Pressurized vapor cycle liquid distillation

A liquid distillation system comprising:

• a) an input for receiving untreated liquid;
• b) an evaporative condenser coupled to the input for transforming the liquid to vapor and for transforming compressed vapor into a distilled liquid product, wherein the evaporative condenser comprising a plurality of parallel core evaporator tubes, each tube having a first open end in communication with a sump and a second open end in communication with a head chamber;
• c) a head chamber for collecting vapor from the evaporator;
• d) a vapor pump for compressing the vapor, the vapor pump in communication with the evaporative condenser and comprising:
• 1. an internal drive shaft;
• and
• 2. an eccentric motor, and
• e) a multi-unit filter having at least two filter units in the input for filtering liquid before it is received by the evaporator.

A liquid distillation system comprising:

• a) an input for receiving untreated liquid;
• b) an evaporative condenser coupled to the input for transforming the liquid to vapor and for transforming compressed vapor into a distilled liquid product;
• c) a head chamber for collecting vapor from the evaporator;
• d) a vapor pump for compressing the vapor, the vapor pump in communication with the evaporative condenser and comprising:
• 1. an internal drive shaft;
• and
• 2. an eccentric motor;
• e) a multi-unit filter having at least two filter units in the input for filtering liquid before it is received by the evaporator;
• f) a diverter whereby at least one filter unit is back-washed by a blowdown stream diverted from the head chamber;
• and
• g) a regulator coupled to the diverter for providing the minimum flow rate blowdown stream from the head chamber necessary to back-wash the at least one filter unit.

A liquid distillation system comprising:

• a) an input for receiving untreated liquid;
• b) an evaporative condenser coupled to the input for transforming the liquid to vapor and for transforming compressed vapor into a distilled liquid product;
• c) a head chamber for collecting vapor from the evaporator;
• d) a vapor pump for compressing the vapor, the vapor pump in communication with the evaporative condenser and comprising:
• 1. an internal drive shaft;
• and
• 2. an eccentric motor;
• e) a multi-unit flip-filter having at least two filter units in the input for filtering liquid before it is received by the evaporator;
• and
• f) a diverter whereby at least one filter unit is back-washed by a blowdown stream diverted from the head chamber.

A liquid distillation system comprising:

• a) an input for receiving untreated liquid;
• b) an evaporative condenser coupled to the input for transforming the liquid to vapor and for transforming compressed vapor into a distilled liquid product;
• c) a head chamber for collecting vapor from the evaporator;
• d) a vapor pump for compressing the vapor, the vapor pump in communication with the evaporative condenser and comprising:
• 1. an internal drive shaft;
• and
• 2. an eccentric motor;
• e) a multi-unit flip-filter having at least two filter units in the input for filtering liquid before it is received by the evaporator;
• f) a diverter whereby at least one filter unit is back-washed by a blowdown stream diverted from the head chamber;
• and
• g) a mechanism for periodically rotating the flip-filter at appropriate intervals to prevent fouling.

A liquid distillation system comprising:

• a) an input for receiving untreated liquid;
• b) an evaporative condenser coupled to the input for transforming the liquid to vapor and for transforming compressed vapor into a distilled liquid product;
• c) a head chamber for collecting vapor from the evaporator;
• d) a vapor pump for compressing the vapor, the vapor pump in communication with the evaporative condenser and comprising:
• 1. an internal drive shaft;
• and
• 2. an eccentric motor;
• e) a multi-unit filter having at least two filter units in the input for filtering liquid before it is received by the evaporator;
• and
• f) a heat exchanger for receiving input liquid such that heat from at least one of a plurality of sources is added to the input liquid, wherein the at least one of a plurality of heat sources is selected from the group consisting of a product stream, a blowdown stream, system waste heat, vapor pump waste heat, motor waste heat, exhaust heat from a power source, and an external heat source.

A method for distilling in a distillation system a liquid comprising:

• a. evaporating untreated input liquid in an evaporative condenser to form a vapor to fill a head chamber;
• b. collecting the vapor from the evaporative condenser in the head chamber;
• c. compressing the vapor by rotating the vapor in a vapor pump having at least one intake for axial feeding and using a continuous internal drive shaft and eccentric rotor with a fully rotatable housing supported by rotatable housing shaft to produce compressed vapor;
• d. condensing the compressed vapor in the evaporative condenser having an internal pressure into a distilled liquid product;
• e. measuring total dissolved solid in a blowdown stream from vaporized untreated liquid;
• and
• f. adjusting a source feed rate of the untreated liquid if the total dissolved solid is above a prescribed level.