CN104100959A - Energy-saving condensed water recycling device for edible oil engineering - Google Patents

Abstract

The invention discloses an energy-saving condensed water recycling device for edible oil engineering, and the device is used for heating system equipment, such as cleaning drying equipment, cold pressing equipment, conventional pressing equipment and refining equipment, for edible oil processing. Condensed water collection tanks are arranged in, so that the liquid collection tanks and pipeline equipment thereof are under constant pressure, and the condensed water is in no contact with air; due to the characteristic of a semi-floating ball type steam trap that the back pressure rate is higher than 80 percent, residual pressure recycling is realized, and the condensed water is conveyed into the liquid collection tanks; breather valves arranged on the liquid collection tanks can be automatically opened to release pressure to the outside; when the pressure in each tank is lower than a certain value, the corresponding breather valve is automatically closed; the discharged steam is exhausted through steam-water separators; the condensed water in a system is continuously injected to the liquid collection tanks through a water return device; high and low liquid level sensors are arranged on the liquid collection tanks and can control hot water pumps to work to convey the condensed water to a water softening tank of a boiler when liquid levels of liquids in the liquid collection tanks reach a certain height; a sewage drainage valve is arranged below each liquid collection tank, is used for checking whether sewage is stored in the tank and can be opened to drain the sewage.

Description

A kind of edible oil and fat engineering condensed water reclaims energy saver

Technical field:

Project of the present invention, be applicable to edible oil grease processing enterprise for drying, squeeze in advance, leaching, refining, winterization operation process condensed water reclaim energy-conservation technical field.

Background technology:

In order to make Oils and fats enterprise obtain better economic benefit, grease worker is on the one hand to scale and benefit with modern management is standby adds outside concern, simultaneously energy-conservationly in Dui You factory technique, equipment and production process carried out many-sided research.As: the utilization, the employing negative pressure evaporation that leach workshop evapo-separated machine indirect steam, refining plant is provided with vacuum drying oil with crude oil, bleached oil and treats bleached oil, deodorised oil and treat deodorization wet goods oil-oil heat exchanger on production line, make hot and cold logistics carry out heat exchange, the new-type deodorizing tower (soft tower) of " Alfa Laval " company development particularly in recent years, can steam saving 30%～40% than laminar tower, these measures all can make steam consumption decline to a great extent, and have reached energy-saving and cost-reducing object; But equipment cost is comparatively expensive, inferior flash-off steam be also can not be ignored energy-conservation by way of.Most domestic edible oil factory, generally adopts open type water collect tank to reclaim condensed water at present.This method is simple investment less.But have, can not make full use of heat energy, and return water temperature is low, oxygen content is high, can not be directly as the shortcoming of boiler feed water.Also have the oily factory of part to adopt enclosed water collect tank and hot water centrifugal pump group technology, reclaim condensed water, this method has been avoided the loss of open type water collect tank indirect steam, and good insulation has reduced radiation heat loss, but a new difficult problem has occurred again, hot water centrifugal pump easily produces cavitation, gas hammer phenomenon, and pump turns round and is easily damaged under bad working environments, increases maintenance cost; Though employing multi-stage condensing water pump can be carried higher temperature.Technique involved in the present invention, can meet above-mentioned requirements and deal with problems energy-conservation in the situation that.

Summary of the invention:

Condensed water of the present invention reclaims energy saver, has solved loss and enclosed water collect tank and the hot water centrifugal pump combination unit of open type water collect tank indirect steam, reclaims the problem that condensed water cost is high and processes expend is large.Native system squeezes the equipment such as heating system, refining heating system in cleaning drying system, cold press heating system, the tradition of the processing of edible oil grease; Condensation water collection tank is set, makes liquid collecting tank and pipe-line equipment thereof under constant pressure, condensate water is not contacted with air; Not absorbing airborne oxygen molecule can not be corroded system equipment.Condensed water adopts overbottom pressure to reclaim, and the characteristic of utilizing half float type steam trap rate of back pressure to be greater than 80%, sends condensate water into liquid collecting tank.Liquid collecting tank is non-pressure vessel, and when tank internal pressure is greater than 0.05MPa, the breather valve that liquid collecting tank is provided with is opened outside pressure release automatically; When tank internal pressure is lower than a timing, breather valve cuts out automatically, and the gas of discharge, arranges gas outward by steam-water separator; Condensate water in system continues to inject to liquid collecting tank by water recovery apparatus.Because liquid collecting tank is provided with two position sensor, when the liquid level in liquid collecting tank reaches certain altitude, two position sensor is controlled heat-exchanger pump work and is carried condensate water to the softened water tank of boiler; Liquid collecting tank below is provided with blowoff valve, checks in tank whether have sewage, opens sewage is discharged.

Accompanying drawing explanation:

Below in conjunction with drawings and Examples, a kind of condensed water is reclaimed to energy saving technique and further illustrate, Fig. 1 is that a kind of condensed water reclaims energy saver schematic diagram.

As shown in Figure 1: heat-exchanger pump 1, liquid collecting tank 2, A sound zone system firing equipment 3, filter 4, drying system heater 5, cold press system heating device 6, traditional squeezing system heater 7, degumming system heater 8, decolouring system heating device 9, deodorizing system heater 10, steam trap 11, B sound zone system firing equipment 12, No. two liquid collecting tanks 13, No. two heat-exchanger pumps 14.

The specific embodiment:

Principle of device of the present invention: the steam of giving drying system heater 5, cold press system heating device 6, traditional squeezing system heater 7, condensed condensate water, through being provided with filter 4 and steam trap 11, after removing gas and impurity, with the steam of giving A sound zone system firing equipment, condensed condensate water enters liquid collecting tank 2 No. one.The steam of degumming system heater 8, decolouring system heating device 9, deodorizing system heater 10, condensed condensate water, through being provided with filter 4 and steam trap 11, after removing gas and impurity, with the steam of giving B sound zone system firing equipment, condensed condensate water enters liquid collecting tank 13 No. two.From above-mentioned firing equipment vapour-liquid mixture out, enter liquid collecting tank 2, No. two liquid collecting tanks 13, liquid collecting tank is provided with exhalation valve and steam-water separator; Vapour-liquid mixture enters after liquid collecting tank, and fluid storage is in tank; Due to limited space in tank, water vapour is discharged from exhalation valve, the discharge of water vapour process exhalation valve enters steam-water separator and carries out vapour-liquid separation; Liquid enters in tank and stores, external of gas drain tank.Make collecting tank and pipe-line equipment thereof under constant pressure, condensate water will not contact by air, does not absorb airborne oxygen molecule; Can not make system equipment be corroded because contacting hot-air.Liquid collecting tank 2, No. two liquid collecting tanks 13 are provided with fluid level controller, when the condensate water liquid level in tank reach a certain height, fluid level controller just outputs signal to heat-exchanger pump 1, No. two heat-exchanger pumps 14, makes its work condensate water in liquid collecting tank is transported to the softened water tank of boiler; Repeat to heat into steam and then circulate, thereby reach energy-conservation effect.

Claims (5)

1. edible oil and fat engineering condensed water reclaims an energy saver, and condensation water collection tank is set, and makes collecting tank and pipe-line equipment thereof under constant pressure, and condensate water does not contact with air; The characteristic of utilizing half float type steam trap rate of back pressure to be greater than 80%, carries out hydraulic recovery; The breather valve that liquid collecting tank is provided with is opened outside pressure release automatically, and the gas of discharge, by steam-water separator, is arranged gas outward, and fluid storage is in tank, and when tank internal pressure is lower than a timing, breather valve cuts out automatically; Liquid collecting tank is provided with two position sensor, and when pot liquid liquid level arrives certain altitude, sensor is controlled heat-exchanger pump and carried condensate water to the softened water tank of boiler; Liquid collecting tank below is provided with blowoff valve, checks the sewage having in tank; Opening valve discharges sewage.

2. a kind of edible oil and fat engineering condensed water according to claim 1 reclaims energy saver, its feature: the steam of drying system heater (5), cold press system heating device (6), traditional squeezing system heater (7), condensed condensate water, through being provided with filter (4) and steam trap (11), after removing gas and impurity, with the steam of giving A sound zone system firing equipment, condensed condensate water enters a liquid collecting tank (2).

3. a kind of edible oil and fat engineering condensed water according to claim 1 reclaims energy saver, its feature: the steam of degumming system heater (8), decolouring system heating device (9), deodorizing system heater (10), condensed condensate water, through being provided with filter (4) and steam trap (11), after removing gas and impurity, with the steam of giving B sound zone system firing equipment, condensed condensate water enters No. two liquid collecting tanks (13).

4. a kind of edible oil and fat engineering condensed water according to claim 1 reclaims energy saver, its feature: liquid collecting tank is provided with exhalation valve and steam-water separator; Vapour-liquid mixture enters after liquid collecting tank, and fluid storage is in tank; Water vapour is discharged from exhalation valve, and water vapour carries out vapour-liquid separation through steam-water separator; Liquid enters in tank and stores, and gas is discharged; Make collecting tank and pipe-line equipment thereof under constant pressure, condensate water will not contact by air, and system equipment can be corroded.

5. a kind of edible oil and fat engineering condensed water according to claim 1 reclaims energy saver, its feature a: liquid collecting tank (2), No. two liquid collecting tanks (13) are provided with fluid level controller, when the condensate water liquid level in tank reach a certain height, fluid level controller just outputs signal to a heat-exchanger pump (1), No. two heat-exchanger pumps (14), the softened water tank that condensate water in liquid collecting tank is transported to boiler repeats to heat into steam, then circulation.