CN101735886B - Novel process for refining oil-tea camellia seed crude oil - Google Patents
Novel process for refining oil-tea camellia seed crude oil Download PDFInfo
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- CN101735886B CN101735886B CN2009102267533A CN200910226753A CN101735886B CN 101735886 B CN101735886 B CN 101735886B CN 2009102267533 A CN2009102267533 A CN 2009102267533A CN 200910226753 A CN200910226753 A CN 200910226753A CN 101735886 B CN101735886 B CN 101735886B
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Abstract
The invention discloses a process for refining oil-tea camellia seed crude oil, which belongs to the technical field of grease refining in the fine and further processing of farm and sideline products. A process flow comprises the following steps: filtering the oil-tea camellia seed crude oil to eliminate impurities; performing a first low temperature acid reaction; performing low temperature alkali refining; removing soap; performing water washing after first acid adding; performing second water washing; and de-coloring and deodorizing the obtained product to obtain first-level oil-tea camellia seed oil. The novel process is characterized by improving the oil obtaining rate of refining, lowering production cost, improving product quality and stability and the like, and is used for refining the oil-tea camellia seed crude oil and refining rap oil, peanut oil and other vegetable oil.
Description
Technical field
The present invention relates to the fats and Oils Refining Technology field in the agricultural byproducts intensive processing, particularly a kind of refining oil-tea camellia seed crude oil technology.
Background technology
Tea seed mainly originates from China's ALFISOL IN CENTRAL, and wherein Hunan Province's output occupies first of the whole nation.For a long time, place of production resident is based on edible hair tea-seed oil.Because contain plurality of impurities in the hair tea-seed oil, and color is darker, flavour is relatively poor, so product specification is lower.In recent years, the tea seed processing industry has adopted " crude oil-come unstuck-depickling fully-once washing-decolouring-deodorization " this conventional method of refining, and quality product is taken on a new look to some extent.But because camellia seed oil inherent singularity, thereby conventional method of refining can not the effective elimination soluble impurity; Existing in addition refining unit ability is on the low side, and equipment integral is relatively backward, so adopt the production cost of ordinary method refining oil tea-seed oil higher, oil yield is on the low side, and quality product can not effectively improve always.
Summary of the invention
At the deficiencies in the prior art, technical problem to be solved by this invention provides a kind ofly can improve the refining oil yield, reduce production costs, improve the quality of products and the refining oil-tea camellia seed crude oil technology of stability.
The technical solution used in the present invention is a kind of refining oil-tea camellia seed crude oil technology of invention, its technical process comprises following operation: oil-tea camellia seed crude oil filters impurity elimination, low temperature acid-respons for the first time, the low temperature alkali refining takes off soap, adds acid back, washing for the first time, washing for the second time, decolouring, deodorization makes the one-level camellia seed oil;
Described first time low temperature acid-respons operation, be to allow the oil-tea camellia seed crude oil that filters after the impurity elimination 85% the phosphoric acid 0.12-0.15% according to the oil-tea camellia seed crude oil gross weight be mixed by mixing device, enter the acid-respons jar after the mixing, the control acid-respons time is at 80-100min;
Described low temperature alkali refining operation is that the oil-tea camellia seed crude oil behind the first time acid-respons is heated to 50-60 ℃, and adding concentration is the NaOH solution of 15 ° of B é, and fully slow stir about 20min behind the mixing becomes mixing oil;
The described soap operation of taking off is with the reacted mixing oil of process low temperature alkali refining, is heated rapidly to 85-90 ℃, enters to take off and carries out centrifugation in the soap whizzer, isolates the soap stock in the mixing oil, becomes and takes off soap oil;
Add acid back, washing step the described first time, be after taking off soap, 50% citric acid that first adding accounts for oil-tea camellia seed crude oil gross weight 0.01-0.015% enters and takes off in the soap oil, add then that to account for oil-tea camellia seed crude oil gross weight 6-8%, temperature be 90-95 ℃ hot water, enter thorough mixing in the static mixer together, enter again in the washing whizzer and carry out coming unstuck the first time;
Described second time washing step, be taking off in the soap oil after washing altogether through first hypo acid, water, add the temperature account for tea seed crude oil gross weight 5-7% and be 90-95 ℃ hot water, enter thorough mixing in the static mixer together, enter again in the washing whizzer and carry out coming unstuck the second time.
Refining oil-tea camellia seed crude oil technology of the present invention, because the low temperature acid-respons operation first time that is adopted, temperature of reaction is lower, reaction times is also between mixed short the mixing of length of the prior art, the enough acid-respons time is provided, but make phosphatide in the crude oil be made the transition and be the wetting ability hydrated phospholipid, tea saponin is made the transition is hydroaropic substance, thereby, in low temperature alkali refining operation thereafter, can effective elimination phosphatide and tea saponin, and reduced the side reaction generation of NaOH and neutral oil effectively, guaranteed degumming effect and production efficiency thereafter.In addition, owing to removed the part acid value, produced the soap stock of sufficient quantity, adsorbed in the oil partial pigment and removed the part oil soluble impurity in low temperature alkali refining operation.Simultaneously, owing to adopted secondary water washing and added citric acid technology, the wherein contained soluble impurity of flush away improves the quality of products and stability largely.
Therefore, the present invention compared with prior art, its outstanding technique effect has:
(1), can solve the difficult problem of conventional method of refining color reversion, impurity such as the colloid in the effective elimination camellia seed oil, tea saponin;
(2), alkali refining removes partial fatty acid, both reached the effect that makes pigment in the soap stock active adsorption oil, solve whizzer again and removed the production efficiency difficult problem on the low side that a large amount of soap stock causes, and in later process, remove abundant fatty acid, both improved the byproduct income, reduce production cost, improved quality product, improved the refining oil yield again.
(3), the present invention on the common process basis, as long as seldom investing aspect the transformation of section of tubing, just can realize.
The one-level oil quality contrast that refining oil-tea camellia seed crude oil technology of the present invention and conventional refinery practice are produced is as shown in table 1 below.
Table 1 refining oil-tea camellia seed crude oil technology of the present invention and conventional refinery practice one-level oil quality contrast table
Embodiment
Below in conjunction with embodiment, the present invention is further illustrated.
Implementing major equipment of the present invention comprises: acid-respons still, alkali reaction still, cutter formula mixer, static mixer, whizzer, impeller pump etc.
Embodiment one
The concrete technical process of present embodiment is as follows:
One will treat that the purified oil-tea camellia seed crude oil filters impurity elimination, make that the oil-tea camellia seed crude oil quality after the removal of impurities is: acid value 3.5, phospholipids content 1.05%, moisture 0.2%, impurity 0.18%.
Its two, oil-tea camellia seed crude oil after removal of impurities adds 85% phosphoric acid that accounts for oil-tea camellia seed crude oil gross weight 0.12%, enters the acid-respons jar, reaction times 80min after mixing through blade mixer;
Its three, will be heated to 50 ℃ through the oil-tea camellia seed crude oil of acid-respons, the NaOH solution centrifugal that adds 15 ° of B é again mixes that (add alkali number and calculate according to formula: 1 * 0.713 * Q/1000, Q is oil-tea camellia seed crude oil flow T/h.), fully behind the mixing, slowly stir, carry out low temperature alkali refining reaction times 20min after, become mixing oil;
Its four, will be heated rapidly to 85 ℃ through the reacted mixing oil of low temperature alkali refining, take off and carry out centrifugation in the soap whizzer, isolate the soap stock in the mixing oil, become and take off soap oil;
Its five, in taking off soap oil, add 50% citric acid account for oil-tea camellia seed crude oil gross weight 0.01%, add 8% 90 ℃ hot water then, enter thorough mixing in the static mixer together, enter again in first washing whizzer and dewater, realize coming unstuck for the first time;
Its six, through after coming unstuck for the first time, add 90 ℃ hot water accounting for oil-tea camellia seed crude oil gross weight 5% again, enter thorough mixing in the static mixer together, enter again in second washing whizzer and dewater, realize coming unstuck for the second time;
Its seven, behind the secondary degumming, through super-dry, more routinely refinery practice decolour, deodorization, can obtain refining one-level camellia seed oil.
Embodiment two
The concrete technical process of present embodiment is as follows:
One will treat that the purified oil-tea camellia seed crude oil filters impurity elimination, make that the oil-tea camellia seed crude oil quality after the removal of impurities is: acid value 3.5, phospholipids content 1.05%, moisture 0.2%, impurity 0.18%.
Its two, oil-tea camellia seed crude oil after removal of impurities adds 85% phosphoric acid that accounts for oil-tea camellia seed crude oil gross weight 0.13%, enters the acid-respons jar, reaction times 90min after mixing through blade mixer;
Its three, will be heated to 55 ℃ through the oil-tea camellia seed crude oil of acid-respons, the NaOH solution centrifugal that adds 15 ° of B é again mixes that (add alkali number and calculate according to formula: 1 * 0.713 * Q/1000, Q is oil-tea camellia seed crude oil flow T/h.), fully behind the mixing, slowly stir, carry out low temperature alkali refining reaction times 20min after, become mixing oil;
Its four, will be heated rapidly to 88 ℃ through the reacted mixing oil of low temperature alkali refining, take off and carry out centrifugation in the soap whizzer, isolate the soap stock in the mixing oil, become and take off soap oil;
Its five, in taking off soap oil, add 50% citric acid account for oil-tea camellia seed crude oil gross weight 0.012%, add 7% 92 ℃ hot water then, enter thorough mixing in the static mixer together, enter again in first washing whizzer and dewater, realize coming unstuck for the first time;
Its six, through after coming unstuck for the first time, add 92 ℃ hot water accounting for oil-tea camellia seed crude oil gross weight 6% again, enter thorough mixing in the static mixer together, enter again in second washing whizzer and dewater, realize coming unstuck for the second time;
Its seven, behind the secondary degumming, through super-dry, more routinely refinery practice decolour, deodorization, can obtain refining one-level camellia seed oil.
Embodiment three
The concrete technical process of present embodiment is as follows:
One will treat that the purified oil-tea camellia seed crude oil filters impurity elimination, make that the oil-tea camellia seed crude oil quality after the removal of impurities is: acid value 3.5, phospholipids content 1.05%, moisture 0.2%, impurity 0.18%.
Its two, oil-tea camellia seed crude oil after removal of impurities adds 85% phosphoric acid that accounts for oil-tea camellia seed crude oil gross weight 0.15%, enters the acid-respons jar, reaction times 100min after mixing through blade mixer;
Its three, will be heated to 60 ℃ through the oil-tea camellia seed crude oil of acid-respons, the NaOH solution centrifugal that adds 15 ° of B é again mixes that (add alkali number and calculate according to formula: 1 * 0.713 * Q/1000, Q is oil-tea camellia seed crude oil flow T/h.), fully behind the mixing, slowly stir, carry out low temperature alkali refining reaction times 20min after, become mixing oil;
Its four, will be heated rapidly to 90 ℃ through the reacted mixing oil of low temperature alkali refining, take off and carry out centrifugation in the soap whizzer, isolate the soap stock in the mixing oil, become and take off soap oil;
Its five, in taking off soap oil, add 50% citric acid account for oil-tea camellia seed crude oil gross weight 0.015%, add 6% 95 ℃ hot water then, enter thorough mixing in the static mixer together, enter again in first washing whizzer and dewater, realize coming unstuck for the first time;
Its six, through after coming unstuck for the first time, add 95 ℃ hot water accounting for oil-tea camellia seed crude oil gross weight 7% again, enter thorough mixing in the static mixer together, enter again in second washing whizzer and dewater, realize coming unstuck for the second time;
Its seven, behind the secondary degumming, through super-dry, more routinely refinery practice decolour, deodorization, can obtain refining one-level camellia seed oil.
Refining oil-tea camellia seed crude oil technology of the present invention both can be used for the refining oil-tea camellia seed crude oil, also can be used for refined rapeseed oil, peanut oil and other vegetables oil.
Claims (1)
1. refining oil-tea camellia seed crude oil technology is characterized in that technical process comprises following operation: oil-tea camellia seed crude oil filters impurity elimination, low temperature acid-respons for the first time, low temperature alkali refining, take off soap, add acid back, washing for the first time, for the second time washing, decolouring, deodorization makes the one-level camellia seed oil;
Described first time low temperature acid-respons operation, be to allow the oil-tea camellia seed crude oil that filters after the impurity elimination 85% the phosphoric acid 0.12-0.15% according to the oil-tea camellia seed crude oil gross weight be mixed by mixing device, enter the acid-respons jar after the mixing, the control acid-respons time is at 80-100min;
Described low temperature alkali refining operation is that the oil-tea camellia seed crude oil behind the first time acid-respons is heated to 50-60 ℃, and adding concentration is the NaOH solution of 15 ° of B é, and fully slow stir about 20min behind the mixing becomes mixing oil; Add alkali number and calculate according to formula: 1 * 0.713 * Q/1000, Q is oil-tea camellia seed crude oil flow T/h;
The described soap operation of taking off is with the reacted mixing oil of process low temperature alkali refining, is heated rapidly to 85-90 ℃, enters to take off and carries out centrifugation in the soap whizzer, isolates the soap stock in the mixing oil, becomes and takes off soap oil;
Add acid back, washing step the described first time, be after taking off soap, 50% citric acid that first adding accounts for oil-tea camellia seed crude oil gross weight 0.01-0.015% enters and takes off in the soap oil, add then that to account for oil-tea camellia seed crude oil gross weight 6-8%, temperature be 90-95 ℃ hot water, enter thorough mixing in the static mixer together, enter again in the washing whizzer and carry out coming unstuck the first time;
Described second time washing step, be taking off in the soap oil after washing altogether through first hypo acid, water, add the temperature account for tea seed crude oil gross weight 5-7% and be 90-95 ℃ hot water, enter thorough mixing in the static mixer together, enter again in the washing whizzer and carry out coming unstuck the second time.
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Effective date of registration: 20160722 Address after: 426100 Yongzhou City, Hunan province Qiyang county Wu Xi Zhen Qi Li Xin Cun, Hunan Jin Hao tea oil industry Limited by Share Ltd Patentee after: HUNAN XINJINHAO TEA OIL CO., LTD. Address before: 426100 Qiyang County of Hunan province Wuxi Wuxi Industrial Village Patentee before: Hunan Jinhao Camellia Oil Co., Ltd. |