CN1045194C - Deoxidant and its preparing process - Google Patents
Deoxidant and its preparing process Download PDFInfo
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- CN1045194C CN1045194C CN 92112410 CN92112410A CN1045194C CN 1045194 C CN1045194 C CN 1045194C CN 92112410 CN92112410 CN 92112410 CN 92112410 A CN92112410 A CN 92112410A CN 1045194 C CN1045194 C CN 1045194C
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- coal
- deoxidant
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Abstract
The present invention relates to a boiler feed water deoxidant and a preparing method thereof. The deoxidant uses coal or fruit shells as raw materials to which carbonization, intermediate activation and treatment which is carried out by potassium permanganate alkaline solution are carried out to form coal (or charcoal)-oxygen complex compounds. The present invention can rapidly remove a large amount of oxygen, and every kilo of the deoxidant can treat as much as 240 to 280 tons of water.
Description
The present invention relates to the deaeration reaction agent and the method for making thereof of oiler feed, particularly the gas phase deaeration reaction agent and the method for making thereof of oiler feed.
As everyone knows, oiler feed need be softened on the one hand in case incrustation scale then needs to contain oxygen with corrosion protection equipment and pipeline except that in anhydrating on the one hand.In the prior art, the deoxygenation mode that is used for the oiler feed of suitability for industrialized production has thermal de-aeration, deaeration in condenser, Deadsorbing and oxygen removing and medicine deoxygenation etc., wherein thermal de-aeration and deaeration in condenser exist the shortcoming that power consumption is big, the deoxygenation cost is high, defect such as dose is wayward, the removing of resistates and the medicine deoxygenation also exists, and medicine is also more expensive.It is simple that the Deadsorbing and oxygen removing method has equipment.Take up an area of the advantage little, easy to operate, that expense is low, yet the popularization that influences the Deadsorbing and oxygen removing method is this method uses charcoal as deaeration reaction agent, as 3093 deaeration reaction agents that the shanxi coal chemistry institute is produced, exist reactive behavior low, handle that the water yield is little, big, the susceptible to plugging shortcoming of pipeline of loading and unloading charcoal labour intensity.
The purpose of this invention is to provide a kind of novel deaeration reaction agent that is used for the deoxygenation of Deadsorbing and oxygen removing method gas phase, it is big with the water treatment amount, and it is simple to make reagent, and equipment pipe is difficult for advantages such as obstruction.
The present invention implements like this, it is to handle the middle activator that coal or shell are made with the basic solution of potassium permanganate, and form a kind of very high deaeration reaction agent of activity that contains charcoal-oxygen complex, its principle is basis " coal chemistry " 1984, metallurgical industry press, 121-122,127 pages of relevant basic solutions of potassium permanganate that adopt are handled coal, make it that deep oxidation take place, thereby the activity that makes coal and oxygen reaction have height is removed the oxygen in the gas phase.
The present invention specifically implements like this:
The first step: the screening of raw material: choose low ash.The coal or the shell (as nut-shell, coconut husk, apricot shell etc.) of low moisture content carry out fragmentation, get granularity 2.5-4.5m/m as raw material.
Second step: charing: the qualified raw material of granularity is packed in the charring furnace, at 600-700 ℃ of following charing 30-40 minute.
The 3rd step: middle activation: feed superheated vapour in charring furnace, temperature is 850-900 ℃ and carries out centre activation 60-75 hour.
The 4th step: the preparation of treatment solution: at room temperature press row weight part ratio and prepare:
Water: potassium permanganate: sodium hydroxide=(98.5-85): (1-10): 0.5-5.0)
The 5th step: final activation: with middle activated coal (or charcoal) the 10-40 kilogram in the 3rd step, drop in 100 kilograms the treatment solution of the 4th step preparation and handle, temperature is controlled between 40 ℃-60 ℃, time is 15-60 minute, dry then to water content and till 8%, become deaeration reaction agent of the present invention, the carbon content of this deaeration reaction agent is＞65%, granularity 2.0-4.0mm.
The treatment capacity of water is 250-280 ton/kilogram deaeration reaction agent.Water oxygen level is from 7mg/kg/H
2O handles 0.07mg/kg/H
2O} is 230-240 than the deaeration reaction agent treatment capacity of prior art) much higher.
Following preference elaborates to the present invention but does not limit the scope of the invention.
Example 1: will hang down the fat coal of the low moisture content of ash, and pulverize, and choose 100 fens jin of granularity of 2.5-4.5m/m with general crusher.Pack in the general charring furnace in 650 ℃ ± 10 ℃ following charings 35 minutes, feed superheated vapour then in this stove, keeping temperature is 870 ℃ ± 10 ℃ activation 65 hours, take out this in the middle of activator stand-by.
Press the column weight amount and recently prepare treatment solution, i.e. water: potassium permanganate: sodium hydroxide=90 kilogram: 8 kilograms: 2 kilograms.Carry in this treatment solution of 100 kilograms into 25 kilograms of middle activators, temperature is controlled at 50 ℃ ± 5 ℃, and the time is 25 minutes, and taking out filtering drying to water content then is 7% one-tenth deaeration reaction agent of the present invention.Analytical results, carbon content are 65.5%, and granularity is 3.2m/m, and the water treatment amount is 250 tons/kilogram.
Example 2: remove and adopt nut-shell to replace coal and treatment solution proportioning to change water into: potassium permanganate: sodium hydroxide=95: 4: 1, and middle activator changes into outside 35 kilograms, all the other conditions are identical with example 1, the carbon content that makes deaeration reaction agent of the present invention is that 70.0% granularity is 2.8m/m, and the treatment capacity of water is 270 tons/kilogram.
Advantage of the present invention:
1, the water treatment amount of deaeration reaction agent is big.
2, make simply, raw material is cheap, and the source is abundant.
3, equipment there is not specific (special) requirements.
Claims (1)
1, a kind of deaeration reaction agent of oiler feed is characterized in that: following raw material and method for making:
The first step is carried out fragmentation to the coal or the shell of low moisture content, gets granularity 2.5-4.5m/m as raw material; Second goes on foot in the charring furnace of packing into, at 600-700 ℃ of following charing 30-40 minute; The 3rd step fed superheated vapour in charring furnace, temperature is 850-900 ℃ and carries out centre activation 60-75 hour; The 4th step at room temperature pressed row weight part ratio and prepares: water: potassium permanganate: sodium hydroxide=(98.5-85): (1-10): (0.5-5.0); Handle in the treatment solution of the 5th step with the 4th step preparation of 100 kilograms of the 3rd middle activated coal 10-40 kilogram inputs that goes on foot, temperature is controlled at 40-60 ℃, and the time is 15-60 minute, then oven dry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92112410 CN1045194C (en) | 1992-10-29 | 1992-10-29 | Deoxidant and its preparing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92112410 CN1045194C (en) | 1992-10-29 | 1992-10-29 | Deoxidant and its preparing process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1071896A CN1071896A (en) | 1993-05-12 |
| CN1045194C true CN1045194C (en) | 1999-09-22 |
Family
ID=4945939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92112410 Expired - Fee Related CN1045194C (en) | 1992-10-29 | 1992-10-29 | Deoxidant and its preparing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1045194C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102553539A (en) * | 2012-01-11 | 2012-07-11 | 华南理工大学 | Biomass modified adsorbent capable of adsorbing cadmium ions and preparation method and application thereof |
-
1992
- 1992-10-29 CN CN 92112410 patent/CN1045194C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1071896A (en) | 1993-05-12 |
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| CF01 | Termination of patent right due to non-payment of annual fee |