Sodium nitrate single-effect evaporator

Sodium nitrate is an important inorganic chemical raw material, widely used in fertilizers, explosives, dyes, and glass manufacturing. In the production and recovery of sodium nitrate, evaporation and crystallization are key processes, directly affecting the purity and yield of the product. Our single-effect sodium nitrate evaporator is specifically designed for sodium nitrate solutions, providing an efficient, stable, and reliable evaporation and crystallization solution.

I. Characteristics of Sodium Nitrate Evaporation Process

The solubility of sodium nitrate exhibits a unique pattern with temperature, exhibiting high solubility within a specific temperature range. Addressing this characteristic, our single-effect evaporator employs a precise temperature control system to ensure the evaporation process operates within the optimal temperature range, guaranteeing both evaporation efficiency and the acquisition of high-purity sodium nitrate crystals.

In the field of waste acid treatment, sodium nitrate recovery is a crucial link in the comprehensive utilization of resources. After separating acetic acid and nitric acid from mixed acid using a single-effect forced circulation evaporator, the resulting sodium nitrate solution undergoes evaporation concentration, cooling crystallization, and centrifugation to obtain qualified sodium nitrate products. Our equipment is developed based on this mature process, ensuring industry-leading sodium nitrate recovery rates and purity.

II. Technical Advantages of Sodium Nitrate Single-Effect Evaporator

1. Forced Circulation Design: Utilizing a forced circulation evaporation process, the sodium nitrate solution is kept flowing at high speed within the heating tubes by a circulating pump. This results in a high heat transfer coefficient, preventing dry wall formation and making it particularly suitable for the evaporation and concentration of easily crystallizing materials like sodium nitrate.

2. Precise Temperature Control System: Equipped with a high-precision temperature control system, the evaporation temperature control accuracy reaches ±1℃, ensuring that sodium nitrate does not decompose due to excessive temperature while maintaining evaporation efficiency.

3. Continuous Crystallization Discharge: The equipment allows for continuous feeding and discharging, with automatic control of the liquid level and desired concentration. The concentrated sodium nitrate solution can be continuously transported to the crystallizer for cooling and crystallization, achieving continuous and automated production.

4. Optimized Material Selection: Based on the corrosiveness and temperature requirements of the sodium nitrate solution, parts in contact with the material can be made of 316L stainless steel, titanium, or other special alloys, ensuring the equipment's corrosion resistance and long service life.

III. Application Areas of Sodium Nitrate Single-Effect Evaporator

1. Waste Acid Treatment: Recovery of sodium nitrate after neutralization of nitric acid-acetic acid mixed acid.

2. Fertilizer Production: Concentration and crystallization of sodium nitrate solution.

3. Explosives Manufacturing: Preparation of high-purity sodium nitrate.

4. Glass Industry: Purification of sodium nitrate raw materials.

5. Dye Industry: Treatment and recovery of sodium nitrate-containing wastewater.

IV. Performance Parameters of Sodium Nitrate Single-Effect Evaporator

Processing Capacity: 1-15T/H (customizable)

Feed Concentration: 5-30%

Outlet Concentration: Saturated or Supersaturated

Evaporation Temperature: 60-120℃ (adjustable)

Steam Consumption: Approximately 0.3-0.4 tons of steam/ton of water (single-effect)

Material: 316L/Titanium/Special Alloy

V. Economic Benefit Analysis

Compared to traditional intermittent crystallization equipment, our continuous single-effect evaporator offers advantages such as high production efficiency, stable product quality, and low labor costs. The equipment operates stably and is easy to maintain, significantly reducing production costs for enterprises. Simultaneously, by recovering sodium nitrate, enterprises can obtain considerable economic benefits, achieving waste resource utilization.