CN104692578A

CN104692578A - Waste liquid treatment process for producing palm oil

Info

Publication number: CN104692578A
Application number: CN201510077275.XA
Authority: CN
Inventors: 何文元
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-02-13
Filing date: 2015-02-13
Publication date: 2015-06-10
Anticipated expiration: 2035-02-13
Also published as: CN104692578B

Abstract

The invention discloses a waste liquid treatment process for producing palm oil. The process comprises the following steps: separating oil-containing wastewater into concentrated liquid heavy oil, filtrate and dregs by using a ceramic inorganic membrane and pipe combined pipe part; treating the waste liquid which contains 98% of wastewater and is generated in the last step in a multi-effect falling film evaporation separating device; recycling the generated high-temperature condensate water and sending to a stewing kettle for stewing hot water, wherein the condensate water is approximate to distilled water; the rest dregs are pumped and dried by a rotary scraper evaporator pump and are used as a fertilizer and a feed. By the overall evaporation, separation and condensation treatment process, the oil-containing waste liquid is fully utilized and recycled; the original process takes up a large space and adopts more than ten large-area deep recesses for real-time precipitation treatment, and sewage and smell which are not qualified and cannot be discharged are generated; the process disclosed by the invention has the advantages of realizing the aims of environmental protection and zero emission, greatly shortening the production period, saving lots of production places and engineering devices, improving the work environment, alleviating the labor intensity, obtaining quite high economic benefits and social benefits and having a high practical value.

Description

Produce palmitic waste liquid treatment process

Technical field

The present invention relates to a kind for the treatment of process, particularly to the waste liquid produced after fresh palm fruit oil expression, carry out the palmitic waste liquid treatment process of production of environmental protection treatment.

Background technology

Existing plam oil is produced: squeeze after first being boiled in distilling kettle by fresh plam oil fruit grain, after squeezing, the crude oil of layering above collects and delivers to refining oil factory and make plam oil, remaining oily waste is separated into again oil, oily(waste)water, slag through whizzer, oil is recovered, remaining oily(waste)water, slag do aging precipitation process through big area dell, the raw material of general industry oil and fat product made by isolated oil again, and slag is used as fertilizer.But can discharge a large amount of hydrogen sulfide in dell during reason herein, destroy and pollute ambient air and environment, isolated water is still not up to standard, can't at will discharge, and there is much thorny insurmountable difficult problems again simultaneously.

Number of patent application 200610018746.0 " producing palmitic method and suite of equipment from fresh palm fibre fruit ", provide only a kind of method and apparatus being effectively separated fresh palm fibre fruit really, benevolence, core and making full use of.

The patent No. 201320785742.0 " palm oil waste water pretreatment unit ", the bulky device be only made up of pipe, filtering net, precipitation plate, separate tank, settling tank, air flotation pool etc. provided carries out effective separating treatment to oily(waste)water.

Summary of the invention

Technical problem to be solved by this invention is: produce palmitic waste liquid treatment process, the oil-containing waste liquid not only making oil expression produce afterwards is fully used and is also recycled, both waste had been avoided to the pollution of air, water, environment, destruction, reach the target of energy-conserving and environment-protective, there is again very large economic benefit, social benefit.

The present invention's adopted technical scheme that solves the problem is: produce palmitic waste liquid treatment process, comprise 1, boiled in distilling kettle by fresh palm fruit grain and squeeze in squeezing machine, through oil in squeezing machine, water, after slag is separated, crude oil in upper strata takes rear remaining a small amount of oil away, oily(waste)water, the waste liquid of slag, respectively under horizontal three-phase screw rod whizzer and butterfly centrifugal machine high speed rotating, allow oil, oily(waste)water, slag is separated, and flow out from the outlet whizzer different positions, isolated heavy oil liquid is recovered in squeezing machine, slag makes fertilizer, also comprise 2, the waste liquid stayed by last process---mainly oily(waste)water is delivered in more than one ceramic inorganic film pipe combined pipe fitting, each arm in ceramic inorganic film pipe combined pipe fitting is separated, the penetrating fluid first leaked out from fenestra and filtered liquid are water, remaining oil becomes the passage of concentrated solution in the middle of arm to flow out recovery, on center-aisle inwall, precipitation is slagged tap, cleaned out outside arm by buck again and make feed, fertilizer, 3, by the waste liquid in last process, be mainly organic waste water and account for more than 97%, deliver in multiple-effect falling film evaporating separation device and evaporate, be separated, the high-temperature condensation water recovery generated after condensation cycle process is delivered to distilling kettle and is used as the high-temperature water of boiling plam oil fruit needed for grain, slag makes feed, fertilizer, whole closed circulation treating processes is zero release.

Compared with prior art, the invention has the advantages that: present treatment technique uses ceramic inorganic film pipe and multiple-effect falling film evaporation separating technology, replace that original to take the useful space very large, aging precipitation process is done with big area more than 10 dell pond, pond, hole inwall also needs painted plastic, the technique that cost of manufacture is high.And evaporate isolating waste water not up to standard through evaporation equipment, be cooled to water of condensation again and make its one-tenth up to standard be similar to distilled water, at this moment the temperature of water of condensation is very up to 69 DEG C, directly be recovered in initial distilling kettle, supply raw water and the heat energy use of palm fruit grain is boiled in heating, water of condensation is recycled, the intermediate product produced in whole production process is all fully used, to recycle and for zero release, isolated waste particle contain abundant carotene, except making feed, outside fertilizer, also can be used as the medicine of Cardiovarscular or the starting material of healthcare products.

Peel before also palm fruit being extracted oil in addition the fruit stone, shell, shell string, branch etc. that abandon all centralized collection get up to do the fuel needed for evaporation process, also needed to spend a large amount of human and material resources, financial resources, time and the quantity of process is many, volume large, take the waste of many contaminate environment again all fully utilizes when refuse treatment by former.

Whole production technique is all carried out in the pipeline closed, whole raw material and intermediate product are all fully used, are recycled, therefore there is not the pollution to empty G&W, environment, destruction problem, really achieve the target of energy-saving environment-friendly zero-emission, both palmitic output had been added, save again and eliminate a large amount of industrial lands and design library part editor and reuse, improve Working environment, labour intensity.This technique simple process speed is fast, the production cycle is shortened greatly, substantially increases production efficiency, achieve good economic benefit and social benefit.

Accompanying drawing explanation

Fig. 1, waste liquid treatment process figure.

Embodiment

Below in conjunction with accompanying drawing, embodiments of the invention are described in further detail.

Plam oil milling process has been that prior art is summarized as follows:

1, adopt fresh palm fruit grain to make raw material, abandon the shell, fruit stone, shell string branch etc. of plam oil fruit, the distilling kettle put into water heats and is boiled by fruit grain;

2, the fruit grain boiled in distilling kettle is put into squeezing machine, squeeze into the mixture of oil, water, slag layering;

3, last process is squeezed machine oil, water, slag layering, the crude oil in upper strata is extracted out, delivers to refining oil factory and obtains plam oil;

4, discarded feed liquid remaining after last process crude oil being extracted out, respectively under horizontal three-phase screw rod whizzer and butterfly centrifugal machine high speed rotating, oil, water, slag is allowed to be separated, and flow out from the outlet whizzer different positions, isolated heavy oil liquid is recovered and sends back in squeezing machine, and slag is used as feed, fertilizer;

5, the waste liquid be left in last process is delivered to big area more than 10 dell pond and do aging precipitation process, again oil, oily(waste)water, slag are separated, the raw material of general industry oil and fat product made by isolated oil, slag is used as fertilizer, because the water separated is not up to standard, could discharge after need administering, simultaneously during ageing treatment, can discharge very smelly hydrogen sulfide in dell, contaminate environment and damaging the ozone layer, this is that environmental protection is unallowed.

Now use ceramic inorganic film pipe combination body to carry out oily water separation, and multiple-effect falling film evaporation separating technology replace original floor space large, destroy, the dell pond depositing technology of polluted air environment.

Commercially can select the ceramic inorganic film pipe of different size, size, different quantities passage as required.

Embodiment, select diameter 30 millimeters, long 1.2 meters, have the ceramic inorganic film pipe of 19 passages as 1 arm, its passage is the membrane pore size of 50 nanometers.

By above-mentioned 61 arms, concentrate and be placed in the same pipe fitting made with stainless steel tube, as 1 combined pipe fitting, 6 combined pipe fittings can be treated to flow 12 ~ 13 meters ³/ hour the waste water of oil-containing.

The more than one piece combined pipe fitting of employing more than one can be designed according to actual needs, concentrated arrangement is placed in together, the water of oil-containing, slag are carried out to the separating treatment of large discharge, also the ceramic inorganic film pipe of the different quantities passages such as 37,61 can be selected to make combined pipe fitting use, or 91 arms form a ceramic inorganic film pipe combined pipe fitting equipment use.

By the waste liquid separated from butterfly centrifugal machine, main still containing oil, the water of slag, account for more than 95%, by the separation of arm each in more than one piece combined pipe fitting, at this moment the moisture content in waste liquid first leaks out as filtered liquid and penetrating fluid from fenestra, remaining oil becomes concentrated solution to flow out from arm center-aisle, send back in squeezing machine and reclaim, slag is that sol particle is deposited on the inwall of center-aisle, clean out outside arm by buck again, but also have passed through once oil not only, water, the separation of slag, its technique is simple, processing speed is fast, instead of big area dell pond depositing technology, do not need to dig pit the plant engineering in pond, and floor space is little, pollution-free, odorlessness, production cost is low.

Multiple-effect falling film evaporation separating technology, namely uses multiple evaporation separating device to be connected in turn, continuous closed self-circulation or force that closed circulation is evaporated, is separated, complete after condensation process.At this moment mainly moisture content account for 98% in waste liquid, through continuous closed circulation evaporation repeatedly, is separated, and finally generates the steam focused in vapour pipe and to the water of condensation in condenser, for making plam oil.

At the palmitic raw material of production, fresh palm fruit there is shell, fruit stone and fruit string, branch etc., former is all that obsolete disposed waste now reclaims burning, make the required fuel making raw steam of evaporation separating technology to use, whole palmitic making is just carried out in a systemic circulation, discarded shell rubbish makes full use of as fuel and again reduces cost, therefore this technique does not produce any waste, pollutent is zero release, the middle secondary steam produced, water of condensation has all been recycled, the slag rotating scraper evaporator pump of remaining graininess is extracted drying out and is made fertilizer, feed is used, eliminate again spray art and spraying equipment, reduce production cost, environment protecting is good, production processing speed is in addition fast, greatly shorten the production cycle, enhance productivity, palmitic need of production in enormous quantities can be met, practical value is high.

Claims

1. produce palmitic waste liquid treatment process for one kind, comprise 1, boiled in distilling kettle by fresh palm fruit grain and squeeze in squeezing machine, through oil in squeezing machine, water, after slag is separated, crude oil in upper strata takes rear remaining a small amount of oil away, oily(waste)water, the waste liquid of slag, respectively under horizontal three-phase screw rod whizzer and butterfly centrifugal machine high speed rotating, allow oil, oily(waste)water, slag is separated, and flow out from the outlet whizzer different positions, isolated heavy oil liquid is recovered in squeezing machine, slag makes fertilizer, characterized by further comprising 2, the waste liquid stayed by last process---mainly oily(waste)water is delivered in more than one ceramic inorganic film pipe combined pipe fitting, each arm in ceramic inorganic film pipe combined pipe fitting is separated, the penetrating fluid first leaked out from fenestra and filtered liquid are water, remaining oil becomes the passage of concentrated solution in the middle of arm to flow out recovery, on center-aisle inwall, precipitation is slagged tap, cleaned out outside arm by buck again and make feed, fertilizer, 3, waste liquid in last process is mainly organic waste water and accounts for more than 97%, deliver in multiple-effect falling film evaporating separation device and evaporate, be separated, after condensation cycle process, the high-temperature condensation water recovery generated is delivered to distilling kettle and is used as the boiling hot water of boiling plam oil fruit needed for grain, slag makes feed, fertilizer, whole closed circulation treating processes is zero release.

2. the palmitic waste liquid treatment process of production according to claim 1, is characterized in that the water containing oil, slag in isolated waste liquid in described whizzer from high speed rotating accounts for more than 95%.

3. the palmitic waste liquid treatment process of production according to claim 1, the waste liquid delivered to described in it is characterized in that in multiple-effect falling film evaporating separation device is mainly waste water and accounts for more than 98%.

4. the palmitic waste liquid treatment process of production according to claim 1, is characterized in that describedly making fertilizer, the slag of feed is sol particle.

5. the palmitic waste liquid treatment process of production according to claim 1, is characterized in that the disposed waste such as the shell abandoned of described fresh palm fruit grain, fruit stone, fruit string reclaims fuel needed for burning do evaporation separating technology and makes raw steam use.

6. the palmitic waste liquid treatment process of production according to claim 1, it is characterized in that described multiple-effect falling film evaporation separating technology: namely use multiple evaporation, separating device is connected in turn, continuous closed self-circulation or force closed circulation to be evaporated, be separated, complete after condensation process.