氫氧化鉀是一種強(qiáng)堿，一般經(jīng)常用作化工原料，但是其在使用的時(shí)候主要產(chǎn)品的主含量達(dá)不到要求的話，那么也會(huì)影響后續(xù)的使用效果，那當(dāng)產(chǎn)品的主含量低的時(shí)候應(yīng)該怎么解決呢，下面我們一起來看一下吧。

Potassium hydroxide is a kind of strong alkali, which is often used as chemical raw materials. However, if the main content of the main product fails to meet the requirements when it is used, the subsequent use effect will also be affected. How to solve the problem when the main content of the product is low? Let's take a look.

主含量是指成品中KOH的質(zhì)量分?jǐn)?shù)，這是確定產(chǎn)品質(zhì)量主要的參數(shù)之一，一般要求含量大于90%。這個(gè)過程中控制好堿液的溫度是關(guān)鍵。1.148%堿液濃度在經(jīng)過一效、二效蒸發(fā)器蒸發(fā)只有，堿液濃度需要達(dá)到或大于48%，為后面進(jìn)行的工序質(zhì)量合格做好準(zhǔn)備。這個(gè)過程主要是通過蒸氣冷凝產(chǎn)生的熱量用來蒸發(fā)堿液中的水分從而提高濃度，因此需要能夠保證蒸氣的壓力和溫度達(dá)到相應(yīng)的要求：

The main content refers to the mass fraction of KOH in the finished product, which is one of the main parameters to determine the product quality. Generally, the content is required to be greater than 90%. In this process, the key is to control the temperature of lye. 1.148% alkali liquor concentration shall reach or be greater than 48% when it is evaporated through the primary and secondary effect evaporators, so as to prepare for the qualification of the following processes. This process mainly uses the heat generated by steam condensation to evaporate the water in the lye so as to increase the concentration. Therefore, it is necessary to ensure that the steam pressure and temperature meet the corresponding requirements:

真空狀態(tài)下可以降低堿液沸點(diǎn)，所以為了節(jié)約能源和提升效率，蒸發(fā)器中的真空度要盡量保持一個(gè)比較高的狀態(tài)。二效蒸發(fā)器堿液真空度處于0.085~0.094MPa，溫度在75~85攝氏度之間，效果是比較好的。

The boiling point of alkali liquor can be reduced under vacuum, so in order to save energy and improve efficiency, the vacuum degree in the evaporator should be kept as high as possible. The vacuum degree of alkali liquor in the two effect evaporator is 0.085~0.094MPa, and the temperature is 75~85 ℃. The effect is good.

1、提高高壓蒸氣的壓力和溫度

1. Increase the pressure and temperature of high-pressure steam

升膜蒸發(fā)器以高壓蒸氣為加熱介質(zhì)，可以繼續(xù)提高堿液的濃度，氫氧化鉀堿液溫度一般在190~210攝氏度之間比較適宜。

The rising film evaporator uses high pressure steam as the heating medium, which can continue to increase the concentration of alkali liquor. The temperature of potassium hydroxide alkali liquor is generally between 190~210 ℃.

2、氫氣燃燒爐及熔鹽系統(tǒng)

2. Hydrogen combustion furnace and molten salt system

濃縮制片過程需要使用熔融鹽HTS為加熱介質(zhì)，而加熱BTS是使用氫氣燃燒爐來提供熱源的。燃燒爐提供的熱量要保證穩(wěn)定，這樣才能確保熔鹽溫度和流量的穩(wěn)定，才能生成足夠量的穩(wěn)定熱量來加熱堿液，使經(jīng)過濃縮器后的堿液溫度達(dá)到標(biāo)準(zhǔn)要求，一般在380-400攝氏度之間。

Molten salt HTS is used as the heating medium in the process of concentration and production, while hydrogen combustion furnace is used to provide heat source for BTS heating. The heat provided by the combustion furnace must be stable, so as to ensure the stability of the molten salt temperature and flow, generate enough stable heat to heat the alkali liquor, and make the alkali liquor temperature after passing the concentrator meet the standard requirements, generally between 380-400 ℃.

3、保持系統(tǒng)密閉

3. Keep the system closed

為了避免堿液溫度降低和發(fā)生潮解，降低其中的K0H含量，堿液在從濃縮器片堿機(jī)的流動(dòng)過程中需要盡量保持密閉狀態(tài)，避免和空氣進(jìn)行接觸。

In order to avoid the temperature reduction and deliquescence of the alkali liquor and reduce the K0H content in it, the alkali liquor shall be kept as closed as possible during the flow from the concentrator to the flaker to avoid contact with the air.

上面介紹的四種就是氫氧化鉀主含量低的解決方法，通過上面的方法處理之后可以有效的提高產(chǎn)品的純度。更多相關(guān)內(nèi)容就來我們網(wǎng)站http://m.wenping365.com咨詢了解吧！

The four solutions described above are to solve the problem of low main content of potassium hydroxide, which can effectively improve the purity of the product. More relevant content will come to our website http://m.wenping365.com Ask and understand!