Indirect steam scouring method

Abstract

The invention discloses a secondary steam purification method, and relates to the process of preparing salt by bittern, in particular to the purification method of the secondary steam in the process of preparing the salt by the bittern. The invention has the technical proposal that the secondary steam is purified and neutralized, and undergoes the steam-liquid separation, then, the purified secondary steam is obtained after the cleaning working procedure, and the pH value of the purified secondary steam is 7 to 8.3. The purified secondary steam obtained after the processing of the invention can be separated from the contained acid and alkali materials therein, so as to protect equipment; at the same time, the obtained steam can be directly applied in production or used for other purposes because the pH valve reaches 7 to 8.3 and the impurity content is smaller than 5 ppm, thereby preventing the environmental pollution caused by the discharging of the secondary steam and saving energy.

Description

Technical field

[0001] The invention relates to a brine salt production process, in particular to a method for purifying secondary steam in the brine salt production process. Background technique

[0002] my country has a long coastline, and the salt industry has a long history in our country. In the traditional salt industry, the drying method has always been the most important method of sea salt production. It is to extract sea salt after evaporating and concentrating it. The bromine, potassium, magnesium and other substances contained in it are further concentrated and evaporated. With the development of technology and technology, the emerging brine evaporation salt production process has been gradually popularized. The purified brine enters the multi-effect evaporation device or evaporation concentrator, and the water is evaporated to obtain the finished salt. A typical multi-effect evaporation system includes 3-5 forced circulation evaporation equipment connected toget...

Examples

Embodiment Construction

[0017] As can be seen from the accompanying drawings, the present invention is to purify, neutralize, and vapor-liquid separate the secondary steam produced by multi-effect evaporation of brine, and then obtain pure secondary steam with a pH value of 7-8.3 through a cleaning process. , neutralization, vapor-liquid separation, and cleaning procedures include a foam catcher, a neutralization tank, a separator, and a water washing tower. The specific method includes: the secondary steam enters the foam catcher, and the brine droplets entrained in the secondary steam are mixed with phase separation, the purified secondary steam enters the neutralization tank, and the separated brine droplets are discharged through the brine discharge port set at the bottom of the mist catcher;

[0018] The secondary steam that enters the neutralization tank meets the lye that is sprayed into the alkali-adding port provided by the neutralization tank, neutralizes the secondary steam, and then enters...

Technical field

[0001] The invention relates to a brine salt production process, in particular to a method for purifying secondary steam in the brine salt production process. Background technique

[0002] my country has a long coastline, and the salt industry has a long history in our country. In the traditional salt industry, the drying method has always been the most important method of sea salt production. It is to extract sea salt after evaporating and concentrating it. The bromine, potassium, magnesium and other substances contained in it are further concentrated and evaporated. With the development of technology and technology, the emerging brine evaporation salt production process has been gradually popularized. The purified brine enters the multi-effect evaporation device or evaporation concentrator, and the water is evaporated to obtain the finished salt. A typical multi-effect evaporation system includes 3-5 forced circulation evaporation equipment connected toget...

Examples

Embodiment Construction

[0017] As can be seen from the accompanying drawings, the present invention is to purify, neutralize, and vapor-liquid separate the secondary steam produced by multi-effect evaporation of brine, and then obtain pure secondary steam with a pH value of 7-8.3 through a cleaning process. , neutralization, vapor-liquid separation, and cleaning procedures include a foam catcher, a neutralization tank, a separator, and a water washing tower. The specific method includes: the secondary steam enters the foam catcher, and the brine droplets entrained in the secondary steam are mixed with phase separation, the purified secondary steam enters the neutralization tank, and the separated brine droplets are discharged through the brine discharge port set at the bottom of the mist catcher;

[0018] The secondary steam that enters the neutralization tank meets the lye that is sprayed into the alkali-adding port provided by the neutralization tank, neutralizes the secondary steam, and then enters...

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