CN110078028A - A kind of drying means of sulfosalt mixture - Google Patents
A kind of drying means of sulfosalt mixture Download PDFInfo
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- CN110078028A CN110078028A CN201910311600.2A CN201910311600A CN110078028A CN 110078028 A CN110078028 A CN 110078028A CN 201910311600 A CN201910311600 A CN 201910311600A CN 110078028 A CN110078028 A CN 110078028A
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- sulfosalt
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/02—Foam dispersion or prevention
- B01D19/04—Foam dispersion or prevention by addition of chemical substances
- B01D19/0404—Foam dispersion or prevention by addition of chemical substances characterised by the nature of the chemical substance
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/02—Preparation of sulfur; Purification
- C01B17/0243—Other after-treatment of sulfur
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/02—Preparation of sulfur; Purification
- C01B17/027—Recovery of sulfur from material containing elemental sulfur, e.g. luxmasses or sulfur containing ores; Purification of the recovered sulfur
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/69—Sulfur trioxide; Sulfuric acid
- C01B17/74—Preparation
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/69—Sulfur trioxide; Sulfuric acid
- C01B17/74—Preparation
- C01B17/745—Preparation from sulfates
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Toxicology (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Catalysts (AREA)
- Processing Of Solid Wastes (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention discloses a kind of drying means of sulfosalt mixture comprising following steps: a takes desulfurization waste liquor, sulphur foams mix at sulfosalt mixture, or the sulfosalt mixture from other aspects；b；Catalyst is added in the sulfosalt mixture in step a, it is stirred into sulfosalt mixed serum, wherein catalyst includes the washing powder of the wood fibre of 0-100 parts by weight, the oil plant slag charge of 0-100 parts by weight and 0-0.7 parts by weight, wherein the total weight parts of wood fibre and oil plant slag charge are 100；The sulfosalt mixed serum that c obtains step b is sent into drying system, is dried to obtain containing sulfur powder.The dry powder that drying means of the invention obtains is loose, and prevented from caking, storage time is long, can store half a year or more does not agglomerate, and can burn completely in subsequent sulphuric acid production technology, realize cleanly production, environment is good, improves the degree of automation, it is ensured that normal continuous production.
Description
Technical field
The present invention relates to technical field of desulfurization, more particularly to a kind of drying means of sulfosalt mixture.
Background technique
Coking desulfurization waste liquor and sulphur foam are merged into sulfosalt mixture, sulfosalt mixture is dried to sulfur-bearing sulfate powder
There are many raw material drying method that extracting sulfuric acid is made at end, and what is generallyd use is atomisation tower, rake machine etc., and atomisation tower drying efficiency compares
High but operation difficulty is larger, and rake machine is intermittent blanking, and drying efficiency is single immobilizes, due to sulphur foam waste liquid have compared with
Strong adhesiveness and easily precipitating are easy to happen chemical reaction with itself including ammonium hydroxide and mix to heat up, the easy moisture absorption of salt in powder and
When meeting high temperature, salt and the meltable molten adhesion of sulphur in powder and form lump, therefore the parallelpiped of drying system, nozzle, tower wall
It is easy blocking with equipment exports such as whirlwind, cleaning blocking difficulty is big, is easy to make environment badization, while the steam of atomisation tower and heat
Wind furnace furnace gas mixed tail gas amount is big, and the sulfur-bearing sulfate powder of entrainment is not easy washes clean, these micro mists descend slowly and lightly, and influences air matter
Amount, influencing exhaust emissions cannot be up to standard.
Therefore, for the undesirable feature of desulfurization waste liquor and the sulfosalt mixture of sulphur formation of foam, urgent need develops a kind of sulfosalt
The drying means of mixture makes the drying of sulfosalt mixture that powder be made, and tail gas amount is few, does not carry micro mist secretly, and tail gas is washed by dedusting
After washing, reach tail gas zero-emission.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of drying means of sulfosalt mixture, are locating sulfosalt mixture
During reason, eliminating bubble enhances its mobility, and making substance, stifled do not fill in is not glued, and exhaust emissions is up to standard.
In order to solve the above technical problems, the present invention provides a kind of drying means of sulfosalt mixture comprising following step
It is rapid:
A takes desulfurization waste liquor, sulphur foams mix at sulfosalt mixture, or the sulfosalt mixture from other aspects, such as will
Sulphur cream sulphur mud through being dehydrated is mixed with solid sulfate salt, heats the sulfosalt mixture of acquisition, the present invention does not have sulfosalt mixture
It is particularly limited to, refers mainly to the various sulfur-containing mixtures in industrial production；
b；Catalyst is added in the sulfosalt mixture in step a, is stirred into sulfosalt mixed serum, wherein catalyst
The oil plant slag charge of wood fibre, 0-100 parts by weight including 0-100 parts by weight and the washing powder of 0-0.7 parts by weight, wherein wood
The total weight parts of matter fiber and oil plant slag charge are 100；
The sulfosalt mixed serum that c obtains step b is sent into drying system, is dried to obtain containing sulfur powder.
The drying means of above-mentioned sulfosalt mixture, wherein the step c is to send the sulfosalt mixed serum that step b is obtained
Enter level-one drier, sloughs partial moisture；It further include step d, the sulfosalt mixed serum that step c is obtained is sent into secondary drying device
It is dried, cooling section is equipped with inside the secondary drying device, the granule hardening by cooling after drying is crushed later, obtained
To containing sulfur powder.
The drying means of above-mentioned sulfosalt mixture, wherein in the step d, into step c by the sulfosalt of level-one drying
Female powder is added in mixed serum, is sent into secondary drying device later and is dried, the female powder is to pass through containing sulfur powder or the step d
It is obtained containing sulfur powder to cross secondary drying.
The drying means of above-mentioned sulfosalt mixture, wherein in the step a, sulphur is obtained by filtration in the sulfosalt mixture
Slurries are concentrated by evaporation the filtrate salt water obtained after filtering to obtain salt slurries, after sulphur slurries and salt slurries are mixed to get processing
Sulfosalt mixture.
The drying means of above-mentioned sulfosalt mixture, wherein in the step a, desulfurization waste liquor and sulphur foam mixture are consolidated
Content is 1%-70%.
The drying means of above-mentioned sulfosalt mixture, wherein the additional amount of catalyst is sulfosalt compounding substances in the step b
The 0.1%-6% of amount.
The drying means of above-mentioned sulfosalt mixture, wherein in the step b, the wood fibre is sawdust, bamboo scraps, tree
Skin, cogongrass, shell, husk, straw, stalk or sugarcane.
The drying means of above-mentioned sulfosalt mixture, wherein in the step b, the oil plant slag charge is vegetable oil material or moves
The dregs of fat after plant oil expression；The vegetable oil material be rapeseed, tea seed, Camphor Tree Seeds, whitewood's seed, peanut, sesame, bean or pea cottonseed,
Chinese wax on olive oilseeds or Chinese ash；The dregs of fat after the animals and plants oil expression are that rape is withered, tea seed cake, beans are withered, peanut is withered, sesame
Withered, the olive dregs of fat or the animal dregs of fat etc..
The drying means of above-mentioned sulfosalt mixture, wherein in the step b, the catalyst includes 1-99 parts by weight
Wood fibre, the oil plant slag charge of 1-99 parts by weight and the washing powder of 0.3-0.7 parts by weight.
The drying means of above-mentioned sulfosalt mixture, wherein in the step b, the catalyst includes the oil of 100 parts by weight
The washing powder of material residue material and 0.3-0.7 parts by weight.
The drying means of sulfosalt mixture of the invention has the following beneficial effects:
1, catalyst, energy is added in the sulfosalt mixture of coking desulfurization in the drying means of sulfosalt mixture of the invention
Enough bubbles by sulfosalt mixture are eliminated, and are kept material smooth, are significantly reduced the viscosity of sulfosalt mixture, reduce viscosity, keep away
Antifouling pipeline enables sulfosalt mixture unimpededly to flow into drier and powder is dried into, ensures that production is gone on smoothly；
2, the dry powder obtained using the drying means of sulfosalt mixture of the invention is loose, and prevented from caking, storage time is long,
Can store half a year or more does not agglomerate, and can burn completely in subsequent sulphuric acid production technology, realize cleanly production, environment
Well, the degree of automation is improved, it is ensured that normal continuous production；
3, using the drying means of sulfosalt mixture of the invention, tail gas amount is few, does not carry micro mist secretly, and tail gas is washed by dedusting
After washing, reach tail gas zero-emission.
Detailed description of the invention:
Fig. 1 is the process flow chart of the drying means of sulfosalt mixture of the present invention.
Specific embodiment
Below with reference to Fig. 1 and embodiment the present invention is described in detail.
Embodiment 1
A takes coking desulfurization waste liquor, sulphur foams mix at sulfosalt mixture, which is obtained by filtration sulphur slurry, will
The filtrate salt water obtained after filtering is concentrated by evaporation to obtain salt slurries, and sulphur slurries and salt slurries are mixed to get that treated, and sulfosalt mixes
Object is closed, the solid content of sulfosalt mixture is 50%；
B takes 90 parts by weight sawdust micro mists, 10 parts by weight rapes withered and 0.3 parts by weight washing powder, is ground into 200 mesh micro mists,
Catalyst is made, washing powder uses commercially available washing powder, and catalyst obtained is added to the sulfosalt that step a is obtained and is mixed
In object, additional amount is the 0.3% of sulfosalt mixture quality, is uniformly mixing to obtain sulfosalt mixed serum；
The sulfosalt mixed serum that c obtains step b is sent into level-one drier 1, and partial moisture is taken off；
Step c is sloughed in partial moisture sulfosalt mixed serum feeding secondary drying device 2 and is dried by d, secondary drying device 2
Interior to be equipped with cooling section, by the granule hardening by cooling after drying, dry powder after cooling enters in dry powder transportation system 3, dry powder transport
System 3 crushes dry powder feeding pulverizer 4, obtains sulphur powder, and sulphur powder can be sent into burn in sulfur furnace 5 and carry out
Sulfur-bearing sulfate powder can also be sent into reservoir bag 6 and store by gas washing in SA production.
Preferably, the crushing of pulverizer 4 is obtained into part containing sulfur powder as in female powder feeding secondary drying device 2, and taken off
The sulfosalt mixed serum mixing of partial moisture is common to carry out secondary drying, after addition female powder can make drying in secondary drying device
Sulphur powder it is more loose, it is prevented from caking.
The level-one drier and secondary drying device used in the present embodiment can be bought with market and be obtained.
State, the dry state for obtaining dry powder and the burning of sulfosalt mixture after catalyst are added in the present embodiment, deposits
Storage situation is shown in Table 1.
Embodiment 2-22
The drying means of embodiment 2-22 is identical as the method for embodiment 1, the difference is that the component of catalyst is different,
See Table 1 for details.
Table 1
Infusing viscosimetric analysis temperature is 60 DEG C.
By table 1 it is found that after catalyst is added in sulfosalt mixture in drying means of the invention, sulfosalt mixture
It is provided with good mobility, eliminates the bubble in sulfosalt mixture, the viscosity of sulfosalt mixture is reduced, mixes sulfosalt
Object has good mobility, and after which is dried, obtained dry powder is loose prevented from caking, stores 180 days
Still there is no caking phenomenon, the yield of dry powder can achieve 1.5 ton/hours substantially, and the dry powder obtained after drying is sent into
In subsequent Sulphuric acid production, it can sufficiently burn, improve the yield for preparing sulfuric acid.
Embodiment 23-25
In embodiment 23-25, using with identical catalyst in 1 step c of embodiment, be added in sulfosalt mixture,
Difference from example 1 is that the catalyst ratio that sulfosalt mixture is added is different, see Table 2 for details.
Comparative example 1
It is identical as the drying means of embodiment, the difference is that the step of catalyst is added in cancellation step b.Directly by sulphur
Salt mixture is dried, and the dry dry powder obtained burn and produced for subsequent sulphuric acid.The state of sulfosalt mixture, drying
The state and burning, storage situation for obtaining dry powder are shown in Table 2.
Table 2
Note: viscosimetric analysis temperature is 60 DEG C.
By table 2 it is found that in comparative example 1, catalyst is not added, the viscosity of sulfosalt mixture is 2.491 at this time, flowing
Property is very poor, in embodiment 23, is simply added into 0.1% catalyst, so that it may the viscosity of sulfosalt mixture is reduced to 1.982,
In embodiment 25,5% catalyst is added, the viscosity of sulfosalt mixture can be reduced to 1.712, it is seen then that catalyst is added
The viscosity of sulfosalt mixture is significantly reduced, mobility is improved.Sulfosalt mixture is directly dried in comparative example 1, is obtained
The dry powder arrived is easy agglomeration, caking phenomenon just occurs within storage 7 days, is only capable of 1 ton of dry powder of production per hour, and in sulfosalt mixture
After catalyst is added, the dry powder being dried to obtain can store 180 days without caking phenomenon, and yield can achieve 1.5
Ton or so, than the output increased 50% or so of comparative example 1.In subsequent preparation gas washing in SA production, it is dried to obtain in comparative example 1
Dry powder is unable to full combustion, and the drying means of the invention dry powder that dry sulfosalt mixture obtains after catalyst is added can
Full combustion improves the yield for preparing sulfuric acid.
Claims (10)
1. a kind of drying means of sulfosalt mixture comprising following steps:
A takes desulfurization waste liquor, sulphur foams mix at sulfosalt mixture, or the sulfosalt mixture from other aspects；
Catalyst is added in the sulfosalt mixture in step a b, is stirred into sulfosalt mixed serum, wherein catalyst includes
The washing powder of the wood fibre of 0-100 parts by weight, the oil plant slag charge of 0-100 parts by weight and 0-0.7 parts by weight, wherein wooden fibre
The total weight parts of peacekeeping oil plant slag charge are 100；
The sulfosalt mixed serum that c obtains step b is sent into drying system, is dried to obtain containing sulfur powder.
2. the drying means of sulfosalt mixture as described in claim 1, wherein the step c is the sulfosalt for obtaining step b
Mixed serum is sent into level-one drier, sloughs partial moisture；It further include step d, the sulfosalt mixed serum that step c is obtained is sent into
Secondary drying device is dried, and cooling section is equipped with inside the secondary drying device, and the granule hardening by cooling after drying later will
It is crushed, and is obtained containing sulfur powder.
3. the drying means of sulfosalt mixture as claimed in claim 2, wherein in the step d, one is passed through into step c
Female powder is added in the dry sulfosalt mixed serum of grade, is sent into secondary drying device later and is dried, the female powder is containing sulfur powder
Or the step d contains sulfur powder by secondary drying is obtained.
4. the drying means of sulfosalt mixture as claimed in claim 1 or 2, wherein in the step a, the sulfosalt is mixed
It closes object and sulphur slurries is obtained by filtration, be concentrated by evaporation the filtrate salt water obtained after filtering to obtain salt slurries, by sulphur slurries and salt slurries
The sulfosalt mixture that is mixed to get that treated.
5. the drying means of sulfosalt mixture as described in claim 1, wherein in the step a, desulfurization waste liquor and sulphur foam
The solid content of mixture is 1%-70%.
6. the drying means of sulfosalt mixture as described in claim 1, wherein the additional amount of catalyst is in the step b
The 0.1%-6% of sulfosalt mixture quality.
7. the drying means of sulfosalt mixture as described in claim 1, wherein in the step b, the wood fibre is wood
Bits, bamboo scraps, bark, cogongrass, shell, husk, straw, stalk or sugarcane.
8. the drying means of sulfosalt mixture as described in claim 1, wherein in the step b, the oil plant slag charge is to plant
The dregs of fat after object oil plant or animals and plants oil expression；The vegetable oil material be rapeseed, tea seed, Camphor Tree Seeds, whitewood's seed, peanut, sesame,
Chinese wax on bean or pea, cottonseed, olive oilseeds or Chinese ash；The dregs of fat after animals and plants oil expression be withered rape, tea seed cake, beans it is withered,
Peanut is withered, sesame is withered, the olive dregs of fat or the animal dregs of fat.
9. the drying means of sulfosalt mixture as described in claim 1, wherein in the step b, the catalyst includes 1-
The wood fibre of 99 parts by weight, the oil plant slag charge of 1-99 parts by weight and the washing powder of 0.3-0.7 parts by weight.
10. the drying means of sulfosalt mixture described in claim 1, wherein in the step b, the catalyst includes 100
The oil plant slag charge of parts by weight and the washing powder of 0.3-0.7 parts by weight.
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| CN201810390316 | 2018-04-27 | ||
| CN2018103903164 | 2018-04-27 |
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| CN110078028B CN110078028B (en) | 2022-09-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112238126A (en) * | 2020-09-27 | 2021-01-19 | 萍乡市新安环保工程有限公司 | Treatment method of desulfurization solid waste |
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Cited By (1)
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| CN112238126A (en) * | 2020-09-27 | 2021-01-19 | 萍乡市新安环保工程有限公司 | Treatment method of desulfurization solid waste |
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