CN102924258A - Method for producing calcium formate from sugar mill filter mud - Google Patents
Method for producing calcium formate from sugar mill filter mud Download PDFInfo
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- CN102924258A CN102924258A CN2012104262428A CN201210426242A CN102924258A CN 102924258 A CN102924258 A CN 102924258A CN 2012104262428 A CN2012104262428 A CN 2012104262428A CN 201210426242 A CN201210426242 A CN 201210426242A CN 102924258 A CN102924258 A CN 102924258A
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- filter mud
- formic acid
- calcium carbonate
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- sugar refinery
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Abstract
The invention relates to the field of industrial waste reutilization, and particularly discloses a method for producing calcium formate from sugar mill filter mud. The method comprises the followings steps: crushing the raw material sugar mill calcium carbonate filter mud, grinding, and adding 70 wt% formic acid solution into the filter mud while stirring until no bubble is generated, thereby completing the reaction; and regulating the pH value to 6-7 with 25 wt% lime cream, separating the reaction solution, and drying to obtain the product. The invention has the advantages of simple production technique, low cost, short technical process, low energy consumption and low investment; the formic acid and calcium carbonate filter mud can be directly used as the raw materials to synthesize the ideal calcium formate product by one step; and the purity and quality of the product satisfy the general demands.
Description
(1) technical field
The present invention relates to trade waste recycling field, particularly a kind of method of utilizing filter mud of sugar refinery to produce calcium formiate.
(2) background technology
Filter mud causes larger pollution as the main production waste of sugar enterprise to environment, has caused at present extensive concern both domestic and external, and the research of its recycling has also obtained significant progress.Use and it fully can be turned waste into wealth by industrial or agricultural, to development Sugarcane Industry recycling economy, promote the Sugarcane Industry Sustainable development, realize the maximization of Sugarcane Industry economic benefit and environmental benefit, the competitive power that improves Sugarcane Industry all has important practical significance.At present its application mainly contains the following aspects:
(1) produces the industrial raw material Wingdale; Calcine under the filter mud high temperature and obtain lime, except making building materials, at metallurgy, alkaline, there are a large amount of needs the aspects such as process hides papermaking glass calcium carbide;
(2) as the soil improving agent of acid soil etc.External most carbonatation process filter mud is as soil improving agent salty, acid soil, because the result of life-time service chemical fertilizer, it is salty that the soil souring becomes, and organic decline makes the soil fertility decline.Because the carbonatation process filter mud contains a large amount of calcium carbonate and a small amount of organic matter, as soil improving agent, can play increase the soil microorganisms breeding, chessom is replaced sodium ion, can be worked to transform salty field with calcium ion;
(3) utilize filter mud bio-fermentation agent fermentation filter mud to be shaped with the machine bio-fertilizer, carbonatation process filter mud alkalescence is large, calcium content is high, if make separately Term Fertilization, easily makes soil compaction.Guitang (Group) Co Ltd, Guangxi once tested with filter mud and the neutralization of zymamsis concentrated liquor, and admixed coal ash, sugarcane chaff etc., was modulated into neutral composite fertilizer, succeeded.Be used for growing cane, 30 tons of per hectare sugarcane field sealing fertilizers, sugarcane on average increases production 23%, obtains better effects;
(4) utilize filter mud to prepare biological fodder.Utilize filter mud to prepare biological fodder, it is raw material that its component is selected kitchen castoff, filter mud of sugar refinery.Add thermotolerant yeast through centrifuge dehydration, batching, inoculum size by 15%, the Technologies such as kill harmful microorganism, drying under the condition of thermophilic fermentation obtain the biological fodder of the kitchen castoff production of protein content more than 20%.This thing feed has the low characteristics of production cost, plays the double effects of the protection of the environment of exploiting natural resources.
Annual filter mud output reaches several ten million tons at present, is difficult to process, and piles up and takes up an area, and has wasted huge land resources.The wet filter mud that domestic crushing sugar cane sugaring produces, except doing industrial raw material, the making bio-fertilizer is effectively used, existing sugaring is to utilize raw sugar processing to purify to produce white sugar etc., the moisture of carbonatation process filter mud and organic nutriment do not reach the standard of bio-fertilizer, this just brings great difficulty for consuming in a large number filter muds, at present the domestic and international also method of comparatively imperfect this kind of disposal and utilization filter mud.
(3) summary of the invention
The present invention provides a kind of filter mud of sugar refinery that utilizes energy-saving and cost-reducing, that reduce cost to produce the method for calcium formiate in order to remedy the deficiencies in the prior art.
The present invention is achieved through the following technical solutions:
A kind of method of utilizing filter mud of sugar refinery to produce calcium formiate, take sugar refinery calcium carbonate filter mud as raw material, the filter mud fragmentation is fine ground, add weight concentration in the filter mud and be 70% formic acid solution, stirring is added into does not have Bubble formation then to react completely, then be that 25% milk of lime adjust pH is 6 ~ 7 with weight concentration, with reaction solution through separate, drying, obtain product.
In view of the calcium carbonate filter mud composition impurity that sugar refinery obtains less, do not contain objectionable impurities and heavy metal etc., and contain the organic nutrients such as sucrose, organic acid, amino acid, albumen, the calcium formiate of making can be used safely in feed, plant is expedited the emergence of additive, material of construction peptizer etc.The present invention improves the calcium formiate traditional technology, establishes in centrifugal, dry, packing and saves energy and reduce the cost, and reduces the production cost in the whole production process, with minimum investment, farthest the mud waste thing is utilized, and obtains comparatively ideal economic benefit.
More excellent scheme of the present invention is:
The weight proportion of calcium carbonate and formic acid is 1:1.01 in the described filter mud, and stirring velocity is 60r/min, and the reaction times is 70min.
Add milk of lime in the reaction solution and be placed on 80 ℃ the interior heating of water-bath, accelerate the adjusting of pH value, be convenient to simultaneously the carrying out of bottom drying.
The described centrifuge dehydration that is separated into 20min, drying means are 150 ℃ air stream drying.
The present invention utilizes the filter mud of sugar manufacturing industry to make calcium formiate, solid waste is rationally utilized, reduced enterprise in the economic pressures of processing on the filter mud problem, alleviated the environmental pollution that discharging mud causes to surrounding environment, to development Sugarcane Industry recycling economy, promote the Sugarcane Industry Sustainable development, realize the maximization of Sugarcane Industry economic benefit and environmental benefit, the competitive power that improves Sugarcane Industry all has important practical significance.
The technique of producing calcium formiate is generally neutralisation, namely utilize calcium carbonate and the formic acid reaction of occurring in nature, calcium formiate utilizes the calcium carbonate reaction in formic acid and the mud, filter mud is got utilization, also reduced traditional calcium formiate production method to the dependency that nature calcium carbonate uses, made the raw material of calcium formiate production that a new source arranged.
Utilize filter mud calcium carbonate to produce calcium formiate, be used for feed interpolation, material of construction rapid hardening, farm crop are expedited the emergence of the aspect that wide market potential is arranged, economic benefit and social benefit are considerable.
Production technique of the present invention is simple, and cost is low, and directly take formic acid, calcium carbonate filter mud as raw material, a step can synthesize desirable calcium formiate product, and technical process is short, and energy consumption is low, invests littlely, and purity and quality satisfy general needs.
(4) embodiment
Embodiment:
Main raw material and specification: formic acid content 88.0%, heavy metal (take Pb)≤0.0003% dilution is 70%, and is for subsequent use; Be equipped with the 25%(mass volume ratio) lime milk solution, for subsequent use; Filter mud calcium carbonate content 〉=70%, fineness 200 orders, moisture content≤18%, PH:7 ~ 8.
Filter mud bulk particle is pulverized, raw material filter mud Paris white after pulverizing is joined in the reactive tank, add again and be equipped with good formic acid solution, start stirring, at normal temperatures, drip in the reactive tank formic acid to pH be 4, continue again reaction 20min, to there not being Bubble formation, guarantee that the filter mud calcium carbonate reaction is complete.Then add 25% milk of lime and carry out the neutralization reaction of excessive formic acid, react to pH value be 7, through centrifugation, air stream drying, be packaged to be the calcium formiate product, Recycling Mother Solution is used.In reaction process by producing a large amount of bubble (CO
2) can lose a small amount of formic acid, need formic acid excessive in right amount.Determine suitable filter mud calcium carbonate and the material proportion of formic acid, filter mud calcium carbonate (75%): formic acid (70%)=1:1.01 by the exploration of producing.React stirring velocity 60r/min, reaction times 70min under the normal temperature.The filter mud calcium formiate that reaction generates is beige solid, and the filter cloth model that centrifuge dewatering is selected is terylene plain weave 260.Centrifuge dehydration time 20min, wet feed water content≤10%; Select aborning the tubular type pneumatic dryer, 150 ℃ of drying temperatures.Be packaged as 25kg woven bag inner lining plastic bag packing.
Amino acid nitrogen in the filter mud to the percentage of crude protein nitrogen is: Methionin accounts for 2.1%, and arginine accounts for 2.9%, L-glutamic acid accounts for 3.%, and therefore, filter mud is the good feed of the livestocks such as sucking pig and cow and bird.
Calcium formiate to preparation carries out Bioexperiment, has verified that this calcium formiate promotes growth that safety and efficacy is arranged to sucking pig, at the whole growth and development stage of chicken, can save food about 15%; Verified that this calcium formiate has the effect that expedites the emergence of farm crop; Increase the effect of the aspects such as viscosity of material accelerated solidification in building trade.
Claims (4)
1. method of utilizing filter mud of sugar refinery to produce calcium formiate, take sugar refinery calcium carbonate filter mud as raw material, the filter mud fragmentation is fine ground, add weight concentration in the filter mud and be 70% formic acid solution, stirring is added into does not have Bubble formation then to react completely, then be that 25% milk of lime adjust pH is 6 ~ 7 with weight concentration, with reaction solution through separate, drying, obtain product.
2. the method for utilizing filter mud of sugar refinery to produce calcium formiate according to claim 1, it is characterized in that: the weight proportion of calcium carbonate and formic acid is 1:1.01 in the described filter mud, and stirring velocity is 60r/min, and the reaction times is 70min.
3. the method for utilizing filter mud of sugar refinery to produce calcium formiate according to claim 1 is characterized in that: add milk of lime in the reaction solution and be placed on 80 ℃ the interior heating of water-bath.
4. the method for utilizing filter mud of sugar refinery to produce calcium formiate according to claim 1, it is characterized in that: the centrifuge dehydration of the described 20min of being separated into, drying means are 150 ℃ air stream drying.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012104262428A CN102924258A (en) | 2012-10-31 | 2012-10-31 | Method for producing calcium formate from sugar mill filter mud |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012104262428A CN102924258A (en) | 2012-10-31 | 2012-10-31 | Method for producing calcium formate from sugar mill filter mud |
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| CN102924258A true CN102924258A (en) | 2013-02-13 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2564856C1 (en) * | 2014-06-04 | 2015-10-10 | Закрытое акционерное общество "ЭКОС-1" | Method of producing calcium formate |
| CN109867388A (en) * | 2019-04-10 | 2019-06-11 | 新乡市锦源化工有限公司 | A kind of sewage water treatment method of paranitrochlorobenzene route synthesis para-ester |
| CN113480424A (en) * | 2021-06-18 | 2021-10-08 | 山东星光首创生物科技有限公司 | Method for producing calcium formate based on sugar mill filter mud |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1145883A (en) * | 1995-09-22 | 1997-03-26 | 张彦 | Lime producing process using sugar refinery filter mud |
| CN1472186A (en) * | 2003-06-30 | 2004-02-04 | 孙宝远 | Method for producing calcium formate |
-
2012
- 2012-10-31 CN CN2012104262428A patent/CN102924258A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1145883A (en) * | 1995-09-22 | 1997-03-26 | 张彦 | Lime producing process using sugar refinery filter mud |
| CN1472186A (en) * | 2003-06-30 | 2004-02-04 | 孙宝远 | Method for producing calcium formate |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2564856C1 (en) * | 2014-06-04 | 2015-10-10 | Закрытое акционерное общество "ЭКОС-1" | Method of producing calcium formate |
| CN109867388A (en) * | 2019-04-10 | 2019-06-11 | 新乡市锦源化工有限公司 | A kind of sewage water treatment method of paranitrochlorobenzene route synthesis para-ester |
| CN113480424A (en) * | 2021-06-18 | 2021-10-08 | 山东星光首创生物科技有限公司 | Method for producing calcium formate based on sugar mill filter mud |
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Application publication date: 20130213 |