Each drying equipment has a specific scope of application, each material can find several kinds of drying equipment that can meet the basic requirements, but only one is suitable. If the model is not selected properly, the user not only has to bear the unnecessary one-time high procurement cost, but also has to pay the heavy price of the whole service life, such as low efficiency, high energy consumption, high operating cost, poor product quality, and even the equipment can not operate normally.

以下是干燥設備選型的原則，很難說(shuō)哪一項或哪幾項是重要的，理想的選型必須根據自己的條件有所側重，有時(shí)折中是必要的。

The following is the principle of drying equipment selection, it is difficult to say which one or which one is important, the ideal selection must be based on their own conditions, sometimes compromise is necessary.

1.適用性——干燥設備必須適合特定物料，滿(mǎn)足物料干燥的基本使用要求，包括物料的良好處理(進(jìn)料、輸送、流化、分散、傳熱、出料等)。)，并滿(mǎn)足處理量、脫水量和產(chǎn)品質(zhì)量的基本要求。

1. Applicability - the drying equipment must be suitable for specific materials and meet the basic requirements for drying materials, including good treatment of materials (feeding, conveying, fluidization, dispersion, heat transfer, discharging, etc.), And meet the basic requirements of processing capacity, dehydration capacity and product quality.

2.干燥速率高——就干燥速率而言，物料在對流干燥時(shí)高度分散在熱空氣中，臨界含水率低，干燥速度快，也是對流干燥。不同的干燥方法有不同的臨界含水率和不同的干燥速率。

2. High drying rate - in terms of drying rate, materials are highly dispersed in hot air during convection drying, with low critical moisture content and fast drying speed, which is also convection drying. Different drying methods have different critical moisture content and different drying rate.

3.耗能低——不同干燥方法耗能指標不同。

3. Low energy consumption - different drying methods have different energy consumption indexes.

4.節約投資——完成同樣功能的干燥設備，有時(shí)成本差異大，應選擇低者。

4. Saving investment: for drying equipment with the same function, sometimes the cost difference is large, so the lower one should be selected.

5.運行成本低——設備折舊、能源消耗、人工費、維護費、零部件費等運行費用盡量便宜。

5. Low operation cost: the operation cost such as equipment depreciation, energy consumption, labor cost, maintenance cost and parts cost should be as cheap as possible.

6.優(yōu)先選用結構簡(jiǎn)單、備件供應充足、可靠性高、使用壽命長(cháng)的干燥設備。

6. The drying equipment with simple structure, sufficient supply of spare parts, high reliability and long service life is preferred.

7.符合環(huán)境保護要求，工作條件好，安全性高。

7. Meet the requirements of environmental protection, good working conditions and high safety.

8.選型前能做出物料的干燥實(shí)驗，深入了解類(lèi)似物料已經(jīng)使用的干燥設備（優(yōu)缺點(diǎn)），往往對恰當選型有幫助。

8. It is helpful to make drying experiments of materials before type selection, and deeply understand the drying equipment (advantages and disadvantages) used for similar materials.