CN110075918B - Catalyst for drying sulfur pulp waste liquid and preparation method and application thereof - Google Patents
Catalyst for drying sulfur pulp waste liquid and preparation method and application thereof Download PDFInfo
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- CN110075918B CN110075918B CN201910311599.3A CN201910311599A CN110075918B CN 110075918 B CN110075918 B CN 110075918B CN 201910311599 A CN201910311599 A CN 201910311599A CN 110075918 B CN110075918 B CN 110075918B
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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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- 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
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
- B01J31/06—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing polymers
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Abstract
The invention discloses a catalyst for drying sulfur slurry waste liquid, which comprises 100 parts by weight of oil slag material and 0-0.7 part by weight of washing powder, wherein the oil slag material is vegetable oil or oil slag obtained after oil extraction of animals and plants, the vegetable oil is rapeseed, tea seed, camphor tree seed, white wood seed, peanut, sesame, bean, cotton seed, olive oil seed or white wax on a white wax tree, and the oil slag obtained after oil extraction of animals and plants is oil cake, tea cake, bean cake, peanut cake, sesame cake, olive oil slag or animal oil slag. The catalyst disclosed by the invention can eliminate bubbles in the sulfur slurry waste liquid, so that the material is smooth, the viscosity of the sulfur slurry waste liquid is obviously reduced, the viscosity is reduced, the pipeline blockage is avoided, the sulfur slurry waste liquid can smoothly flow into a spray tower or a dryer to be dried into powder, and the smooth production is ensured. The catalyst of the invention has simple formula, easily obtained raw materials, simple preparation method and low cost.
Description
Technical Field
The invention relates to a catalyst, in particular to a catalyst for drying sulfur foam, and also relates to a preparation method and application of the catalyst.
Background
The coking plant can generate desulfurization waste liquid and sulfur foam which mainly contain sulfate components in a desulfurization process, low-quality sulfur exists in the sulfur foam in the form of elemental sulfur, the treatment of the waste liquid and the sulfur foam is a world problem, and the coking desulfurization waste liquid and the sulfur foam are combined and dried into sulfur-containing sulfate powder to be used as a raw material for preparing sulfuric acid. The sulfur foam and the desulfurization waste liquid are mixed into the sulfur slurry waste liquid, the sulfur slurry waste liquid is full of bubbles, poor in fluidity, especially large in viscosity, easy to precipitate, and easy to form hard blocks under the action of high temperature, so that the treatment is hindered, pipelines and nozzles are easy to block, the operation environment is influenced, the blockage is difficult, the pungent smell is strong, the environment is poor, and the human health is damaged.
Therefore, aiming at the bad characteristics of the sulfur slurry waste liquid formed by the desulfurization waste liquid and the sulfur foam, a catalyst is urgently needed to be developed, so that the bubbles of the sulfur slurry waste liquid are eliminated, the fluidity of the catalyst is enhanced, the materials are suspended, do not precipitate, are not blocked, are not sticky, and the purposes of long-term stable production, improvement of automation degree and yield increase are achieved.
Disclosure of Invention
The invention aims to solve the technical problem of providing a catalyst for drying the sulfur slurry waste liquid, which can eliminate bubbles to enhance the fluidity of the sulfur slurry and ensure that substances are not blocked and not sticky in the process of mixing and dissolving the sulfur slurry waste liquid and sulfur foam or the sulfur slurry salt slurry from other aspects, thereby achieving the purposes of increasing the yield and the income for long-term stable production and improving the automation degree.
In order to solve the technical problem, the invention provides a catalyst for drying sulfur pulp waste liquid, which comprises 100 parts by weight of oil slag and 0-0.7 part by weight of washing powder. The washing powder can be commercially available washing powder.
The catalyst for drying the sulfur slurry waste liquid is characterized in that the oil residue material is vegetable oil or oil residue after oil extraction of animals and plants.
The catalyst for drying the sulfur slurry waste liquid is characterized in that the vegetable oil material is white wax on rapeseeds, tea seeds, camphor tree seeds, chinaroot seeds, peanuts, sesames, beans, cotton seeds, olive oil seeds or fraxinus chinensis.
The catalyst for drying the sulfur slurry waste liquid is characterized in that the oil residue after animal and plant oil pressing is rape seed cake, tea seed cake, bean seed cake, peanut seed cake, sesame seed cake, olive oil residue or animal oil residue.
The catalyst for drying the sulfur slurry waste liquid is 10-1000 meshes of micro powder, and preferably 60-300 meshes.
The catalyst for drying the sulfur slurry waste liquid comprises 100 parts by weight of oil slag materials and 0.3-0.7 part by weight of washing powder.
The invention also provides a preparation method of the catalyst for drying the sulfur pulp waste liquid, which comprises the following steps:
a. uniformly mixing the oil slag material and the washing powder in a designed proportion;
b. grinding the mixed substances in the step a into 10-1000 mesh micro powder.
The invention also provides application of the catalyst for drying the sulfur pulp waste liquid, wherein the adding amount of the catalyst is 0.1-5% of the mass of the sulfur pulp waste liquid. The sulfur slurry waste liquid can be sulfur-containing waste liquid generated in various industrial production such as sulfur foam, sulfur paste, sulfur salt mixed liquid formed by mixing sulfur foam and desulfurization waste liquid, and the like.
The application of the catalyst for drying the sulfur pulp waste liquid is characterized in that the mass concentration of the sulfur pulp waste liquid is 10-95%.
The catalyst for drying the sulfur pulp waste liquid has the following beneficial effects:
1. the catalyst disclosed by the invention can eliminate bubbles in the sulfur slurry waste liquid, so that the material is smooth, the viscosity of the sulfur slurry waste liquid is obviously reduced, the viscosity is reduced, the pipeline blockage is avoided, the sulfur slurry waste liquid can smoothly flow into a spray tower or a dryer to be dried into powder, and the smooth production is ensured;
2. the catalyst has the advantages of simple formula, easily obtained raw materials, simple preparation method and low cost;
3. in the process of drying the sulfur pulp waste liquid, only a small amount of the catalyst of the invention needs to be added, so that the bubbles of the sulfur pulp waste liquid can be eliminated, the viscosity is reduced, the fluidity of the sulfur pulp waste liquid is improved, the catalyst is easy to apply, and after the catalyst of the invention is added, the dry powder obtained by drying the sulfur pulp waste liquid is loose, is not easy to agglomerate, has long storage time, can be stored for more than half a year without agglomeration, can be completely incinerated in the subsequent sulfuric acid production process, realizes clean production, has good environment, improves the automation degree, and ensures normal continuous production.
Detailed Description
The present invention will be described in detail with reference to examples.
Example 1
Uniformly mixing 100 parts by weight of rape seed oil cake and 0.3 part by weight of washing powder, and grinding into 200-mesh micro powder to obtain the catalyst. The washing powder is commercially available washing powder.
Mixing the coking desulfurization waste liquid and sulfur foam into a sulfur-salt mixed liquid, filtering the sulfur-salt mixed liquid to obtain sulfur slurry, evaporating and concentrating filtered salt water to obtain salt slurry, and mixing the sulfur slurry and the salt slurry to obtain the sulfur slurry waste liquid, wherein the mass concentration of the sulfur slurry waste liquid is 50%.
The catalyst prepared in the embodiment is added into the sulfur pulp waste liquid, the adding amount is 0.3 percent of the mass of the sulfur pulp waste liquid, then the sulfur pulp waste liquid is dried, and dry powder obtained by drying is burned for the subsequent sulfuric acid production. The state of the sulfur slurry waste liquid after the catalyst addition, the state of the dry powder obtained by drying, and the incineration condition are shown in table 1.
Examples 2 to 10
The catalysts prepared in examples 2-10 were prepared in the same manner as in example 1, except that the catalyst components were different, as detailed in Table 1.
TABLE 1
And (1) injecting the sulfur slurry waste liquid with the mass concentration of 50%.
2. The adding amount of the catalyst is 0.3 percent of the mass of the sulfur pulp waste liquid.
3. The viscosity measurement temperature was 60 ℃.
As can be seen from Table 1, after the catalyst prepared by the method is added into the sulfur slurry waste liquid, the sulfur slurry waste liquid has good fluidity, bubbles in the sulfur slurry waste liquid are eliminated, the viscosity of the sulfur slurry waste liquid is reduced, the sulfur slurry waste liquid has good fluidity, after the sulfur slurry waste liquid is dried, the obtained dry powder is loose and is not easy to agglomerate, the agglomeration phenomenon still does not occur after the sulfur slurry waste liquid is stored for 180 days, the yield of the dry powder can reach more than 1.5 tons/hour, the dry powder obtained after the drying is sent into the subsequent sulfuric acid preparation production, the dry powder can be fully burned, and the yield of the prepared sulfuric acid is improved.
Examples 11 to 13
In examples 11 to 13, the catalyst obtained in example 1 was added to a sulfur slurry waste liquid, and the difference from example 1 was that the ratio of the catalyst to the sulfur slurry waste liquid was different, as shown in Table 2.
Comparative example 1
Directly drying the sulfur pulp waste liquid with the mass concentration of 50%, and burning dry powder obtained by drying for subsequent sulfuric acid production. The state of the sulfur slurry waste liquid, the state of dry powder obtained by drying and the incineration are shown in Table 2.
TABLE 2
Note: 1. the mass concentration of the sulfur pulp waste liquid is 50 percent;
2. the viscosity measurement temperature was 60 ℃.
As can be seen from table 2, in comparative example 1, the viscosity of the slurry waste liquid is 2.491 and the fluidity is poor when the catalyst of the present invention is not added, in example 11, the viscosity of the slurry waste liquid can be reduced to 1.941 by adding only 0.1% of the catalyst, and in example 13, the viscosity of the slurry waste liquid can be reduced to 1.652 by adding 5% of the catalyst, and it can be seen that the viscosity of the slurry waste liquid is significantly reduced and the fluidity is improved when the catalyst of the present invention is added. In the comparative example 1, the sulfur pulp waste liquid is directly dried, the obtained dry powder is easy to agglomerate, the agglomeration phenomenon can occur after the dry powder is stored for 7 days, only 1 ton of dry powder can be produced per hour, after the catalyst of the invention is added into the sulfur pulp waste liquid, the dry powder obtained by drying can be stored for 180 days without the agglomeration phenomenon, the yield can reach more than 1.5 tons, and the yield is improved by more than 50% compared with the yield of the comparative example 1. In the subsequent production of preparing sulfuric acid, the dry powder obtained by drying in the comparative example 1 can not be fully combusted, but the dry powder obtained by drying the sulfur slurry waste liquid after adding the catalyst of the invention can be fully combusted, so that the yield of preparing sulfuric acid is improved.
Claims (5)
1. The application of the catalyst in drying the sulfur pulp waste liquid is characterized by comprising the following steps:
mixing the coking desulfurization waste liquid and sulfur foam into a sulfur-salt mixed liquid;
filtering the sulfur salt mixed solution to obtain sulfur slurry, and evaporating and concentrating filtrate brine obtained after filtering to obtain salt slurry;
mixing the sulfur pulp and the salt pulp to obtain sulfur pulp waste liquid;
adding a catalyst into the sulfur pulp waste liquid, and drying the sulfur pulp waste liquid; and
burning the dry powder obtained by drying;
the catalyst comprises 100 parts by weight of oil slag and 0-0.7 part by weight of washing powder, and the addition amount of the catalyst is 0.1-5% of the mass of the sulfur pulp waste liquid; the mass concentration of the sulfur slurry waste liquid is 50-95%; the oil residue material is vegetable oil or oil residue after oil extraction of animals and plants;
the preparation method of the catalyst comprises the following steps:
a. uniformly mixing the oil slag material and the washing powder in a designed proportion;
b. grinding the mixed substances in the step a into 10-1000 mesh micro powder.
2. Use as claimed in claim 1 wherein the vegetable oil is white wax from rapeseed, tea seed, camphor tree seed, quebracho seed, peanut, sesame, bean, cotton seed, olive oil seed or ash.
3. The use of claim 1, wherein the oil residue obtained after oil extraction of animals and plants is rape seed cake, tea seed cake, bean seed cake, peanut seed cake, sesame seed cake, olive oil residue or animal oil residue.
4. Use according to claim 1, wherein the catalyst is a 60-300 mesh micropowder.
5. Use according to claim 1, wherein the catalyst comprises 100 parts by weight of oil slag and 0.3 to 0.7 parts by weight of washing powder.
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| CN110075918B true CN110075918B (en) | 2022-09-30 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104307215A (en) * | 2014-09-28 | 2015-01-28 | 江苏斯德瑞克化工有限公司 | Vegetable oil modified defoaming agent and preparation method thereof |
| CN105749588A (en) * | 2016-02-29 | 2016-07-13 | 苏州印丝特纺织数码科技有限公司 | Silicon-free defoaming agent for textiles and preparation method of silicon-free defoaming agent |
| CN107469413A (en) * | 2017-10-09 | 2017-12-15 | 常州禾吉纺织品有限公司 | A kind of preparation method of alkaline-resisting defoamer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7427350B2 (en) * | 2003-11-25 | 2008-09-23 | Baker Hughes Incorporated | Silicone defoamer to better control hydrocarbon foam and reduce silicon content of liquid hydrocarbon products |
| CN102489133A (en) * | 2011-12-06 | 2012-06-13 | 江西省电力科学研究院 | Desulfurization slurry stabilizing agent for wet limestone flue gas desulfurization, and using method of desulfurization slurry stabilizing agent |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104307215A (en) * | 2014-09-28 | 2015-01-28 | 江苏斯德瑞克化工有限公司 | Vegetable oil modified defoaming agent and preparation method thereof |
| CN105749588A (en) * | 2016-02-29 | 2016-07-13 | 苏州印丝特纺织数码科技有限公司 | Silicon-free defoaming agent for textiles and preparation method of silicon-free defoaming agent |
| CN107469413A (en) * | 2017-10-09 | 2017-12-15 | 常州禾吉纺织品有限公司 | A kind of preparation method of alkaline-resisting defoamer |
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