is less than 12%, and phenolic resin
Middle free phenol content mass percent controls below 7%, the content of free aldehyde in phenolic resin
Mass percent controls below 2%, and dip time is 13 hours；
E, the block block hole type graphite heat transfer block 1 after good for dipping is dried after, put into heat treatment still
Carrying out heat treatment, heat treatment time is 13 hours, and heat treatment temperature is 170 DEG C, makes phenolic aldehyde
Resin is become the solid netted molecule of intersection from linear molecule, arrives the mesh of phenolic resin curing
, strengthen permeability resistance and the intensity of graphite heat exchange block, improve the service life of graphite block；
F, finally the block block hole type graphite heat transfer block 1 after heat treatment is carried out suppressing inspection, hydraulic pressure
Test pressure is 0.4-1.0MPa, and pressurize not pressure release in more than 30 minutes is qualified.
After step c, first with compressed air purging block block hole type graphite heat transfer block 1 side,
Upper and lower end face, material hole 2 and steam hole 3, in order to remove and remain in block cellular type graphite heat exchange
Dust on block, carries out step D the most again.
After repeating the heat treatment 3 times of the impregnation process of step D and step E, then carry out step F,
To make up the 1st time dipping and the defect of heat treatment.
The sour residual quantity of the hole block formula graphite heat exchange block 1 after this embodiment processes is less, repaiies
The heat transfer block that the intensity of the hole block formula graphite heat exchange block 1 after Fu is made than common material
Can improve about 5 times, its temperature tolerance and anticorrosive property improve about 25%.
Embodiments of the invention 4: the restorative procedure of a kind of piece of block hole type graphite heat transfer block, this reparation
Method comprises the following steps:
A, clear water boil: first rinse out the residual acid on block block hole type graphite heat transfer block 1 surface with clear water
And dirt, then the container needing the block block hole type graphite heat transfer block 1 repaired to be immersed in clear water
Interior heating, heating-up temperature is 100 DEG C, after water temperature reaches 100 DEG C, boils 5 hours, due to water
Molecule and the Brownian movement of the acid molecule remained in block block hole type graphite heat transfer block 1, remain in block
Acid in block hole type graphite heat transfer block 1 will be exuded in water, reaches to remove block cellular type graphite heat exchange
The purpose of residual acid in block 1；
B, removing surface resin layer: polish off block cellular type graphite with the angle grinding machine of band polished silicon wafer and change
Hot block 1 side and the aged resin layer of upper and lower end face, be careful not to damage block cellular type graphite and change
Hot block 1 body and sealing surface；With the threaded screw rod material hole 2 to block block hole type graphite heat transfer block 1
Clear up one by one with steam hole 3, dispose the aging of material hole 2 and steam hole 3 inner surface
Resin bed, and rinse with clear water；
C, cleaning and the block block hole type graphite heat transfer block 1 that rinsed are put into drying in drying oven fall
Moisture thereon, temperature to be dried stops heating up and being incubated 0.5 hour, then after being 100 DEG C
Taking-up naturally cools to room temperature；
D, block block hole type graphite heat transfer block 1 is put in dipping still and carry out at the dipping of phenolic resin
Reason, during process, the water content mass percent of phenolic resin self is less than 12%, and phenolic resin
Middle free phenol content mass percent controls below 7%, the content of free aldehyde in phenolic resin
Mass percent controls below 2%, and dip time is 15 hours；
E, the block block hole type graphite heat transfer block 1 after good for dipping is dried after, put into heat treatment still
Carrying out heat treatment, heat treatment time is 15 hours, and heat treatment temperature is 180 DEG C, makes phenolic aldehyde
Resin is become the solid netted molecule of intersection from linear molecule, arrives the mesh of phenolic resin curing
, strengthen permeability resistance and the intensity of graphite heat exchange block, improve the service life of graphite block；
F, finally the block block hole type graphite heat transfer block 1 after heat treatment is carried out suppressing inspection, hydraulic pressure
Test pressure is 0.4-1.0MPa, and pressurize not pressure release in more than 30 minutes is qualified.
After step c, first with compressed air purging block block hole type graphite heat transfer block 1 side,
Upper and lower end face, material hole 2 and steam hole 3, in order to remove and remain in block cellular type graphite heat exchange
Dust on block, carries out step D the most again.
After repeating the heat treatment 4 times of the impregnation process of step D and step E, then carry out step F,
To make up the 1st time dipping and the defect of heat treatment.
The sour residual quantity of the hole block formula graphite heat exchange block 1 after this embodiment processes is considerably less,
The heat exchange that the intensity of the hole block formula graphite heat exchange block 1 after reparation is made than common material
Block can improve about 8 times, and its temperature tolerance and anticorrosive property improve about 35%.
Claims (5)
1. the restorative procedure of a block block hole type graphite heat transfer block, it is characterised in that: this restorative procedure comprises the following steps:
A, block block hole type graphite heat transfer block (1) is put in clear water, and clear water is heated to 70-100 DEG C, water after the heating boils 2-5 hour, remove the residual acid in graphite heat exchange block (1)；
B, grind off the aged resin layer of block block hole type graphite heat transfer block (1) side and upper and lower end face with angle grinding machine, clean material hole (2) and the steam hole (3) of graphite heat exchange block (1) with threaded screw rod after, rinse with clear water；
C, putting in drying oven by block block hole type graphite heat transfer block (1), temperature to be dried stops heating up and being incubated 0.5 hour after being 70-100 DEG C, then takes out natural cooling；
D, block block hole type graphite heat transfer block (1) is put in dipping still and carry out the impregnation process of phenolic resin；
E, the block block hole type graphite heat transfer block (1) after good for dipping is dried after, put into heat treatment still and carry out heat treatment；
F, carry out suppressing inspection by the block block hole type graphite heat transfer block (1) after heat treatment.
The restorative procedure of the most according to claim 1 piece of block hole type graphite heat transfer block, it is characterised in that: before described step A, first rinse block block hole type graphite heat transfer block (1) with clear water.
The restorative procedure of the most according to claim 1 piece of block hole type graphite heat transfer block, it is characterized in that: after described step C, first after side, upper and lower end face, material hole (2) and the steam hole (3) by compressed air purging block block hole type graphite heat transfer block (1), then carry out step D.
The restorative procedure of the most according to claim 1 piece of block hole type graphite heat transfer block, it is characterised in that: repeat heat treatment 2-4 time of the impregnation process of step D and step E, then carry out step F.
The restorative procedure of the most according to claim 1 piece of block hole type graphite heat transfer block, it is characterised in that: in described step F, block block hole type graphite heat transfer block (1) being carried out the water pressure test, pressure is 0.4-1.0MPa, and test period is more than 30 minutes.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410406644.0A CN104154807B (en) | 2014-08-18 | 2014-08-18 | A kind of restorative procedure of piece of block hole type graphite heat transfer block |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410406644.0A CN104154807B (en) | 2014-08-18 | 2014-08-18 | A kind of restorative procedure of piece of block hole type graphite heat transfer block |
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| CN104154807B true CN104154807B (en) | 2016-08-17 |
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| CN110319730B (en) * | 2019-07-11 | 2021-04-27 | 南通晨光石墨设备有限公司 | Production process of graphite corrugated heat exchange plate |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2804775Y (en) * | 2005-07-11 | 2006-08-09 | 山东赫达股份有限公司 | Graphite heat exchanger |
| CN201885606U (en) * | 2010-09-28 | 2011-06-29 | 山西太钢不锈钢股份有限公司 | Cooler for acid purification |
| CN102455147A (en) * | 2010-10-25 | 2012-05-16 | 南通京通石墨设备有限公司 | Micro-leakage repairing device of graphite heat exchange block |
| CN202304495U (en) * | 2011-10-19 | 2012-07-04 | 焦作东方海纳科技发展有限公司 | Round block type graphite heat exchanger resistant to high pressure and easy to clean |
-
2014
- 2014-08-18 CN CN201410406644.0A patent/CN104154807B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2804775Y (en) * | 2005-07-11 | 2006-08-09 | 山东赫达股份有限公司 | Graphite heat exchanger |
| CN201885606U (en) * | 2010-09-28 | 2011-06-29 | 山西太钢不锈钢股份有限公司 | Cooler for acid purification |
| CN102455147A (en) * | 2010-10-25 | 2012-05-16 | 南通京通石墨设备有限公司 | Micro-leakage repairing device of graphite heat exchange block |
| CN202304495U (en) * | 2011-10-19 | 2012-07-04 | 焦作东方海纳科技发展有限公司 | Round block type graphite heat exchanger resistant to high pressure and easy to clean |
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| CN104154807A (en) | 2014-11-19 |
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