Description
Key words: sweet potato fermentation liquid waste drier, potato residue liquid spray dryer, potato residue liquid spray dryer, spray dryer, waste liquid dryer
Classification: waste water treatment engineering
Case summary: Changzhou Hao Mei drying Engineering Co., Ltd. supplies sweet potato fermentation liquor waste water and potato residue liquid spray dryer. At present, our company has made good achievements in the treatment of industrial salt waste liquid, sweet potato fermentation liquid wastewater, potato residue waste liquid, fermentation wastewater, sweet potato starch waste liquid and other wastewater treatment, realizing the waste water resource utilization.
Changzhou Hao Mei drying Engineering Co., Ltd. supplies sweet potato fermentation liquor waste water, potato residue liquid spray dryer.
In the process of evening twilight starch production, the main sources of wastewater are germ dehydration, fiber dehydration, gluten concentration dehydration and starch dehydration. Sweet potato starch wastewater is rich in organic matter, which is generally difficult to handle by ordinary physical and chemical methods. Changzhou Hao Mei drying Engineering Co., Ltd. recommends drying and dewatering with spray dryer.
Project design conditions:
Material name: sweet potato fermentation broth wastewater
Water evaporation capacity: 1300kgh2o / h
Dry product output: 200kg / h
Moisture content of wet material: 88%
Moisture content of dry material: ≤ 10%
Equipment name: special centrifugal spray dryer for potato residue
Equipment type: LPG-1300 high speed centrifugal spray dryer.
Atomization mode: rotary atomization, ^ high speed: 18000 R / min
Summary of the special spray drying machine for sweet potato fermentation liquid waste and potato residue liquid waste:
Spray drying machine is open type circulation, and flow type, centrifugal atomization. The air in the drying medium is filtered through a primary and medium efficiency air filter, and then pumped by a blower according to the operation instructions, then heated by a heater, and enters the spray drying main tower through the hot air distributor of the high efficiency filter. According to the operation instructions, the liquid material passes through the peristaltic pump and enters the high-speed rotating centrifugal nozzle. Under the action of centrifugal force, it is dispersed into small droplets. In the spray drying main tower, small droplets are fully contacted with the hot air, and after being heat exchanged along their specific paths, they are dried into products, then separated by cyclone separator, solid materials are collected, and the gas medium is filtered and then discharged. The whole spray system is easy to clean and has no dead angle, which is in line with GMP requirements.
Description of main process systems:
1. Feeding system: it is composed of feed pump, relevant valve group and pipeline.
2. Atomization system: it is composed of high-speed centrifugal atomizer, cooler and circulating oil pump.
The atomizer is a vertical two-stage motor, which increases speed through two pairs of gears, and the linear speed of atomization disk is more than 120m / s. The motor drives the transmission shaft through the coupling, the transmission shaft drives the intermediate shaft through the gear, and the intermediate shaft drives the main shaft through the gear. The atomization disk is installed at the lower end of the main shaft, so the atomization disk can quickly turn the slurry into a continuous and uniform mist, expand the specific surface area of the particles and form a good heat exchange with the clean hot air, so that the water can be evaporated and vaporized instantly by the induced air The fan is drawn out and emptied.
Classification: waste water treatment engineering
Case summary: Changzhou Hao Mei drying Engineering Co., Ltd. supplies sweet potato fermentation liquor waste water and potato residue liquid spray dryer. At present, our company has made good achievements in the treatment of industrial salt waste liquid, sweet potato fermentation liquid wastewater, potato residue waste liquid, fermentation wastewater, sweet potato starch waste liquid and other wastewater treatment, realizing the waste water resource utilization.
Changzhou Hao Mei drying Engineering Co., Ltd. supplies sweet potato fermentation liquor waste water, potato residue liquid spray dryer.
In the process of evening twilight starch production, the main sources of wastewater are germ dehydration, fiber dehydration, gluten concentration dehydration and starch dehydration. Sweet potato starch wastewater is rich in organic matter, which is generally difficult to handle by ordinary physical and chemical methods. Changzhou Hao Mei drying Engineering Co., Ltd. recommends drying and dewatering with spray dryer.
Project design conditions:
Material name: sweet potato fermentation broth wastewater
Water evaporation capacity: 1300kgh2o / h
Dry product output: 200kg / h
Moisture content of wet material: 88%
Moisture content of dry material: ≤ 10%
Equipment name: special centrifugal spray dryer for potato residue
Equipment type: LPG-1300 high speed centrifugal spray dryer.
Atomization mode: rotary atomization, ^ high speed: 18000 R / min
Summary of the special spray drying machine for sweet potato fermentation liquid waste and potato residue liquid waste:
Spray drying machine is open type circulation, and flow type, centrifugal atomization. The air in the drying medium is filtered through a primary and medium efficiency air filter, and then pumped by a blower according to the operation instructions, then heated by a heater, and enters the spray drying main tower through the hot air distributor of the high efficiency filter. According to the operation instructions, the liquid material passes through the peristaltic pump and enters the high-speed rotating centrifugal nozzle. Under the action of centrifugal force, it is dispersed into small droplets. In the spray drying main tower, small droplets are fully contacted with the hot air, and after being heat exchanged along their specific paths, they are dried into products, then separated by cyclone separator, solid materials are collected, and the gas medium is filtered and then discharged. The whole spray system is easy to clean and has no dead angle, which is in line with GMP requirements.
Description of main process systems:
1. Feeding system: it is composed of feed pump, relevant valve group and pipeline.
2. Atomization system: it is composed of high-speed centrifugal atomizer, cooler and circulating oil pump.
The atomizer is a vertical two-stage motor, which increases speed through two pairs of gears, and the linear speed of atomization disk is more than 120m / s. The motor drives the transmission shaft through the coupling, the transmission shaft drives the intermediate shaft through the gear, and the intermediate shaft drives the main shaft through the gear. The atomization disk is installed at the lower end of the main shaft, so the atomization disk can quickly turn the slurry into a continuous and uniform mist, expand the specific surface area of the particles and form a good heat exchange with the clean hot air, so that the water can be evaporated and vaporized instantly by the induced air The fan is drawn out and emptied.
The main bearing of atomizer is imported SKF Bearing. The transmission shaft and intermediate shaft bearing is the advanced radial thrust ball bearing in Harbin. The main shaft, intermediate shaft and transmission shaft are made of high-quality alloy steel through forging, heat treatment and grinding. The gear is also made of high-quality alloy steel through forging heat treatment, and then grinded by gear grinder.
3. Heating air system: composed of air filter, forced draft fan, steam radiator, electric heating and hot air pipe.
4. Drying system: it is composed of hot air distributor, main drying tower, insulation layer, cleaning observation door and lighting system in the tower.
The hot air is sent into the tower through the hot air distributor on the top of the tower, and contacts with the small droplets atomized by the atomizer. Under the action of high temperature air flow, the water content rapidly evaporates, and the product in the droplet is dried into solid substance, and the product is completely qualified.
The hot air distributor can adjust the hot air cut in angle and rotation speed according to the characteristics of materials, control the residence time of materials in the tower, and adjust the angle of 15 ~ 45 degrees. The tower body is equipped with cleaning door, top lighting and overall thermal insulation.
In order to facilitate blanking, air vibrator is installed at the cone part.
5. Product collection and tail gas treatment system: composed of cyclone separator, discharge valve, induced draft fan and pipeline.
6. Control system: the whole set of equipment adopts centralized control, including relevant signal acquisition and automatic control system.
7. Special design for wall sticking
Wall sticking: the material is adsorbed on the wall of drying chamber, and the material properties are changed after staying for a long time. Caking falls into the air duct and blocks the air duct, which makes the equipment unable to operate continuously. The mixture of small pieces of material and powdery material causes the product moisture to exceed the standard.
There are two types of wall sticking
1、 The dry material is adsorbed in the drying chamber wall. In this case, the design of the tower failed and the atomization radius and the diameter of the tower did not match. This situation has never appeared in the practical application of our company.
2、 The dry powder is adsorbed on the drying chamber wall. The dry powder and the inner wall of the tower can not be avoided to contact, for some materials with poor fluidity, it is easy to adsorb on the inner wall of the tower. Our solutions are as follows:
(1) Special design of hot air distributor, reasonable air distribution.
(2) It is made according to the European Union standard. It can improve the surface finish of the inner wall and make the material difficult to absorb.
(3) : the equipment is specially designed in the process of making, which is convenient for users to do anti-static treatment.
(4) A pneumatic hammer is designed at the appropriate position of the tower body to knock the tower wall periodically. Reduce adsorption.
(5) : the angle of the cone becomes smaller, which increases the flow on the cone.
The wet dust collector is used for tail gas treatment, and the defoamer is specially designed to reduce the water loss in the process of dust removal, and further reduce the product cost if necessary. Purified water can be used as circulating water. When the material is collected to a certain concentration, it will return to the concentration process, and there will be almost no material loss.
Centrifugal spray drying is a widely applied technology in direct liquid forming process. It is suitable for producing powdery products from solution, emulsion, suspension emulsion and paste liquid raw material. Therefore, when the waste liquid needs to be directly dried into powder, the centrifugal spray drying is the ideal drying process. Our company has achieved good results in the treatment of industrial salt waste water, sweet potato fermentation liquor waste water, potato residue waste liquid, fermentation wastewater, sweet potato starch waste liquid and so on, so as to realize the resource utilization of waste water.
