What types of instruments are required for separating ethanol and water in a sieve plate distillation tower using an ethanol flowmeter? Answer:

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1. Anhydrous ethanol conveying speed

The conveying speed of anhydrous ethanol without pants should be accurately calculated according to the pipeline diameter, pump type, and process requirements. The flow rate range of conventional industrial pipelines should be controlled within 1-3m/s.

1. Calculation formula for core parameter conveying speed (flow rate): Q=π× (D/2) ㎡× v × 3600 (Q: flow rate m ³/h); D: Example: DN50 pipeline (inner diameter 53mm) with a flow rate of 2m/s, the flow rate is about 15.8m ³/h

2. Flow rate selection criteria • Economic flow rate

1.5-2.5m/s (balance energy consumption and pipe loss) • Safety flow rate: ≤ 3m/s (anti-static accumulation, grounding measures required) • Viscosity adaptation: Ethanol viscosity 1.2mPa · s (20 ℃), applicable universal flow rate range

3. Equipment selection reference | Pump type | Applicable flow range (m ³/h) | Pressure range (MPa)| Adaptation scenarios | | -------------------------------------- | --------------------------------------------------------------------------------------------------------------------- The pipeline needs to be grounded with static electricity, with a resistance of less than 10 Ω It is recommended to use a nitrogen sealed delivery system with an oxygen content of less than 5% Priority should be given to explosion-proof vortex street or elliptical gear flow meters (accuracy level 0.5) Set up flow rate interlock alarm, automatically cut off when exceeding the limit

V. Engineering specification basis - "Fire Protection Standard for Petrochemical Enterprise Design" (GB50160-2022): Flow rate limit for flammable liquid pipelines - "Code for Design of Chemical Pipelines" (HG/T20570-2013): Chapter 5 Fluid

2. What types of instruments are needed for separating ethanol and water in a sieve plate distillation tower? Answer

Stainless steel sieve plate tower. The tower body is equipped with a platinum resistance rotary flow meter, and the thermometer displays the reflux rotary flow meter and the distillation rotary flow meter. The tower kettle liquid level is automatically controlled by an automatic control system to prevent dry burning and ensure accurate discharge; Raw material preheater feed pump reflux pump raw material tank, tower top product tank, tower kettle product tank: ≥ 7L, stainless steel, automatic emptying upon receipt; Pipeline and valves: The pipeline is made of all stainless steel, including steel gate valves and copper ball valves; The inlet flow meter of the tower top condenser, the feed flow meter, the solenoid valve, the diaphragm box, the pressure gauge, and the temperature sensor are used. 3. What should I do if there is a problem with the activated carbon tetrachloride flow meter? First, classify and investigate the specific fault phenomena of the flow meter, and prioritize the compatibility of the medium, the working condition of the pipeline, and the hardware of the instrument. For operations involving toxic and hazardous chemicals such as carbon tetrachloride, it is necessary to we

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