KR20000001074A - Elimination method of hazardous components from basal poroligenous liquor - Google Patents

Abstract

PURPOSE: An elimination method of hazardous components (methanol, phenols) from basal poroligenous liquor is provided to minimize loss of basal poroligenous liquor. CONSTITUTION: The method comprises the steps of: eliminating phenols by passing basal poroligenous liquor through a filtration device packed with a solid absorber such as Ambelite-XAD-4 (8x30 mesh) at a flow rate of 10 ml/min; evaporating the filtered liquor at 70-90°C to remove methanol and remnant phenols.

Description

How to remove harmful components in basic wood vinegar

The present invention relates to a method for removing toxic components contained in basal vinegar, and more particularly, to a method for removing harmful components such as methanol and phenols contained in basic vinegar with minimal loss of wood vinegar.

In general, crude wood vinegar is a wood kiln (charcoal-burning kiln), such as a small amount of air in the wood stacks and fire to burn the temperature of the kiln kiln 350 ~ 450 ℃ white smoke comes out and the wood becomes charcoal. In this process, when the smoke discharged through the stack of tangama is collected in a house study and passed through the cooling stack, condensation produces brown water droplets, which are obtained by collecting them in one place.

The crude wood vinegar obtained as described above is separated into three layers when placed in an acid-resistant container and left in a natural state for six months to one year. The uppermost layer is a light oil layer, the middle layer is wood vinegar, and the lower layer is a tar layer. Thus, only the intermediate layer is separated to obtain an effective conventional basal liquor solution of pH 3.

The components of the basic wood vinegar are organic acids such as formic acid, acetic acid, lactic acid; Phenol oils such as phenol, cresol, 2, 4- and 3,5-kisylenol and the like; Carbonyl compounds as formaldehyde, acetaldehyde, propion aldehyde and the like; Alcohols are known to contain about 280 organic acids such as methanol and ethanol, and 13 rare elements such as minerals and germanium.

Crude wood and basic wood vinegar as described above is very versatile as the wood vinegar solution is used for soil disinfectant, pest control, preservatives, compost, deodorant, coagulant, dyeing aid, paint, wood extract extract for medicine, pesticide, food, processing It is widely used as an additive, feed additive, flavoring agent, industrial chemical raw materials such as concentrated acid, medicine, fertilizer and additives.

In addition, the basic herb solution contains many organic components and rare elements useful for health, and also contains harmful components such as methanol and phenol.

Methanol is regulated at 0.1% in the plant extract fermented foods of the Food Code, and not regulated in other products, but it is clearly harmful for health and should not be incorporated into food and beverage.

Phenol is also used as a chemical raw material for synthetic resins, nylons, dyes and medicines, but because of its toxicity, it should not be included in food and beverages.

Therefore, in order to use wood vinegar for food and beverage, it is of no value for food and beverage unless the methanol and perols, which are harmful components contained in the basic wood vinegar, are separated and removed, while retaining useful ingredients.

Table 1 below is the amount of harmful components such as methanol and phenol contained in the basic wood vinegar.

Item Content Methanol 2526 mg / ℓ phenol 286 mg / ℓ 2-methoxyphenol 373 mg / ℓ

Therefore, the applicant filed a patent application "No. 21807" to the Korean Intellectual Property Office on June 17, 1996 for "the removal method of harmful ingredients contained in the basic wood solution and the edible wood solution prepared by the same method".

Patent Application No. 96-21807 filed by the Applicant has distilled the basal wood vinegar at 95 to 105 ℃ to recover 50% of the distillate and discarded to remove some of the methanol and phenols, the remaining distillate (50% ) Is a method of removing phenols by passing the activated carbon through a predetermined flow rate.

In the conventional method for removing toxic components contained in the basic wood vinegar, the basic wood vinegar is distilled at 95 to 105 ° C. in order to remove methanol, and 50% of the distillate obtained in the resulting wood vinegar is recovered and disposed of. Since the phenol contained in the wood vinegar is removed, there is a problem that the loss of the basic wood vinegar is very large.

The present invention devised to solve this problem is to provide a harmful component removal method that can surely remove the harmful components contained in the basic wood vinegar while minimizing the loss of the basic wood vinegar.

1 is a block diagram schematically illustrating a method for removing a noxious component according to the present invention.

An object of the present invention described above is to purify the conventional basic wood vinegar containing the harmful components obtained in the wood drying process by a purification method using a solid adsorbent, and to remove the harmful components by distilling the purified basic wood vinegar to a predetermined temperature Achieved by the method of removing harmful components contained in the basic wood vinegar.

Hereinafter, with reference to the accompanying drawings it will be described with respect to the removal of harmful components contained in the basal vinegar solution according to a preferred embodiment of the present invention.

The basic wood vinegar at pH 3 is separated into three layers when the crude wood vinegar obtained from carbonization of wood is left in nature for several months. In other words, the upper layer is formed of a diesel oil layer, the middle layer is wood vinegar, and the lower layer is formed into a tar layer, and is obtained by separating the intermediate layer.

In the method for removing harmful components contained in the basic wood vinegar according to the present invention, the conventional basic wood vinegar obtained as described above is passed through a solid adsorbent purification (filtration) device, filtered, and then the filtered basic wood vinegar is introduced into a distillation tank and gradually heated. Maintaining the ℃ to 90 ℃ distilled filtered basal vinegar to remove the remaining harmful components to use as an edible vinegar.

That is, the basal wood liquor introduced into the purification (filtration) device removes most of the phenols among the harmful components contained while passing through the solid adsorbent at a predetermined flow rate.

The solid adsorbents include activated carbon, alumina, zeolite carbon, and amberlite-XAD-4, and preferably amberlite-XAD having the best removal rate (%). We recommend using -4.

Kinds density % Removal Dowex 1 × 8 61.74 49.7 Amberlite- XAD-4 31.54 75.2 Active Charcoal 46.17 62.4 Zeolite carbon 51.43 43.0

As described above, the basic wood vinegar solution in which most of the phenols are removed by the solid adsorbent in the purification (filtration) device is added to the distillation tank.

The solid adsorbent is filled into a tablet (filtration) container with a thickness of about 40 cm, and the distillate is purified (filtered) with a flow rate of 10 ml / min.

When the basal wood vinegar is introduced into the distillation tank, while the third valve is closed and the second valve is opened, the temperature of the distillation tank is gradually raised to maintain the base wood vinegar while maintaining 70 ° C to 90 ° C. When the basal wood liquor is heated to the above temperature, methanol having a boiling point of 64.7 ° C. and some remaining phenols are distilled, condensed in the condenser, and recovered through the discharge pipe as distillate. At this time, since distillation is performed at a relatively low temperature, harmful components such as methanol having a low boiling point are almost distilled, but the beneficial edible vinegar is minimized to evaporate, thereby minimizing the loss of edible vinegar mixed with the toxic components removed and recovered.

The condenser is provided with a cooling coil through which cooling water passes, and the basic wood vinegar to be distilled is cooled to be a distillate. The recovered distillate contains almost methanol, a toxic component contained in the basic wood vinegar, and phenols Is partially contained and is disposed of because it cannot be used for food, but its use can be widely used for soil disinfection and soil improvement agents, paints, preservatives, and other industrial chemical raw materials.

When the phenols are removed by the solid adsorbent and the methanol and residual phenols are almost removed by the distillation process, the second valve is closed and the third valve is opened to condense and condensed in the condenser. The solution is edible vinegar solution.

The recovered distillate contains almost no methanol and phenols, but the useful organic acids contained in the basal vinegar are not removed by purification or distillation using solid adsorbents. .

Phenols are almost removed in the purification (filtration) device, methanol is almost removed during the distillation of electrons (disposal distillate), and phenols remaining in the purification (filtration) are also distillation process of the electrons (disposal distillate). The distillate removed with methanol is used as an edible wooden vinegar.

This edible wood vinegar can be used to add useful organic acids and minerals contained in edible wood vinegar by adding 1/50 to 1/200 to water or general beverages.

That is, the organic acid of the edible wood vinegar contains acetic acid, propionic acid, butyric acid, sorbic acid, benzoic acid, and isobutyic acid. It is expected to affect energy metabolism in vivo and enhance immunity in the body due to bactericidal effect.

In addition, it contains potassium (K), calcium (Ca) and magnesium (Mg) to maintain ionic balance in vivo, strengthen bones, and play an important role in activating ATP (adenosine triphosphate) in energy metabolism. Very effective in strengthening

According to the present invention described above, first, the basic wood vinegar is introduced into a solid adsorbent, that is, a purification (filtration) device using Amberlite-XAD-4, which has a very good phenol removal efficiency, to remove phenols contained in the basic wood vinegar, Purified basic wood vinegar is introduced into a distillation vessel and kept at a temperature between 70 ° C. and 90 ° C. to distill, thereby removing methanol and boiling phenols having a boiling point of 64.7 ° C. to obtain edible wooden vinegar without harmful components. By minimizing the amount of wood vinegar distilled and lost together with the powder it has the effect of significantly improving productivity and producing a high quality edible vinegar.

Claims (2)

Hazardous ingredients contained in the basic wood vinegar, characterized in that the conventional basic wood vinegar containing the harmful components obtained in the wood distillation process is purified by a purification method using a solid adsorbent, and distilled the purified basic wood vinegar to a predetermined temperature to remove the harmful components How to remove. 2. The purified basic wood vinegar solution according to claim 1, wherein the basic wood vinegar solution is passed through amberlite-XAD-4 having a size of a solid adsorbent of 8 x 30 mesh and a thickness of 40 cm at a flow rate of 10 ml / min to remove the purified phenols. The distillation at 70 ℃ to 90 ℃ to remove the harmful components contained in the basic wood vinegar, characterized in that to remove the methanol and residual phenol contained in the basic wood vinegar.