CN101392378A - Scale inhibitor special for dry type dust removal blast furnace gas energy recovery turbine set - Google Patents
Scale inhibitor special for dry type dust removal blast furnace gas energy recovery turbine set Download PDFInfo
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- CN101392378A CN101392378A CNA2008101508241A CN200810150824A CN101392378A CN 101392378 A CN101392378 A CN 101392378A CN A2008101508241 A CNA2008101508241 A CN A2008101508241A CN 200810150824 A CN200810150824 A CN 200810150824A CN 101392378 A CN101392378 A CN 101392378A
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Abstract
The invention discloses a dedicated scale inhibitor of a dry dust collection and blast furnace gas energy recovering turbine installation. The scale inhibitor is composed of the following chemical organics according to the weight percentage (the total weight is calculated as 100 percent): 50 percent to 60 percent of bis-imidazoline, 15 percent to 20 percent of cyclohexane, 10 percent to 15 percent of Monoethanolamine and 5 percent to 25 percent of methanol. The dedicated scale inhibitor of the blast furnace gas energy recovering turbine installation is fully composed of organic components and has stable chemical performance and the continuous charging with a metering pump is adopted as a use method on the field. In addition, the scale inhibitor has good antiscale effect to scale caused by gas components due to the dry dust collection of a TRT device.
Description
Technical field
The present invention relates to a kind of Scale inhibitors, particularly a kind of scale inhibitor special for dry type dust removal blast furnace gas energy recovery turbine set.
Background technology
Blast furnace gas energy recovery turbine set, be called for short TRT, be mainly used in pressure that the byproduct (blast furnace gas) that is produced in the blast furnace ironmaking process is had can and the recovery of heat energy, 30%-50% of recyclable blast furnace blowing engine institute energy requirement, economic benefit is very remarkable, is a kind of good energy-saving environmental protection device of iron and steel enterprise.
The medium of TRT device is to eject the coal gas after dedusting that comes from State of Blast Furnace, though what adopt is dry gas cleaning, and dust and saturation vapour that also can residual some amount in the gas phase media.In addition, also have the mist of oil that dust removal installation can not be removed fully in the coal gas, and the multiple sour gas (as: H that produces because of blast furnace raw material is impure
2S, HCL, CO
2Deng).Therefore Gu that finally advances the TRT device is the polyphasic flow of gas-vapour-composition.After coal gas entered the TRT device, because of the acting of expanding, temperature can reduce gradually, and sour gas is dissolved in the condensed water and forms the meagre acid moisture film of one deck at blade surface in the coal gas, and blade surface is caused corrosion failure.Its surface flatness of metal after the corrosion sharply reduces, and makes corrosion product, greasy dirt thing, dust etc. easier of on the blade, simultaneously because the decline of gas temperature, flow velocity, pressure etc., some in the coal gas complicated as: NH
4 +, Cl
-Building-up reactions can take place to form various inorganic compound crystal in (composition of existence is not limited to these) etc., and these inorganics crystal can self also can adsorb impurity in the coal gas on the other hand attached to the metallic surface on the one hand, forms the charged particle of greater particle size.All these charged finely ground particles finally all can sound blade attached to the TRT device on, accumulating over a long period just forms firm salic, cause TRT device energy recovery power to reduce, even it is too high vibration values to occur, device jump stop, problem such as blade obstruction.
Summary of the invention
Defective or deficiency at above-mentioned prior art exists the objective of the invention is to, and a kind of scale inhibitor special for dry type dust removal blast furnace gas energy recovery turbine set is provided.
In order to realize above-mentioned task, the present invention takes following technical solution:
A kind of scale inhibitor special for dry type dust removal blast furnace gas energy recovery turbine set, it is characterized in that, this Scale inhibitors that makes is made of by weight percentage following chemical organic compounds: bi-imidazoline: 50-60%, hexahydroaniline: 15-20%, Monoethanolamine MEA BASF: 10-15%, methyl alcohol: 5%-25%, the per-cent sum of above-mentioned each chemical organic compounds is 100%.
Scale inhibitor special for dry type dust removal blast furnace gas energy recovery turbine set of the present invention is full organic composition, and stable chemical performance, on-the-spot use-pattern are to adopt volume pump to annotate continuously.The TRT device had good scale suppression effect because of the situation of dry gas cleaning method fouling.
Description of drawings
Fig. 1 adds a synoptic diagram for medicament; Label among the figure is represented respectively: 1, blast furnace gas pipeline, 2, dosing mouth (dosing mouth is apart from 5～6 meters of TRT device imports), 3, turbine, 4, the blast furnace gas pipeline, 5, ball valve, 6, tensimeter, 7, volume pump, 8, check valve, 9, Agitation Tank.
The present invention is described in further detail below in conjunction with drawings and Examples.
Embodiment
The present invention is the characteristics according to the fouling of TRT device, the special scale inhibitor special for dry type dust removal blast furnace gas energy recovery turbine set of developing, this dry type scale inhibitor special is made of by weight percentage following chemical organic compounds: bi-imidazoline: 50-60%, hexahydroaniline: 15-20%, Monoethanolamine MEA BASF: 10-15%, methyl alcohol: 5%-25%, the weight percent sum of above-mentioned each chemical organic compounds is 100%.
The molecular structure of described bi-imidazoline is:
Scale inhibitor special for dry type dust removal blast furnace gas energy recovery turbine set provided by the invention, its preparation method is: take by weighing quantitative bi-imidazoline, hexahydroaniline, Monoethanolamine MEA BASF respectively in a certain dosing container, after thorough mixing is even, take by weighing methyl alcohol then in proportion and pour in the dosing container, continue stirring and be dissolved in the methyl alcohol fully until bi-imidazoline, hexahydroaniline, Monoethanolamine MEA BASF.
Below be the embodiment that the contriver provides, need to prove, the invention is not restricted to these embodiment, the formula range in that the present invention provides all can reach purpose of the present invention.
Embodiment 1:
Taking by weighing bi-imidazoline 60%, hexahydroaniline 20% and Monoethanolamine MEA BASF 10% by weight is placed in the dosing container, thorough mixing is even, take by weighing methyl alcohol 10% then in proportion and pour in the dosing container and to continue to stir, be dissolved in the methyl alcohol fully until bi-imidazoline, hexahydroaniline, Monoethanolamine MEA BASF and get final product.
Embodiment 2:
Taking by weighing bi-imidazoline 50%, hexahydroaniline 15% and Monoethanolamine MEA BASF 15% by weight is placed in the dosing container, thorough mixing is even, take by weighing methyl alcohol 20% then in proportion and pour in the dosing container and to continue to stir, be dissolved in the methyl alcohol fully until bi-imidazoline, hexahydroaniline, Monoethanolamine MEA BASF and get final product.
Embodiment 3:
Taking by weighing bi-imidazoline 55%, hexahydroaniline 18% and Monoethanolamine MEA BASF 12% by weight is placed in the dosing container, thorough mixing is even, take by weighing methyl alcohol 15% then in proportion and pour in the dosing container and to continue to stir, be dissolved in the methyl alcohol fully until bi-imidazoline, hexahydroaniline, Monoethanolamine MEA BASF and get final product.
Embodiment 4:
Taking by weighing bi-imidazoline 57%, hexahydroaniline 20% and Monoethanolamine MEA BASF 13% by weight is placed in the dosing container, thorough mixing is even, take by weighing methyl alcohol 10% then in proportion and pour in the dosing container and to continue to stir, be dissolved in the methyl alcohol fully until bi-imidazoline, hexahydroaniline, Monoethanolamine MEA BASF and get final product.
Use the scale inhibitor special of blast furnace gas energy recovery turbine set of the present invention, it adds dose decides on TRT device fouling situation, generally at 80ppm～100ppm.Add agent mouth choice of location before the import of TRT device on the 5-6 rice gas line (Fig. 1).This scale inhibitor special exists form and mechanism to be in dry type TRT device: after scale inhibitor special quantitatively sprays into gas line by volume pump, by waste heat moment gasification of coal gas, enter in the TRT device after in length is the pipeline of 5-6 rice, finishing the uniform mixing with coal gas then.The gas phase Scale inhibitors with the dynamic and static blade of TRT device; after holding the surface contact of metal partss such as cylinder and flue, rely under intermolecular attraction and the effect of heterocycle covalent linkage, form the lipophilic-hydrophobic property protective membrane in the metallic surface; stop inorganic salt fouling crystal, materials such as sour gas contact with the metallic surface.The detailed action principle of scale inhibitor special is: the gas phase Scale inhibitors forms one deck one end parent metal, the hydrophobic inhibition protection film of the other end at blade surface, isolate salt component and sour gas moisture film contacting metal surface, keep TRT device intra vane, to hold each metallic surface, position such as steel smooth all the time; Scale inhibitors after the gasification absorbs a part of sour gas in the coal gas, reduces acidic gas concentration in the coal gas, and then reaches corrosion mitigating effect; Scale inhibitors itself just has the tensio-active agent function simultaneously, therefore utilizes it can realize clean metal surface incessantly, eliminates the metallic surface electric charge, stops various impurity adhering in the metallic surface.
Claims (2)
1, a kind of scale inhibitor special for dry type dust removal blast furnace gas energy recovery turbine set, it is characterized in that, this Scale inhibitors that makes is made of by weight percentage following chemical organic compounds: bi-imidazoline: 50-60%, hexahydroaniline: 15-20%, Monoethanolamine MEA BASF: 10-15%, methyl alcohol: 5%-25%, the weight percent sum of above-mentioned each chemical organic compounds is 100%.
2, scale inhibitor special for dry type dust removal blast furnace gas energy recovery turbine set as claimed in claim 1 is characterized in that, the molecular structure of described bi-imidazoline is:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101508241A CN101392378B (en) | 2008-09-05 | 2008-09-05 | Scale inhibitor special for dry type dust removal blast furnace gas energy recovery turbine set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101508241A CN101392378B (en) | 2008-09-05 | 2008-09-05 | Scale inhibitor special for dry type dust removal blast furnace gas energy recovery turbine set |
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| Publication Number | Publication Date |
|---|---|
| CN101392378A true CN101392378A (en) | 2009-03-25 |
| CN101392378B CN101392378B (en) | 2012-01-25 |
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| CN2008101508241A Active CN101392378B (en) | 2008-09-05 | 2008-09-05 | Scale inhibitor special for dry type dust removal blast furnace gas energy recovery turbine set |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105036365A (en) * | 2015-06-30 | 2015-11-11 | 苏州佑君环境科技有限公司 | Draught fan dedusting stripping scale inhibitor and preparation method thereof |
| CN106011874A (en) * | 2016-05-18 | 2016-10-12 | 陕西驭腾实业有限公司 | Gaseous phase scale inhibitor for multiple types of gas booster fans |
| US10626750B2 (en) | 2016-12-09 | 2020-04-21 | Ecolab Usa Inc. | Top-pressure recovery turbine deposition control |
| CN115323382A (en) * | 2022-08-25 | 2022-11-11 | 湖北海力环保科技股份有限公司 | TRT corrosion and scale inhibitor and preparation method and application thereof |
-
2008
- 2008-09-05 CN CN2008101508241A patent/CN101392378B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105036365A (en) * | 2015-06-30 | 2015-11-11 | 苏州佑君环境科技有限公司 | Draught fan dedusting stripping scale inhibitor and preparation method thereof |
| CN106011874A (en) * | 2016-05-18 | 2016-10-12 | 陕西驭腾实业有限公司 | Gaseous phase scale inhibitor for multiple types of gas booster fans |
| US10626750B2 (en) | 2016-12-09 | 2020-04-21 | Ecolab Usa Inc. | Top-pressure recovery turbine deposition control |
| CN115323382A (en) * | 2022-08-25 | 2022-11-11 | 湖北海力环保科技股份有限公司 | TRT corrosion and scale inhibitor and preparation method and application thereof |
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| Publication number | Publication date |
|---|---|
| CN101392378B (en) | 2012-01-25 |
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Inventor after: Wang Dou Inventor after: Nan Xiling Inventor after: Chen Linlin Inventor after: Sun Biao Inventor after: Sun Hongsheng Inventor after: Xiong Hai Inventor after: Liu Youzhi Inventor after: Huang Lijun Inventor after: Wang Yu Inventor after: Han Xinming Inventor before: Wang Dou Inventor before: Han Xinming Inventor before: Nan Xiling Inventor before: Chen Linlin Inventor before: Sun Biao Inventor before: Sun Hongsheng Inventor before: Xiong Hai Inventor before: Wei Menglin Inventor before: Liu Youzhi Inventor before: Huang Lijun Inventor before: Wang Yu |
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Free format text: CORRECT: INVENTOR; FROM: WANG DOU CHEN LINLIN SUN BIAO SUN HONGSHENG XIONG HAI WEI MENGLIN LIU YOUZHI HUANG LIJUN WANG YU HAN XINMING NAN XILIN TO: WANG DOU CHEN LINLIN SUN BIAO SUN HONGSHENG XIONG HAI LIU YOUZHI HUANG LIJUN WANG YU HAN XINMING NAN XILIN |
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