Method for preparing oilfield additive calcium bromide

The technology of an oilfield additive and calcium bromide, which is applied in the field of preparation of calcium bromide, can solve problems such as packaging, transportation and storage troubles, low yield of ferrous bromide method, affecting product quality, etc. Inexpensive, inexpensive effects

Inactive Publication Date: 2009-03-25
潍坊强源化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Yet ferrous bromide method productive rate is low (about 66.7%), and the scrap iron that needs to use is mostly planing, milling, lathe scrap as main raw material, and there are many oily stains, and cleaning has increased pr

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The method utilizing hydrobromic acid of the present embodiment to prepare oilfield additive calcium bromide adopts the following steps:

[0019] (1) Lime emulsification: Add 120kg of water to the 2000L batching tank made of glass steel, then start stirring, and slowly pour 260kg of quicklime into the batching tank until the feed liquid is evenly distributed;

[0020] (2) neutralization: gradually add the hydrobromic acid of 1360kg in batching tank, add in 35 minutes, after stirring again for 8 minutes, adjust the pH value to 6.8;

[0021] (3) Impurity treatment: 5kg of activated carbon, 10kg of activated clay and 3kg of 60-purpose chitosan leftovers were added to the above feed liquid and stirred and adsorbed for 60 minutes;

[0022] (4) Settling and filtering: after the feed liquid is put into the sedimentation tank for 4.5 hours, extract the above feed liquid into a filter press for pressure filtration, and collect the filtrate to the filtrate storage tank;

[0023]...

Embodiment 2

[0026] The method utilizing hydrobromic acid of the present embodiment to prepare oilfield additive calcium bromide adopts the following steps:

[0027] (1) Lime emulsification: Add 120kg of water to the 2000L batching tank made of glass steel, then start stirring, and slowly pour 300kg of quicklime into the batching tank until the feed liquid is evenly distributed;

[0028] (2) neutralization: gradually add the hydrobromic acid of 1620kg in batching tank, add in 45 minutes, after stirring again for 10 minutes, adjust the pH value to 6.5;

[0029] (3) Impurity treatment: 8kg of activated carbon, 12kg of activated clay and 5kg of 90-purpose chitosan leftovers were added to the above feed liquid and stirred and adsorbed for 80 minutes;

[0030] (4) Settling and filtering: after the feed liquid is put into the sedimentation tank for 5 hours, extract the above feed liquid into a filter press for pressure filtration, and collect the filtrate to the filtrate storage tank;

[0031] ...

Embodiment 3

[0034] The method utilizing hydrobromic acid of the present embodiment to prepare oilfield additive calcium bromide adopts the following steps:

[0035] (1) Lime emulsification: Add 150kg of water to the 2000L batching tank made of glass steel, then start stirring, and slowly pour 270kg of quicklime into the batching tank until the feed liquid is evenly distributed;

[0036] (2) neutralization: gradually add the hydrobromic acid of 1620kg in batching tank, add in 45 minutes, after stirring again for 10 minutes, adjust the pH value to 6.5;

[0037] (3) Impurity treatment: 7kg of activated carbon, 11kg of activated clay and 4kg of 80-purpose chitosan leftovers were added to the above feed liquid and stirred and adsorbed for 80 minutes;

[0038] Following steps are with embodiment 2, and gained liquid calcium bromide finished product, productive rate is 93.1%.

[0039] The calcium bromide product that the embodiment of the present invention gained is assayed, and the results are...

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Abstract

The invention relates to a calcium bromide preparation method, in particular to a method for preparing the oil field additive calcium bromide product by adopting the by-product, namely hydrobromic acid. The method mainly comprises the steps of: lime emulsifying, neutralisation, impurity disposal, settlement, filtering, vaporizing, condensing and discharging. The method has the beneficial effects that the preparation process is simple; the material is cheap and easy for obtaining, the manufacturing cost is reduced; the clarity of the prepared calcium bromide is high, the homogeneity of the solution is good, and the quality is up to the standard, thus having very good economic benefit.

Description

technical field [0001] The invention relates to a method for preparing calcium bromide, in particular to a method for preparing an oilfield additive calcium bromide product by using hydrobromic acid as a by-product. Background technique [0002] Calcium bromide is used as a medicine central nervous system depressant, and can also be used to manufacture ammonium bromide, photosensitive paper, fire extinguishing agent, refrigerant, etc. In recent years, it has also been widely used in the field of oil drilling, mainly used as offshore oil drilling completion fluid, cementing fluid, and workover fluid. [0003] The preparation method of calcium bromide mainly contains the following several kinds: ferrous bromide method, is to generate ferrous bromide by reacting bromine with iron filings, and then produces calcium bromide by metathesis reaction with lime; Ammonia, calcium oxide, and bromine are used as raw materials; three marble methods, adding hydrobromic acid to marble (CaC...

Claims

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Application Information

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IPC IPC(8): C01B9/04
Inventor 石勇刘英军刘兴祥袁江友
Owner 潍坊强源化工有限公司
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