CN218064903U - Incineration treatment system for waste salt mud in trimethyl orthoformate production process - Google Patents

Abstract

The utility model discloses an incineration disposal system of abandonment salt mud in trimethyl orthoformate production technology, including burning furnace, torch, dissolving tank, water source, filter, slaked lime storage tank, evaporation crystallization unit and sodium chloride storage tank. Has the advantages that: the utility model can effectively decompose the organic matters in the salt slurry into water vapor and carbon dioxide by burning, further remove the organic matters and convert the calcium methoxide into calcium hydroxide; then filtering out calcium hydroxide through filtration to obtain a calcium hydroxide product; finally, sodium chloride meeting the industrial salt standard can be obtained through evaporation and crystallization. The utility model discloses simple structure easily realizes, can obtain two kinds of industrial products of calcium hydrate and sodium chloride with the abandonment salt mud of original through handling, has improved the utilization ratio of abandonment salt mud as a resource, has improved the economic benefits of enterprise greatly.

Description

Incineration treatment system for waste salt mud in trimethyl orthoformate production process

The technical field is as follows:

the utility model relates to an incineration disposal system of abandonment salt mud especially relates to the incineration disposal system of abandonment salt mud in the trimethyl orthoformate production technology.

The background art comprises the following steps:

trimethyl orthoformate (also called trimethoxymethane [ HC (OCH 3) 3 ]) is a colorless liquid with pungent odor, is inflammable, can be decomposed when contacting water, and can be dissolved in ethanol, ether, etc. Is an important organic synthesis intermediate, and is used for synthesizing various medicines, dyes, spices and the like. In recent years, the market demand of various industries on trimethyl orthoformate is obviously increased, and the market prospect is good.

In the process of producing trimethyl orthoformate, sodium metal and methanol are firstly reacted to generate sodium methoxide and hydrogen, and the sodium methoxide is further reacted with chloroform to generate trimethyl orthoformate and sodium chloride. Due to the purity problem of the raw material metal sodium, metal calcium impurities are often contained, and the metal calcium reacts with methanol to further generate methanol calcium impurities, so that the finally obtained product contains trimethyl orthoformate, sodium chloride, calcium methoxide and a small amount of incompletely reacted organic methanol, and the trimethyl orthoformate product and salt mud with main components of calcium methoxide, sodium chloride and a small amount of incompletely reacted organic substances are obtained after further distillation.

The utility model has the following contents:

an object of the utility model is to provide a simple structure, improved abandonment salt mud's incineration disposal system in trimethyl orthoformate production technology of resource utilization ratio of abandonment salt mud.

The utility model discloses by following technical scheme implement:

the incineration treatment system of the waste salt mud in the trimethyl orthoformate production process comprises an incinerator, a torch, a dissolving tank, a water source, a filter, a slaked lime storage tank, an evaporation crystallization unit and a sodium chloride storage tank;

the gas phase outlet of the incinerator is communicated with the gas inlet of the torch, the solid phase outlet of the incinerator and the water outlet of the water source are both communicated with the inlet of the dissolving tank, the outlet of the dissolving tank is communicated with the inlet of the filter, and the solid phase outlet of the filter is communicated with the inlet of the slaked lime storage tank;

and a liquid phase outlet of the filter is communicated with a feed inlet of a triple-effect evaporator of the evaporative crystallization unit, and a discharge outlet of a drying fluidized bed of the evaporative crystallization unit is communicated with an inlet of the sodium chloride storage tank.

Further, the evaporative crystallization unit comprises a triple-effect evaporator, a centrifugal crystallizer and a drying fluidized bed;

and the discharge hole of the triple-effect evaporator is communicated with the feed inlet of the centrifugal crystallizer, and the discharge hole of the centrifugal crystallizer is communicated with the feed inlet of the drying fluidized bed.

Further, a stirrer is arranged in the dissolving tank.

The utility model has the advantages that:

the utility model can effectively decompose the organic matters in the salt slurry into water vapor and carbon dioxide by burning, further remove the organic matters and convert the calcium methoxide into calcium hydroxide; then filtering out calcium hydroxide through filtration to obtain a calcium hydroxide product; finally, sodium chloride meeting the industrial salt standard can be obtained through evaporation and crystallization. The utility model discloses simple structure easily realizes, can obtain two kinds of industrial products of calcium hydrate and sodium chloride with the abandonment salt mud of original through handling, has improved the utilization ratio of abandonment salt mud as a resource, has improved the economic benefits of enterprise greatly.

Description of the drawings:

in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic diagram of the system structure of the present embodiment.

In the figure: incinerator 1, torch 2, dissolving tank 3, water source 4, filter 5, slaked lime storage tank 6, evaporative crystallization unit 7, triple effect evaporator 7.1, centrifugal crystallizer 7.2, drying fluidized bed 7.3, sodium chloride storage tank 8, agitator 9.

The specific implementation mode is as follows:

the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1:

the incineration treatment system of the waste salt slurry in the trimethyl orthoformate production process shown in fig. 1 comprises an incinerator 1, a torch 2, a dissolving tank 3, a water source 4, a filter 5, a slaked lime storage tank 6, an evaporative crystallization unit 7 and a sodium chloride storage tank 8; the evaporative crystallization unit 7 comprises a triple-effect evaporator 7.1, a centrifugal crystallizer 7.2 and a drying fluidized bed 7.3;

the gas phase outlet of the incinerator 1 is communicated with the gas inlet of the torch 2, the solid phase outlet of the incinerator 1 and the water outlet of the water source 4 are both communicated with the inlet of the dissolving tank 3, the outlet of the dissolving tank 3 is communicated with the inlet of the filter 5, and the solid phase outlet of the filter 5 is communicated with the inlet of the slaked lime storage tank 6; a stirrer 9 is provided in the dissolving tank 3.

The liquid phase outlet of the filter 5 is communicated with the feed inlet of a triple-effect evaporator 7.1, the discharge outlet of the triple-effect evaporator 7.1 is communicated with the feed inlet of a centrifugal crystallizer 7.2, the discharge outlet of the centrifugal crystallizer 7.2 is communicated with the feed inlet of a drying fluidized bed 7.3, and the discharge outlet of the drying fluidized bed 7.3 is communicated with the inlet of a sodium chloride storage tank 8.

The working principle is as follows:

the salt mud which mainly comprises calcium methoxide, sodium chloride and a small amount of incompletely reacted organic matters and is generated in the trimethyl orthoformate production process firstly enters an incinerator 1, is incinerated at the high temperature of 1000 ℃, can effectively decompose the organic matters contained in the salt mud into water vapor and carbon dioxide, and is discharged by a torch 2; meanwhile, after incineration, the calcium methyl alcohol in the salt slurry is converted into calcium hydroxide; the solid substance generated by incineration mainly contains calcium hydroxide and sodium chloride, and after the calcium hydroxide is mixed with water in the dissolving tank 3, the calcium hydroxide is slightly soluble in water, so after being filtered by the filter 5, the calcium hydroxide is filtered out and stored in a slaked lime storage tank 6 to be sold as a product; and the filtrate with sodium chloride as the main component firstly enters a triple-effect evaporator 7.1 for concentration, then enters a centrifugal crystallizer 7.2 for crystallization, and finally is dried by a drying fluidized bed 7.3 to reach the industrial salt standard and be stored in a sodium chloride storage tank 8 for sale as a product.

The above description is only for the preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (3)

1. The incineration treatment system for the waste salt mud in the trimethyl orthoformate production process is characterized by comprising an incinerator, a torch, a dissolving tank, a water source, a filter, a slaked lime storage tank, an evaporative crystallization unit and a sodium chloride storage tank;

the gas phase outlet of the incinerator is communicated with the gas inlet of the torch, the solid phase outlet of the incinerator and the water outlet of the water source are both communicated with the inlet of the dissolving tank, the outlet of the dissolving tank is communicated with the inlet of the filter, and the solid phase outlet of the filter is communicated with the inlet of the slaked lime storage tank;

and a liquid phase outlet of the filter is communicated with a feed inlet of a triple-effect evaporator of the evaporative crystallization unit, and a discharge outlet of a drying fluidized bed of the evaporative crystallization unit is communicated with an inlet of the sodium chloride storage tank.

2. The incineration disposal system for waste salt sludge in a trimethyl orthoformate production process according to claim 1, wherein said evaporative crystallization unit comprises a triple-effect evaporator, a centrifugal crystallizer and a drying fluidized bed;

and the discharge hole of the triple-effect evaporator is communicated with the feed inlet of the centrifugal crystallizer, and the discharge hole of the centrifugal crystallizer is communicated with the feed inlet of the drying fluidized bed.

3. The system for incinerating waste salty mud generated in the trimethyl orthoformate production process according to claim 1, wherein an agitator is provided in the dissolution tank.

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