KR102000606B1 - Composiotion and method for reducing the malodor of sludge from petrochemical process - Google Patents

Abstract

The present invention relates to a method for producing a sludge, comprising the steps of: (a) preparing a malodor reducing agent as vegetable waste oil and natural material and storing the same in a first place; (b) reducing odor of the sludge by spraying an odor reducing agent onto the sludge collected in the second place And (c) trapping the residual odor in the second location into the third location and transferring the surplus odor reducing agent collected in the second location into the third location to reduce the odor in the third location, , A method for reducing odor of sludge generated during a petrochemical process, and a composition thereof.

Description

Technical Field [0001] The present invention relates to a composition for reducing odor of a petrochemical process sludge and a method for reducing odor of the petrochemical process sludge,

The present invention relates to a composition for reducing odor and a method for reducing odor of a sludge generated during a petrochemical process using vegetable waste oil and natural materials.

Generally, there are physical removal methods, chemical removal methods, biochemical removal methods, and sensory deodorization methods.

Here, the physical removal method removes the odorous substance by adsorbing or collecting the odor component on the surface as a compound having a strong adsorption and trapping ability such as activated carbon, silica, and cyclodextrin.

The chemical removal method is a method of converting a malodorous substance into a decomposing or odorless compound by reacting a substance which is highly reactive with the malodorous substance by using a chemical reaction such as neutralization, addition, polymerization, oxidation, reduction and hydrolysis, .

Recently, a flavonoid deodorant extracted from plants has been used as a deodorant capable of removing odor substances. Flavonoids are generic terms of plant pigments having a carbon skeleton of C ₆ -C ₃ -C ₆ , including flavones, flavonones, anthoclons, anthocyanins, catechins, and the like.

Conventional freezing room deodorant is used in a physical removal method that utilizes the principle of physical adsorption as a solid type deodorant that does not freeze in a low temperature (freezing) freezer room such as charcoal (activated carbon), coffee and tea tea bag.

In addition, the deodorizing effect of the gel deodorant for refrigerator used as a chemical deodorization method is excellent, but there is a disadvantage that it freezes at a freezing temperature of the freezing chamber.

Here, in order to effectively remove the odor, it is required that the cause of the offensive odor is eliminated, the offensive odor masking and the offensive material removal are simultaneously carried out efficiently. To this end, a component capable of achieving the above effect must be provided, And should be able to demonstrate its function.

In particular, the odor of sludge generated in petrochemical processes such as oxidation and purification which produce terephthalic acid (TPA) from crude oil and para xylene as a raw material is not suitable treatment method, There is a problem in that atmospheric environment pollution due to odor is exposed not only to the workers in the workplace but also to workers in the workplace due to the absence of the malodor reduction system which can cope with the sludge continuously discharged during the operation of the factory for the operation.

TPA is a pure white powder that is prepared by oxidation, purification, separation and drying process using para-xylene purified from crude oil as a main raw material. TPA is mainly used as a raw material for polyester fiber, PET resin, film paint and engineering plastics. It is excellent in heat resistance, abrasion resistance and insulation, and can be applied to various applications such as various kinds of bottles, electric appliances, electronic goods, industrial materials, building materials, Technology is being developed in the field.

However, TPA, BA, P-TL, 4-CBA, IPA and other ingredients, which are chemical components of residue terephthalic acid (residue CTA), which is a low-purity terephthalic acid residue during TPA production process, There is a problem such as a stinging phenomenon, and the demand for improvement of the working environment through the reduction thereof is increasing.

Korean Registered Patent No. 10-0847905 (Registered Date: July 16, 2008)

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made in order to solve the problems of the prior art described above, and it is an object of the present invention to provide a method for effectively reducing the odor of sludge generated during the TPA production process by using a composition comprising waste vegetable oils, natural materials, A composition for reducing odor, and a method for reducing odor.

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A method for reducing odor of a sludge according to an embodiment of the present invention comprises the steps of: (a) (1) removing odor-reducing components including fatty acids, mono fatty acids, linolenic acid, oleic acid, and palylic acid contained in vegetable waste oil A pretreatment step of removing the impurities by using a membrane filter, and a step of injecting a nonionic surfactant into the lung oil after the pretreatment step and mixing the same Preparing a malodor reducing agent and storing it in a first place; (b) reducing the odor of the sludge in the second location by injecting the odor reducing agent into the sludge collected into the second location; And (c) collecting the odor remaining in the second site into the third site and transferring the surplus odor reducing agent collected in the second site into the third site to reduce the odor trapped in the third site .

In the malodor reduction method of the sludge according to the embodiment of the present invention, after the step (c), further comprising the step of re-injecting the surplus odor reducing agent in the third site into the sludge collected in the second site .

In the malodor reduction method of the sludge according to the embodiment of the present invention, the first site may be controlled to have a temperature within a range of 20 to 30 ° C.

In the malodor reduction method of the sludge according to the embodiment of the present invention, in the step (b), the malodor reduction agent may be injected through the fixed nozzle or through the movable nozzle.

In the malodor reduction method of the sludge according to the embodiment of the present invention, the malodor reducing agent may be injected after the sludge collected in the second site is subjected to a planarization process.

According to the present invention, the following advantages are provided.

The odor reducing agent injected in the second place is coated on the polymer surface by contacting with the sludge, thereby reducing the odor through the vapor pressure reducing effect, so that the odor in the second place is effectively reduced.

In addition, it is possible to reduce the odor of the sludge more effectively by passing the odor reduction process not only in the second place but also in the third place.

Also, since the surplus odor remover in the second area is reused for reducing odor, the amount of use of the odor remover can be efficiently managed.

1 is a schematic view of a system to which a malodor reduction method of a sludge according to the present embodiment is applied.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The composition for reducing odor of a petrochemical process sludge according to an embodiment of the present invention and a method for reducing odor will be described in detail with reference to the accompanying drawings.

1 is a schematic view of a system to which a malodor reduction method of a sludge according to the present embodiment is applied.

As shown in FIG. 1, a method of reducing malodor of a petrochemical process sludge according to an embodiment of the present invention includes the steps of: (a) preparing a malodor reducing agent 101 and storing it in a first place 100; b) reducing the odor of the sludge 201 in the second location 200 by spraying the odor reducing agent into the sludge 201 collected in the second location 200, and c) The residual odor in the third place 300 is collected into the third place 300 and the excess odor reducing agent collected in the second place 200 is transferred into the third place 300 to reduce the odor collected in the third place 300 .

In the step (a), the malodor reducing agent may be produced through the following two steps (① and ②) using vegetable lungs and natural substances.

(1) In order to increase the purity of the malodor reducing component including fatty acid, mono fatty acid, linolenic acid, oleic acid, and palylic acid contained in vegetable waste oil, the lung oil is filtered using a membrane filter A pretreatment step for removing impurities

(2) Injecting nonionic surfactant into the lungs after the pretreatment step and mixing them

Here, step (a) may be performed using a metal membrane filter having an average pore diameter of the filter of 0.2 to 5 mu m. In step (a), 5 to 10% by weight of the nonionic surfactant can be injected.

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the malodor reducing agent 101 produced in the step (a) may be stored in the first place 100. Here, the first place 100 may be made of, for example, stainless steel to prevent the vegetable oil, which is a main component of the odor reducing agent, from gelating at a temperature of minus 5 degrees or less, For example, a temperature of 20 to 30 DEG C can be maintained.

The sludge 201 collected in the second place 200 in the step (b) may be sludge generated during a petrochemical process, for example, a TPA production process, Through the inlet 211 of the second location 200.

In the step (b), the malodor reducing agent may be sprayed to the sludge 201 collected in the second place 200 at a high pressure. The pipe 151 for spraying connected to the first place 100 may be, for example, a pipe 151 having a strength against pressure at the time of high-pressure injection made of stainless steel. The fluid injection pump 152 connected to the pipe 151 can select and use a pump capable of oil injection.

The injection nozzle 153 of the malodor reduction agent is not a nozzle for spraying liquid but can be selected and used so that the oil flow can be injected at a high pressure of a predetermined pressure or higher. The injection nozzle 153 may be installed to be fixedly injected while automatically controlling the sludge discharge at the point where the sludge is collected (discharged) into the second place 200. Or the odor reducing agent may be sprayed by the movable nozzle 153, the spray nozzle 153 may be provided so as to be movable on the rails provided in the second place 200.

The sludge 201 collected in the second place 200 may have a moisture content of 30 to 50% or more so that the odor reducing agent injected in the above manner can be effectively adsorbed on the surface of the sludge.

In the step (b), the sludge level control means (not shown) may be preceded by the sludge level control means (not shown) that can be installed in the second location 200 before the malodor reduction agent is sprayed onto the collected sludge. Through the sludge flattening process, the malodor reducing agent injected from the nozzle 153 is uniformly sprayed / applied to the sludge layer continuously accumulated to minimize the outflow of the malodor to the outside of the process, and the amount of the malodor reduction jet can be controlled constantly It is possible to optimize the use of odor reducing agent while operating efficiently.

As described above, if the malodor reducing agent is injected in the step (b), the malodor reducing agent is sprayed uniformly on the sludge layer, and the polymer surface is coated on the surface of the sludge by the malodor reducing agent, The odor of the sludge is reduced by the odor reducing component of the sludge.

In the step (c), the odor reducing agent and the unreacted residual odor are collected into the third place 300 through the collection line 251 in the second place 200 during the step (b). And the surplus odor reducing agent that can be collected, for example, through the collecting pore block at the bottom of the second location 200 is also transported through the transport line 252 into the third location 300.

In step (c), the odor reduction process proceeds in the third place (300) while reacting with the surplus odor reducing agent that has been collected. As a result, the odor reduction efficiency can be improved, and the surplus odor reducing agent can be discharged without the need to efficiently manage the amount of the odor reducing agent used.

Meanwhile, the surplus odor reducing agent transferred into the third place 300 in the step (c) may be reused to reduce odor of the collected sludge in the second place 200. As an example, the reusable process may include transferring the surplus odor reducing agent transferred in the third place 300 back to the first place 100 through the transfer line 252 and thus being transferred to the first place 100 The hot odor reducing agent is supplied to the second location 200 through the piping 151 connected between the first location 100 and the second location 200, the injection pump 152 installed in the pipe 151 and the spray nozzle 153 ) To the sludge. (Not shown) may be provided between the third place 300 and the second place 200 to spray the odor reducing agent in the third place 300 directly into the second place 200 . By thus reusing the odor reducing agent, the amount of use of the odor reducing agent can be more efficiently managed.

The embodiments according to the present invention have been described in detail above. It should be noted that the above-described embodiments illustrate preferred embodiments of the present invention and the present invention is not limited to the above-described embodiments. It will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the present invention.

100: 1st place 101: odor reducing agent
151: piping 152: pump
153: Nozzle 200: Second place
201: Sludge 300: Third place

Claims (6)

A pretreatment step of removing impurities by using a metal membrane filter having an average diameter of the filter pores of 0.2 to 5 μm;
A mixing step of injecting nonionic surfactant into the pulmonary oil after the pretreatment step and mixing the pulmonary oil with the nonionic surfactant;
Storing the waste oil through the mixing step in a first location (100) controlled to have a temperature within a range of 20 to 30 占 폚;
A planarizing step of planarizing the moisture-containing sludge collected in the second place (200);
A spraying step of spraying the waste oil stored in the first place (100) to the sludge having undergone the smoothing step so that the waste oil is coated on the surface of the sludge in the second place (200); And
And collecting surplus waste oil not coated on the sludge in the lower portion of the second place (200) from the waste oil sprayed in the spraying step. The method according to claim 1,
Wherein the waste oil is sprayed through the fixed nozzle (153) or sprayed through the movable nozzle (153) in the spraying step. delete delete delete delete

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