CN109647544A - A kind of technique of the composite regenerated waste and old copper bismuth catalyst of recycling of wet-dry change - Google Patents
A kind of technique of the composite regenerated waste and old copper bismuth catalyst of recycling of wet-dry change Download PDFInfo
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- CN109647544A CN109647544A CN201910003301.2A CN201910003301A CN109647544A CN 109647544 A CN109647544 A CN 109647544A CN 201910003301 A CN201910003301 A CN 201910003301A CN 109647544 A CN109647544 A CN 109647544A
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- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J38/00—Regeneration or reactivation of catalysts, in general
- B01J38/02—Heat treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
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- 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
- B01D53/02—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 adsorption, e.g. preparative gas chromatography
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- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/62—Carbon oxides
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- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8603—Removing sulfur compounds
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- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/843—Arsenic, antimony or bismuth
- B01J23/8437—Bismuth
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/90—Regeneration or reactivation
- B01J23/94—Regeneration or reactivation of catalysts comprising metals, oxides or hydroxides of the iron group metals or copper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J38/00—Regeneration or reactivation of catalysts, in general
- B01J38/04—Gas or vapour treating; Treating by using liquids vaporisable upon contacting spent catalyst
- B01J38/12—Treating with free oxygen-containing gas
- B01J38/16—Oxidation gas comprising essentially steam and oxygen
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J38/00—Regeneration or reactivation of catalysts, in general
- B01J38/72—Regeneration or reactivation of catalysts, in general including segregation of diverse particles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/60—Heavy metals or heavy metal compounds
- B01D2257/602—Mercury or mercury compounds
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The present invention provides a kind of techniques of the composite regenerated waste and old copper bismuth catalyst of recycling of wet-dry change, comprising the following steps: slurries conveying is activated, catalyst regeneration recycling, fume treatment.The present invention recycles catalyst using the method regeneration that wet-dry change combines, and uses activation furnace in activation process step, realizes catalyst dry regeneration at high temperature.The hydrometallurgic recovery for carrying out catalyst in catalyst regeneration recycling step using classification recyclable device, forms catalyst slurry.Pass through the harmful components such as oxynitrides and the sulfide that high temperature fume dust removal purifying integration device removes in flue gas in fume treatment step, purified flue gas recycles thermal energy by heat exchanger, then, part of flue gas is passed through in activation furnace, improve activation furnace efficiency, achieve the effect that it is energy-efficient, another part flue gas by washer and demercuration absorber washing demercuration after again pass by heat exchanger heating after discharge, eliminate white plumage, entire process efficient energy conservation, non-wastewater discharge.
Description
Technical field
The present invention relates to the composite regenerated waste and old copper bismuths of recycling of chemical industry dangerous waste processing technology field more particularly to a kind of wet-dry change
The technique of catalyst.
Background technique
The copper bismuth catalyst of alkynes aldehyde reaction in BDO industry, in use because of mechanical wear, surface deposits it is excessive,
The reasons such as copper ion is lost, carrier falls off cause active reduction, need to periodically replace discharge, 100 tons of annual fresh makeup catalyst
Left and right, generates a large sum of about 20,000,000 yuan of expense, and about 800-1000 tons of the dead catalyst slurries displaced are carried out as dangerous waste product
Processing, about 800,000 yuan of processing cost.The difficulty that check-ins is transported in acetylene copper category explosive substance in dead catalyst main component, strange land,
If parking at the scene for a long time, it may occur that spontaneous combustion and leakage problem cause serious pollution to environment and there are security risks.Cause
This, needs to carry out waste and old copper bismuth catalyst regeneration recycling, realizes internal environmental protection treatment, while reducing its processing cost.
In view of this, it is necessary to catalyst recovery process in the prior art be improved, to solve the above problems.
Summary of the invention
It is an object of the invention to disclose a kind of technique of composite regenerated waste and old copper bismuth catalyst of recycling of wet-dry change, using dry
The method regeneration recycling copper bismuth catalyst that wet process combines, using in high temperature fume dust removal purification integration apparatus processing front process
The exhaust gas of generation recycles thermal energy by heat exchanger, achievees the effect that energy-efficient.
To achieve the above object, the present invention provides a kind of works of the composite regenerated waste and old copper bismuth catalyst of recycling of wet-dry change
Skill, which comprises the following steps:
Step 1): slurries conveying: by catalyst slurry from being discharged into the first stirred surge tank in production equipment, then pass through first
Above-mentioned slurries are delivered in hydrocyclone by delivery pump, enter the by hydrocyclone treated lower catalyst agent slurries
Two stirred surge tanks, hydrocyclone supernatant liquor pass through pipeline to washer water supplement port；
Step 2: it is activated: lower catalyst agent slurries being delivered to by activation furnace top feed mouth by the second delivery pump and are gone forward side by side
Row atomization, then reacted with the hot wind in activation furnace, activation furnace is discharged with hot wind in the catalyst granules obtained after reaction；
Step 3): catalyst regeneration recycling: catalyst granules is classified recycling dress under the action of high temperature draught fan, into catalyst
It is classified in setting, the catalyst granules of catalyst classification recyclable device discharge enters high temperature fume dust removal purification one with hot wind
Makeup is set, and the catalyst granules being trapped is recovered；
Step 4): fume treatment: the catalyst granules flue gas of classification recyclable device discharge enters high temperature fume dust removal purification one
Makeup is set, and is handled by purification filtering, and purified flue gas is sent to heat exchanger cooling by air-introduced machine and handled, a portion cigarette
Gas passes through washer carrying out washing treatment, then is passed through demercuration absorber demercuration, smoke stack emission is sent into after heating up finally by heat exchanger, separately
Part of smoke, which enters in activation furnace, to be recycled.
In some embodiments, in step 1: concentration of slurry control is stirred 1~20%, second in the first stirred surge tank
The control of surge tank concentration of slurry is mixed 10~40%.
In some embodiments, in step 2: hot blast temperature is 200~2500 DEG C in activation furnace, activation furnace exhaust outlet temperature
Degree is 150~1000 DEG C.
In some embodiments, in step 4: purified flue gas is cooled to 100~700 DEG C by heat exchanger, enters
The flue gas of washer is cooled to 40~80 DEG C again, then by demercuration absorber demercuration, mercury content is brought down below 0.03mg/
m3, finally discharged after heat exchanger is warming up to 100~500 DEG C.
In some embodiments, in step 4: purified exhaust gas dust content is lower than 3mg/Nm3, oxynitrides contains
Amount is lower than 30mg/Nm3, carbon monoxide content is lower than 20mg/Nm3。
Compared with prior art, the beneficial effects of the present invention are: (1) is urged using the regeneration recycling of wet-dry change complex method is waste and old
Agent reduces production cost using high temperature fume dust removal purifying integration device dry desulfurization, denitration, dedusting, improves recycling effect
Rate；(2) hot wind and spent catalyst slurry reaction are abundant in activation furnace, and catalyst regeneration is high-efficient；(3) flue gas is by heat exchange
After reason, part of off-gas recovery is utilized, energy-saving and emission-reduction, is discharged after the heating of another part flue gas, realizes white, the no waste water row that disappears
It puts.
Detailed description of the invention
Fig. 1 is the process schematic representation of the composite regenerated waste and old copper bismuth catalyst of recycling of wet-dry change.
Detailed description of the invention: 1, the first stirred surge tank；2, the first delivery pump；3, hydrocyclone；4, the second stirred surge tank；
5, the second delivery pump；6, activation furnace；61, atomization structure；7, air filter；8, hot-blast stove；9, grader；10, chilling sprays
Section；101, chilling circulating slot；11, first circulation pumps；12, high temperature fume dust removal purifying integration device；13, high temperature draught fan；
14, heat exchanger, 15, washer；16, second circulation pumps；17, demercuration absorber；18, chimney.
Specific embodiment
The present invention is described in detail for each embodiment shown in reference to the accompanying drawing, but it should be stated that, these
Embodiment is not limitation of the present invention, those of ordinary skill in the art according to these embodiments made by function, method,
Or equivalent transformation or substitution in structure, all belong to the scope of protection of the present invention within.
Embodiment 1:
As shown in Figure 1, the invention discloses a kind of technique of the composite regenerated waste and old copper bismuth catalyst of recycling of wet-dry change, including it is following
Step:
Step 1): catalyst slurry slurries conveying: is discharged into the first stirred surge tank 1 from production equipment with 20kg/h flow
In, and controlling concentration of slurry is 1%, and then slurries are delivered in hydrocyclone 3 by the first delivery pump 2, are revolved by waterpower
Treated that lower catalyst agent slurries are concentrated into 10% and enters the second stirred surge tank 4,3 supernatant liquor of hydrocyclone for stream device 3
Pass through pipeline to the water supplement port of washer 15.
Step 2: it is activated: lower catalyst agent slurries is delivered to by 6 top feed of activation furnace by the second delivery pump 5
Mouth is simultaneously atomized, and atomization structure 61 is equipped at the top of activation furnace 6, and the preferred high-pressure spray gun atomizer of the present embodiment is atomization structure
61, catalyst slurry can be atomized to the drop for micron order or submicron order.Activation furnace 6 and hot-blast stove 8 connect, air warp
It crosses after air filter 7 filters to enter in hot-blast stove 8 and is heated to 200 DEG C, then risen by the rotation of 6 lower section inlet at high of activation furnace
It inversely contacts with catalyst droplets, sufficiently reacts, liquid water is evaporated, and vapor blows the hole blocked in catalyst
It sweeps, while controlling the oxygen content in hot wind, make the combustible organic of catalyst surface that oxidation reaction occur, realize catalyst again
It is raw.Select suitable activation furnace 6 guarantee catalyst in activation furnace 6 reaction time for 1s and catalyst particles that partial size is 10 μm
Grain will not settle, and temperature descending section is equipped with above activation furnace 6, catalyst granules is cooled to 150 with hot wind using deionized water
Activation furnace 6 is discharged after DEG C.
Step 3): catalyst regeneration recycling: catalyst granules is classified under the action of high temperature draught fan 13 into catalyst
It being classified in recyclable device, the classification recyclable device is made of grader 9, chilling spray section 10, chilling circulating slot 101,
Cyclone separator or enforced classification machine, the preferred enforced classification machine of the present embodiment can be used in grader 9.Catalyst granules flue gas edge
9 shell of grader tangentially enters, and the catalyst greater than 1 μm is discharged into chilling spray section 10, chilling spray by 9 bottom of grader
It is equipped with Bidirectional nozzle in section 10, spraying cooling is carried out to the high temperature catalyst of whereabouts, 101 circular flow of chilling circulating slot is
10m3/ h, circulated sprinkling temperature are 50 DEG C, and recycling catalyst slurries are controlled 10%.It is furnished with temperature sensing on chilling circulating slot 101
Device, liquid level sensor are detected and are controlled to liquid level in the circulating temperature of this section, slot, when circulating temperature is higher, increase pole
Cold water spray section fresh water rate of water make-up.11 connection catalyst recovery system of first circulation pump, realizes series classification recovery processing, guarantees
For 1 μm or more of catalyst recovery yield up to 99%, the catalyst flue gas less than 1 μm enters high temperature fume dust removal purification one makeup
It sets in 12.
Step 4): refractory ceramics chimney filter, high temperature pottery fume treatment: are equipped in high temperature fume dust removal purifying integration device 12
Catalyst is contained on porcelain chimney filter surface, can directly carry out desulphurization denitration decarburization at high temperature, realizes dust separation integrated treatment,
It is also equipped with blowback system in high temperature fume dust removal purifying integration device 12, the regular blowback of ceramic screen pipe is cleared up.It is purified
Catalyst flue gas is sent to 14 cooling of heat exchanger by high temperature draught fan 13 and is handled, and temperature is down to 100 DEG C, a portion flue gas into
Enter 15 carrying out washing treatment of washer, flue-gas temperature is down to 40 DEG C again, washer 15 can be Venturi scrubber or void tower
Sprayer-washer, the preferred Venturi scrubber of the present embodiment.Washer 15 is using circulation washing, circular flow 20m3/ h, often
Hour needs to give washer 15 moisturizing 250kg, and wherein 130kg is provided by hydrocyclone 3, the discharge of wastewater of 15 lower section of washer
Amount is 350kg/h, is emitted into chilling spray section 10 by second circulation pump 16.Catalyst flue gas after washing enters demercuration absorption
17 demercuration of device, mercury content are down to 0.03mg/m3, it is sent into chimney 18 after being warming up to 120 DEG C finally by heat exchanger 14 and discharges, realizes
Disappear white.Another part flue gas, which enters, adjusts air quantity and temperature in activation furnace 6 in activation furnace 6, be recycled.
The present embodiment regeneration recycling spent catalyst, it is ensured that catalyst regeneration recycling overall efficiency is up to 95% or more, cigarette
Gas discharges dust content and is lower than 3mg/Nm3, oxynitrides content is lower than 30mg/Nm3, content of sulfur dioxide is lower than 10mg/Nm3,
Mercury content is lower than 0.03mg/Nm3, smoke evacuation is without Bai Yu, no waste water generation.
Embodiment 2:
As shown in Figure 1, the invention discloses a kind of technique of the composite regenerated waste and old copper bismuth catalyst of recycling of wet-dry change, including it is following
Step:
Step 1): catalyst slurry slurries conveying: is discharged into the first stirred surge tank 1 from production equipment with 60kg/h flow
In, and controlling concentration of slurry is 20%, then slurries is delivered in hydrocyclone 3 by the first delivery pump 2, by waterpower
Treated that lower catalyst agent slurries are concentrated into 40% and enters the second stirred surge tank 4 for cyclone 3, and 3 upper layer of hydrocyclone is clear
The water supplement port that liquid passes through pipeline to washer 15.
Step 2: it is activated: lower catalyst agent slurries is delivered to by 6 top feed of activation furnace by the second delivery pump 5
Mouth is simultaneously atomized, and atomization structure 61 is equipped at the top of activation furnace 6, and the preferred dynamic rotary disk of the present embodiment is atomization structure 61, institute
Stating dynamic rotary disk rotating speed is 10000rpm, using centrifugal atomizing mode, catalyst slurry can be atomized as micron order or
The drop of submicron order.Activation furnace 6 and hot-blast stove 8 connect, and air enters in hot-blast stove 8 after the filtering of air filter 7 and adds
Heat is to 2000 DEG C, then is risen by the rotation of 6 lower section inlet at high of activation furnace and inversely contacted with catalyst droplets, sufficiently reacts, liquid
State water is evaporated, and vapor purges the hole blocked in catalyst, while controlling the oxygen content in hot wind, makes catalyst
Oxidation reaction occurs for the combustible organic on surface, realizes catalyst regeneration.Suitable activation furnace 6 is selected to guarantee that catalyst is activating
The catalyst granules that the reaction time is 10s in furnace 6 and partial size is 300 μm will not settle, and cooling is equipped with above activation furnace 6
Activation furnace 6 is discharged in section after catalyst granules is cooled to 900 DEG C with hot wind using deionized water.
Step 3): catalyst regeneration recycling: catalyst granules is classified under the action of high temperature draught fan 13 into catalyst
It being classified in recyclable device, the classification recyclable device is made of grader 9, chilling spray section 10, chilling circulating slot 101,
Cyclone separator or enforced classification machine, the preferred cyclone separator of the present embodiment can be used in grader 9.Catalyst granules flue gas edge
9 shell of grader tangentially enters, and the catalyst greater than 1 μm is discharged into chilling spray section 10, chilling spray by 9 bottom of grader
It is equipped with Bidirectional nozzle in section 10, spraying cooling is carried out to the high temperature catalyst of whereabouts, 101 circular flow of chilling circulating slot is
15m3/ h, circulated sprinkling temperature are 60 DEG C, and recycling catalyst slurries are controlled 15%.It is furnished with temperature sensing on chilling circulating slot 101
Device, liquid level sensor are detected and are controlled to liquid level in the circulating temperature of this section, slot, when circulating temperature is higher, increase pole
Cold water spray section fresh water rate of water make-up.11 connection catalyst recovery system of first circulation pump, realizes series classification recovery processing, guarantees
For 1 μm or more of catalyst recovery yield up to 99%, the catalyst flue gas less than 1 μm enters high temperature fume dust removal purification one makeup
It sets in 12.
Step 4): refractory ceramics chimney filter, high temperature pottery fume treatment: are equipped in high temperature fume dust removal purifying integration device 12
Catalyst is contained on porcelain chimney filter surface, can directly carry out desulphurization denitration decarburization at high temperature, realizes dust separation integrated treatment,
It is also equipped with blowback system in high temperature fume dust removal purifying integration device 12, the regular blowback of ceramic screen pipe is cleared up.It is purified
Catalyst flue gas is sent to 14 cooling of heat exchanger by high temperature draught fan 13 and is handled, and temperature is down to 700 DEG C, a portion flue gas into
Enter 15 carrying out washing treatment of washer, flue-gas temperature is down to 70 DEG C again, washer 15 can be rotary-cut stream washer or pneumatic
Emulsify washer or padding washing device, the preferred rotary-cut stream washer of the present embodiment.Washer 15 is using circulation washing, recycle stream
Amount is 30m3/ h needs to give washer 15 moisturizing 550kg per hour, and wherein 200kg is provided by hydrocyclone 3, washer 15
The wastewater discharge of lower section is 500kg/h, is emitted into chilling spray section 10 by second circulation pump 16.Catalyst cigarette after washing
Gas enters 17 demercuration of demercuration absorber, and mercury content is down to 0.03mg/m3, it is sent into after being warming up to 150 DEG C finally by heat exchanger 14
Chimney 18 discharges, and realization disappears white.Another part flue gas, which enters, adjusts air quantity and temperature in activation furnace 6 in activation furnace 6, circulation makes
With.
The present embodiment regeneration recycling spent catalyst, it is ensured that catalyst regeneration recycling overall efficiency is up to 95% or more, cigarette
Gas discharges dust content and is lower than 3mg/Nm3, oxynitrides content is lower than 30mg/Nm3, content of sulfur dioxide is lower than 10mg/Nm3,
Mercury content is lower than 0.03mg/Nm3, smoke evacuation is without Bai Yu, no waste water generation.
The series of detailed descriptions listed above only for feasible embodiment of the invention specifically
Protection scope bright, that they are not intended to limit the invention, it is all without departing from equivalent implementations made by technical spirit of the present invention
Or change should all be included in the protection scope of the present invention.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (5)
1. a kind of technique of the composite regenerated waste and old copper bismuth catalyst of recycling of wet-dry change, which comprises the following steps:
Step 1): slurries conveying: by catalyst slurry from being discharged into the first stirred surge tank in production equipment, then pass through first
Above-mentioned slurries are delivered in hydrocyclone by delivery pump, enter the by hydrocyclone treated lower catalyst agent slurries
Two stirred surge tanks, hydrocyclone supernatant liquor pass through pipeline to washer water supplement port；
Step 2: it is activated: lower catalyst agent slurries being delivered to by activation furnace top feed mouth by the second delivery pump and are gone forward side by side
Row atomization, then reacted with the hot wind in activation furnace, activation furnace is discharged with hot wind in the catalyst granules obtained after reaction；
Step 3): catalyst regeneration recycling: catalyst granules is classified recycling dress under the action of high temperature draught fan, into catalyst
It is classified in setting, the catalyst granules of catalyst classification recyclable device discharge enters high temperature fume dust removal purification one with hot wind
Makeup is set, and the catalyst granules being trapped is recovered；
Step 4): fume treatment: the catalyst granules flue gas of classification recyclable device discharge enters high temperature fume dust removal purification one
Makeup is set, and is handled by purification filtering, and purified flue gas is sent to heat exchanger cooling by air-introduced machine and handled, a portion cigarette
Gas passes through washer carrying out washing treatment, then is passed through demercuration absorber demercuration, smoke stack emission is sent into after heating up finally by heat exchanger, separately
Part of smoke, which enters in activation furnace, to be recycled.
2. the technique of the compound waste and old copper bismuth catalyst of recycling of wet-dry change according to claim 1, which is characterized in that step 1
In: concentration of slurry control is controlled in 1~20%, second stirred surge tank concentration of slurry 10~40% in the first stirred surge tank.
3. the technique of the compound waste and old copper bismuth catalyst of recycling of wet-dry change according to claim 1, which is characterized in that step 2
In: hot blast temperature is 200~2500 DEG C in activation furnace, and activation furnace exhaust outlet temperature is 150~1000 DEG C.
4. the technique of the compound waste and old copper bismuth catalyst of recycling of wet-dry change according to claim 1, which is characterized in that step 4
In: purified flue gas is cooled to 100~700 DEG C by heat exchanger, and the flue gas into washer is cooled to 40~80 DEG C again,
Again by demercuration absorber demercuration, mercury content is brought down below 0.03mg/m3, finally 100~500 DEG C are warming up to by heat exchanger
After discharge.
5. the technique of the compound waste and old copper bismuth catalyst of recycling of wet-dry change according to claim 1, which is characterized in that step 4
In: purified exhaust gas dust content is lower than 3mg/Nm3, oxynitrides content is lower than 30mg/Nm3, carbon monoxide content is lower than
20mg/Nm3。
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113209980A (en) * | 2021-04-25 | 2021-08-06 | 西安航天源动力工程有限公司 | Regeneration method of waste copper bismuth catalyst |
| CN113231109A (en) * | 2021-04-25 | 2021-08-10 | 西安航天源动力工程有限公司 | Waste catalyst regeneration reaction furnace |
| CN114433250A (en) * | 2020-10-16 | 2022-05-06 | 中国石油化工股份有限公司 | Slurry recovery device, slurry preparation system and slurry recovery method |
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| CN109647544B (en) | 2021-06-11 |
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