Biodiesel Production Line factory Basis the State Council is standing on April 28, 2015 the plan that 7 ministries and commissions release the conference and country jointly, car of 5 quality standard uses countrywide limits executive country the time of steam derv came ahead of schedule on January 1, 2018 by what decide formerly on January 1, 2017, before this, since January 1, 2016, 11 provinces city has implemented the eastpart part 5 cars use the country standard of steam derv quality.
Opposite Yu Guosan, country 4 standards, 5 standards car uses the country steam derv ” the car uses diesel oil (V) (GB-2013) ” (next weighing, country 5 derv standard) and common derv (” common derv ” (GB252-2015) ) the content of sulfur and nitrogen is reduced considerably, country of 3 standards derv contain sulfur content upper limit to be 350ppm (milligram / litre) , country IV (4) of standard steam derv contain sulfur content upper limit to be 50ppm, country of derv of V standard steam contain sulfur content upper limit to be 10ppm. The method that uses hydrogenation normally reduces the sulfur content in derv, hydrogenation can mix sulfur and nitrogen with vulcanization hydrogen ammoniac form is taken from inside oil, but because organic matter content reduces the polarity of sulfur and nitrogen,make at the same time the lubricity of derv is reduced considerably.
Accordingly, in the country 3, country 4, country in 5 derv standard, join lubricity an index, the requirement is corrective the diameter that grind mark (60 degrees) do not be more than 460 micron, have a test according to SH/T0765. , rely on the corporeal composition of the derv itself of hydrogenation only, lubricity short of asks this, derv must be added to fight in the cent of derv heat up in a steamer of hydrogenation grind an agent to undertake mediating, just can make the lubricity of hydrogenation derv achieves a requirement.
For this, petrifaction established industry standard in ” derv fights the technology that wear a lotion to ask ” (Q/SHCG57-2014) (next weighing, in petrifaction industry standard) . Include fatty acid derv to fight requirement of the technology that wear a lotion and experiment method, fatty acid ester derv to fight requirement of the technology that wear a lotion and experiment method among them, both all asks, be in in WS1.4 of blank derv lubricity above of 460-520 micron, 521-600 micron, 601-700 micron, 700 micron, add quantity upper limit to be in respectively 80, 150, 200, 300 milligram / kilogram at the same time, WS1.4 of lubricity of the derv that add an agent is not more than 420 micron (the abbreviate that WS1.4 is English Corrected Wear Scar Diameter, chinese is: The corrective diameter that grind spot, it is with vapor 1.4KPa namely fiducial, the computation of the diameter that grind spot after the course is corrective is worth) . Country 3, country 4 with the country there is content of ester of a fatty acid armour in 5 derv standard (bulk mark) do not be more than 1% , have a test according to GB/T, add the lubricity that main effect expresses ester of fatty acid armour to raise derv now, of course, because the 16 alkyl cost of ester of fatty acid armour is higher, helpful also to raising the 16 alkyl of hydrogenation derv to be worth. #p#·ÖÒ³±êÌâ#e#
Basis ” diesel engine fuel moves operable biology diesel oil (BD100) ” (GB/T -2015) (next weighing, GB of biology derv BD100) the definition about biology derv, biology derv is by the fatty acid sheet that use vegetable oil or discards grease and mellow reaction are made alkyl ester, the most typical for ester of fatty acid armour (FAME) , express with BD100. Operable biology diesel oil is moved in the diesel engine fuel of this standard (BD100) the technology asks and ask in experimental method, ester content (quality mark) do not be less than 96.5% , have a test according to NB/SH/T0831.
Comparative country is 5 derv standard, medium petrifaction industry standard and GB of biology derv BD100 are knowable, what the country adds in 5 derv standard is biology derv. Actually, country 5 derv standard and (" common derv " (GB252-2015) ) “ fatty acid points out in explaining about the remarks of ester of fatty acid armour the requirement ” that armour ester should satisfy GB/T, the GB of BD100 of GB/T biology derv of here. Also can explain from this respect, country 5 derv standard and (” common derv ” (GB252-2015) ) in those who add is biology derv.
What need points out is, the country is 5 derv standard, medium the specific requirement of afore-mentioned industry standards and level of state of biology derv BD100 to biology derv has petrifaction distinction. In the country 3, country 4, country in 5 derv standard, just make clear join ester of fatty acid armour, have a test according to GB/T, ester of “ fatty acid armour should satisfy the requirement ” of GB/T, that is to say, want to achieve GB/T requirement only, can add. Acid value of petrifaction industry standard is not more than 2mg KOH/g in, condensation point not prep above – 16 degrees, the flash point that close a mouth not under 160 degrees, viscosity of density, motion is report numerical value, azotic content not prep above 200mg/kg, sulfur content not prep above 100mg/kg, metal (sodium + potassium + magnesian + calcic + iron + zinc) not prep above 50mg/kg, phosphorous content not prep above 15mg/kg, boracic content not prep above 15mg/kg, silicon content not prep above 15mg/kg, chloric quantity not prep above 15mg/kg, content of saturated fatty acid (quality mark) do not be more than 2.5% , moisture (bulk mark) do not be more than trace; Mechanical impurity is not had. Compare with photograph of GB of biology derv BD100, the flash point that close a mouth is higher than biology derv (biology derv closes a flash point not under 101 degrees) , sulfur content is higher than biology derv (biology derv sulfur content is not more than 50mg/kg and 10mg/kg respectively) , acid value is higher than biology derv (biology derv acid value not. Overall and character, outside comparing Gao Zhi of biology derv requirement except the flash point that close a mouth and condensation point, index of other of petrifaction industry standard compares GB of biology derv BD100 in the requirement wants low.
It is reported, because fatty acid derv fights the price that wear a lotion inferior, in current hydrogenation derv application is compared much. This corporeal equipment company from state-owned oil tycoon and invite public bidding of past years of each branch refinery can clear proof. The fatty acid of high acid value acidity that fights the meeting that wear a lotion to add diesel oil and corrode, fatty acid fight grind an agent to be able to produce reaction with the alkalescent and dispersive agent in derv, carboxyl replaces the hydrophobic group group of dispersive agent, make gel kind material, jam screen pack; Fatty acid and alkalescent and dispersive agent are counteracted, make the deposit such as the fatty acid calcium with very low solubility, fatty acid magnesium, come true hard dispersive with lubricant synchronism; Fatty acid affects the 16 alkyl such as ester of laborious of nitric acid different easily to be worth the function that improves an agent, cause lubricant with anti-knock properties hard give attention to two or morethings. In the meantime, fatty acid corrodes aluminium and zinc easily, cause zine plate of gasoline tank plating easily leak and leakage of aluminous qualitative filter or jam atomizer. Large lorry appears to cheer in applying actually not sex of free, motivation is poor, bring about truckman of a few areas to like to use a country 3, country 4 derv, create a state promotion of 5 standards derv is difficult. #p#·ÖÒ³±êÌâ#e#
What need makes clear is, country 5 derv standard and (” common derv ” (GB252-2015) ) fight those who wear a lotion to add quantity and quality to do not have specific and specific target to fatty acid derv, but the acidity of derv asks with KOH plan is not more than 7(mg/100ml) , this is fatty acid from logic model fight those who wear a lotion to add obligate the space that acidity changes. Of course, the additive that oil tastes concoctive need is a lot of more phyletic, like antiknock, antioxidant, metal passivator, anti-icing agent, antistatic agent, fight grind improver of antirust, fluidity, 16 alkyl value improver, kosher dispersive agent, support combustion additive of agent, much effect, these additive also were not in country 5 derv standard and (” common derv ” (GB252-2015) ) reflect.
With fatty acid model fight grind an agent to not was in country 5 derv standard and (” common derv ” (GB252-2015) ) give reflect different is, the 5th chapter of 5 derv standard, the 7th chapter mixes the country the 9th chapter is mandatory, the others is those who recommend a gender; ” common derv ” (GB252-2015) the 4th chapter of the standard, the 6th chapter is with the 8th chapter mandatory, the others is those who recommend a gender, content of ester of “ fatty acid armour (bulk mark) do not be more than 1% , have a test according to GB/T. ” belongs to a country 5 derv standard and (" common derv " (GB252-2015) ) mandatory clause.
Biology derv industry is led via the State Council such as Qing Dynasty of Zhu Zuo ji, Li Lan, Wu Bangguo, Wen Jiabao from 2002 agree to begin to develop, bring into 15 ” of “ to plan 935 ” of “ to plan, develop through 14 years, already formed an industry. Biology derv industry is exclusive one did not take a country one minute money finance fills continuously and development rises but industry of second birth energy, it changed the world but the development history that second birth the sources of energy develops initial stage to must rely on governmental subsidy, the Chinese characteristic that walked out of a support to discard grease and seed of feral oiliness tree serve as raw material develops way.
Turn concern issue of the industry about biology derv industry and stone oilstone, enterprise of state-owned oil petrifaction and the biology derv property that civilian battalion takes principal part stick to his argument, unable to decide which is right, argumentative prolonged, and even resort law court, the focus that argues at present is, the biology derv condensation point that gains by deserted grease is high, mix with groovy derv, may make elevatory, fluidity differs the condensation point of the derv after mixing, increase the risk that fuel pump mesh and derv filter jam.
Actually, because fatty acid and zinc, aluminium reacts generated salt is caused,the main reason that jam is be in the majority. In the meantime, our country has developed a condensation point to be – 30 degrees, – 40 degrees, – 50 degrees biology derv, such, biology derv according to the country 5 derv standard, according to condensation point (include cold filter to nod) taste oil cent to be condensation point not prep above 5 degrees, 0 degrees, – 10 degrees, – 20 degrees, – 35 degrees, – wait for 6 grade 50 degrees, establish independence, when whole oily strain interconnected system has been been not far. #p#·ÖÒ³±êÌâ#e#
Before this, country 5 derv standard and (" common derv " (GB252-2015) ) in content of ester of “ fatty acid armour (bulk mark) do not be more than 1% , undertake checking ” according to GB/T, the shirt-sleeve development that is biology derv industry and oil petrifaction industry provided the basis of standard field, this also is both collaboration is optimal cut a point.
(author: Ji Xing College of department Nanjing agriculture is postdoctoral)