国产精品亚洲一区二区三区,高H禁伦餐桌上的肉伦NP影片 ,日本JAPANESE丰满少妇,男女啪啪做爰高潮全过有多少姿势

歡迎來(lái)到冀群(江蘇)儀器有限公司網(wǎng)站!
咨詢(xún)熱線(xiàn)

13236572657

當(dāng)前位置:首頁(yè)  >  技術(shù)文章  >  英國(guó) Labplant 噴霧干燥儀在奶粉中的應(yīng)用

英國(guó) Labplant 噴霧干燥儀在奶粉中的應(yīng)用

更新時(shí)間:2021-11-30  |  點(diǎn)擊率:1661

英國(guó) Labplant 噴霧干燥儀在奶粉中的應(yīng)用

 

Labplant spray dryer tests

 

 

The milk used was reconstituted in the following way:

 

200g  milk powder

 

1.7L of tap water

 

giving 2L of milk with a measured density of 1.045 at 21’C.

 

We used a fixed flow, whatever the experiment ; pump flow set at 5, corresponding to

13.5mL/min.

 

Varying the injection temperature of the product

 

We did a first test with an injection temperature of 130’C and then a second test at 140’C.

 We saw that spray drying was achieved, apparently, comfortably at these two 

temperatures.Effectively no liquid ran along the walls of the main spray chamber, even at

130’C. This meant that we could work at 140’C or 130’C given the stipulated flow.

In theory it is preferable to work at 140’C, because the higher the temperature the better

the yield. We will try to prove this through our experiments.

 

Varying the compressed air ratio / feed flow

 

 

We worked with a flow set at 5 (13.5mL/min) and compressed air set at 3 bars

(constant air inlet valve opening).

 

In theory to increase the size of the agglomerate, it is necessary to favour the agglomeration

 mechanism over the drying process. One of the possible means is to decrease the spraying

 rate. In the case of this equipment, to decrease the spraying rate you can either decrease the

flow of compressed air through the injection nozzle (while keeping a constant pressure) or

you can decrease the pressure of the compressed air (while keeping a constant flow).

 

Therefore we tried two tests with constant air and liquid flows, varying the pressure from 2

to 3 bars.We observed the look of the powders we obtained ; it was difficult to decide just

with the naked eye, an additional granulometric(?) study would be necessary, but it did seem

that the powder obtained with 3 bars of pressure was effectively finer than that obtained with

 2 bars.

 

Research into the effective operational limits of the spray dryer

 

 

We retained the same solution of reconstituted milk.

 

At a given flow and pressure of air, we increased the flow of liquid from level 5

(13.5mL/min) to level 10 (28.8mL/min). We very quickly saw that the formation of the

spray in the atomisation tube was not good : in effect the quantity of liquid going through

the tube was too much and could not be vaporised on exiting the tube. This was why we had

some liquid that ran out of the tube, ran along the walls of the spray chamber, of the fan

chamber (cyclone?) and even in the recuperation chamber. Under these conditions the yield

of finished product would be bad.

 

QUANTITATIVE STUDY

 

 

The experiments carried out and the experiment details are given below.

 

Experiment 1 : starting from 100g/L of reconstituted milk

 

Amount of milk powder

 200g


Amount of water

  1700g


Volume of milk

2L


Density of milk

      1.045g/mL


Humidity of milk

        89.47 % mas


Injection temp (??)

  130’C


Injection flow

       13.5mL/min


Working time

  40 min


Compressed air pressure

 3 bars


Humidity of labo

     21.8 %HR

   6g vapour / m3 air

Ventilator flow

   70 m3/h


Gas exit temp

77’C


Air exit humidity

    18.8 %HR

    21.3g vapour / m3 air

Bottle size

339g


Bottle + wet milk

391.9


Bottle + dry milk

           390


 

From the experiment details we calculated the following:

 

humidity of the milk : 100 x water mass (water mass + powder mass)

 

numerical application : % humidity of the milk = 100 x 1700/(1700+200) = approx 89.5%

the mass of the wet milk we collected = 391.9 – 339 = 52.9g

 

the mass of the dry matter we collected = 390 – 339 = 51g

 

humidity of the solid = 100 x (52.9 – 51)/52.9 = approx 3.6%

 

Materials ‘balance sheet’ of the dry milk over the life of the experiment:

 

at the start : dry matter is the result of the solution to be tested

 

at the exit : dry matter of the solid that was obtained

 

Numerical application

 

a) at the start : 13.5mL/min x 1.045 g/mL x 40 min x (100-89.47)/100 = approx 59.4g

b) at the exit : 51g

 

c) solid yield = 100 x 51 / 59.4 = approx 85.9%

 

Materials ‘balance sheet’ of the water over the life of the experiment

 

b) at the start : (13.5mL/min x 1.045 g/mL x 40 min x 89.47 / 100) + 70 m3/h x 6 g/m3 x40/60 = 784.8 approx of water

 

c) at the exit : (52.9g x 3.6 /100) + (70m3/h x 21.3 g/m3 x 40/60) = approx 995.9

 

d) water yield = 100 x 995.9 / 784.8 = approx 127%

 


扒开腿狂躁女人爽出白浆| 去男朋友宿舍被室友4P| 99久久无码一区人妻A片蜜桃| 精品人人搡人妻人人玩A片| 免费网禁拗女资源网视频| 亚洲人精品亚洲人成在线| 精品无码一区二区三区| 免费不卡在线观看AV| 99久久人人爽亚洲精品美女| 无码粉嫩小泬无套在线观看| 99国产精品偷窥熟女精品视频| 疼~好疼~进不去了| 欧洲专线一区二区三区| 色婷婷7777免费视频在线观看| 3D动漫精品啪啪一区二区| 日本做受高潮好舒服视频| 国产精品扒开腿做爽爽爽A片软件 特级做A爰片毛片免费看 | 公主从小被吃催乳药H| 他揉捏她两乳不停呻吟| 人妻少妇精品无码专区动漫| 国产精品乱码一区二三区| 久久久久久久综合狠狠综合| 日日AV夜夜添久久奶无码| 可以玩的18款禁用游戏手游| 女人被弄到高潮叫床免费视频| 大学情侣360水滴摄像头| 欧美做受又硬又粗又大视频| 国产JIZZ中国JIZZ免费看| 小鲜肉男男GAY做受XXX网站| 未满十八18禁止免费无码网站| 再深点灬舒服灬太大了网站| 最近中文在线字幕在线观看| 少妇与大狼拘作爱| 狂野欧美性猛交免费视频| 成人午夜福利视频| 久久久久久亚洲AV无码专区| 国产精品99久久久久久人| 一个人在线观看的WWW免费视频| 亚洲AV永久无码精品网址| 亚洲综合伊人久久综合| 寡妇两腿间黑黑的毛|