阅读说明：本技术 一种冷冻升华垃圾处理工艺 (Freezing sublimation garbage treatment process ) 是由 杨书传 钱从彪 于 2021-06-21 设计创作，主要内容包括：本发明提供一种冷冻升华垃圾处理工艺,具体涉及到垃圾处理技术领域。本发明包括以下步骤,将含水垃圾置于冷冻干燥箱内的搁板上,冷冻干燥箱通过制冷系统使垃圾完全冻结；降低冷冻干燥箱内的压强,且保持冷冻干燥箱内垃圾的冰冻状态,冰开始升华；冷冻干燥箱内的搁板进行加热；升华的水蒸气通过冷凝器结成冰晶；水蒸气升华速度明显下降时,对垃圾进行再干燥,适当提高搁板温度,直至垃圾温度与搁板温度重合达到干燥为止。本发明提出的一种冷冻升华垃圾处理工艺,能够有效避免大量异味的散发,避免有害垃圾或危废垃圾中有毒有害物质随水份逸出,使垃圾脱水更加彻底。(The invention provides a freezing sublimation garbage treatment process, and particularly relates to the technical field of garbage treatment. The method comprises the following steps of placing water-containing garbage on a shelf in a freeze drying box, and completely freezing the garbage in the freeze drying box through a refrigerating system; reducing the pressure in the freeze drying box, keeping the frozen state of the garbage in the freeze drying box, and leading ice to be sublimated; heating the shelf in the freeze drying box; the sublimed water vapor is condensed into ice crystals through a condenser; when the sublimation speed of the water vapor is obviously reduced, the garbage is dried again, and the temperature of the shelf is properly increased until the temperature of the garbage is superposed with the temperature of the shelf to achieve drying. The freezing sublimation garbage treatment process provided by the invention can effectively avoid the emission of a large amount of peculiar smell, and avoid toxic and harmful substances in harmful garbage or dangerous waste garbage from escaping along with moisture, so that the garbage is dehydrated more thoroughly.)

1. A frozen sublimed garbage treatment process is characterized by comprising the following steps:

s1: placing water-containing garbage on a shelf in a freeze drying box, closing a box door, and completely freezing the garbage in the freeze drying box through a refrigerating system;

s2: discharging gas in the freeze drying box in S1 through a vacuum system, reducing the pressure in the freeze drying box, keeping the freezing state of garbage in the freeze drying box, reducing the pressure to 1.33Pa, leading ice to start sublimating, and reducing the temperature to-20-60 ℃ to obtain higher sublimation efficiency;

s3: heating the shelf in the freeze drying box in the S2, and continuously supplying heat required by ice sublimation;

s4: the sublimed water vapor is condensed into ice crystals through a condenser;

s5: when the sublimation speed of the water vapor is obviously reduced, the garbage is dried again, and the temperature of the shelf is properly increased until the temperature of the garbage is superposed with the temperature of the shelf to achieve drying;

s6: and performing harmless discharge on the sublimation water collected in the S4 through a sterilization and disinfection process.

2. The process for frozen sublimation waste treatment according to claim 1, characterized in that: the temperature in the freeze drying cabinet in S1 was-40 ℃.

3. The process for frozen sublimation waste treatment according to claim 1, characterized in that: the heating temperature of the shelf in the S3 is 1-10 ℃ higher than that of the garbage.

4. The process for frozen sublimation waste treatment according to claim 1, characterized in that: and S5, heating the shelf to 30-35 ℃.

Technical Field

The invention belongs to the technical field of garbage treatment, and particularly relates to a freezing sublimation garbage treatment process.

Background

The garbage is solid waste generated in daily life and production of human beings, has large discharge amount, complex and various components, pollution, resource and socialization, needs harmless, resource, reduction and socialization treatment, and can pollute the environment, influence the environmental sanitation, waste resources, destroy the safety of production and life and destroy the social harmony if the garbage cannot be properly treated. The garbage disposal is to rapidly remove the garbage, perform harmless treatment and finally reasonably utilize the garbage. The garbage disposal methods widely used today are sanitary landfills, high temperature composting and incineration. The purpose of garbage treatment is harmlessness, resource utilization and reduction.

In the existing garbage treatment process, a large amount of peculiar smell can be emitted, and dehydration and drying are insufficient. Therefore, there is a need for a frozen sublimation waste treatment process that can solve the above problems.

Disclosure of Invention

The invention aims to provide a frozen sublimed garbage treatment process, which can effectively avoid the emission of a large amount of peculiar smell and ensure that garbage is dehydrated more thoroughly.

The invention provides the following technical scheme:

a frozen sublimed garbage treatment process comprises the following steps:

s1: placing water-containing garbage on a shelf in a freeze drying box, closing a box door, and completely freezing the garbage in the freeze drying box through a refrigerating system;

s2: discharging gas in the freeze drying box in S1 through a vacuum system, reducing the pressure in the freeze drying box, keeping the freezing state of garbage in the freeze drying box, reducing the pressure to 1.33Pa, leading ice to start sublimating, and reducing the temperature to-20-60 ℃ to obtain higher sublimation efficiency;

s3: heating the shelf in the freeze drying box in the S2, and continuously supplying heat required by ice sublimation;

s4: the sublimed water vapor is condensed into ice crystals through a condenser;

s5: when the sublimation speed of the water vapor is obviously reduced, the garbage is dried again, and the temperature of the shelf is properly increased until the temperature of the garbage is superposed with the temperature of the shelf to achieve drying;

s6: and performing harmless discharge on the sublimation water collected in the S4 through a sterilization and disinfection process.

Preferably, the temperature in the lyophilization chamber in S1 is-40 ℃.

Preferably, the heating temperature of the shelf in the S3 is 1-10 ℃ higher than that of the garbage.

Preferably, the shelf in S5 is heated to 30-35 ℃.

The invention has the beneficial effects that:

1. a large amount of peculiar smell is not generated in the garbage treatment process, so that toxic and harmful substances in the harmful garbage or the dangerous waste garbage are prevented from escaping along with moisture;

2. the garbage is dehydrated and dried thoroughly, and dried dry substances and grease are prepared into biomass fuel or soil additives and fertilizers, so that the garbage is recycled;

3. the waste treatment produces few by-products and no secondary waste is produced.

Detailed Description

Example 1

A frozen sublimed garbage treatment process comprises the following steps:

s1: placing water-containing garbage on a shelf in a freeze drying box, closing a box door, and completely freezing the garbage in the freeze drying box through a refrigerating system;

s2: discharging gas in the freeze drying box in S1 through a vacuum system, reducing the pressure in the freeze drying box, keeping the freezing state of garbage in the freeze drying box, reducing the pressure to 1.33Pa, leading ice to start sublimating, and reducing the temperature to-20-60 ℃ to obtain higher sublimation efficiency;

s3: heating the shelf in the freeze drying box in the S2, wherein the heating temperature of the shelf is 1 ℃ higher than that of the garbage, the garbage on the shelf is always in a frozen state, and the heat required by ice sublimation is continuously supplied;

s4: the sublimed water vapor is condensed into ice crystals through a condenser;

s5: when the sublimation speed of the water vapor is obviously reduced, the garbage is dried again, and the temperature of the shelf is properly increased to 32 ℃ until the temperature of the garbage is superposed with the temperature of the shelf to dry;

s6: and performing harmless discharge on the sublimation water collected in the S4 through a sterilization and disinfection process.

Example 2

A frozen sublimed garbage treatment process comprises the following steps:

s1: placing water-containing garbage on a shelf in a freeze drying box, closing a box door, and completely freezing the garbage in the freeze drying box through a refrigerating system;

s2: discharging gas in the freeze drying box in S1 through a vacuum system, reducing the pressure in the freeze drying box, keeping the freezing state of garbage in the freeze drying box, reducing the pressure to 1.33Pa, leading ice to start sublimating, and reducing the temperature to-20-60 ℃ to obtain higher sublimation efficiency;

s3: heating the shelf in the freeze drying box in the S2, wherein the heating temperature of the shelf is 5 ℃ higher than that of the garbage, the garbage on the shelf is always in a frozen state, and the heat required by ice sublimation is continuously supplied;

s4: the sublimed water vapor is condensed into ice crystals through a condenser;

s5: when the sublimation speed of the water vapor is obviously reduced, the garbage is dried again, and the temperature of the shelf is properly increased to 32 ℃ until the temperature of the garbage is superposed with the temperature of the shelf to dry;

s6: and performing harmless discharge on the sublimation water collected in the S4 through a sterilization and disinfection process.

Example 3

A frozen sublimed garbage treatment process comprises the following steps:

s1: placing water-containing garbage on a shelf in a freeze drying box, closing a box door, and completely freezing the garbage in the freeze drying box through a refrigerating system;

s2: discharging gas in the freeze drying box in S1 through a vacuum system, reducing the pressure in the freeze drying box, keeping the freezing state of garbage in the freeze drying box, reducing the pressure to 1.33Pa, leading ice to start sublimating, and reducing the temperature to-20-60 ℃ to obtain higher sublimation efficiency;

s3: heating the shelf in the freeze drying box in the S2, wherein the heating temperature of the shelf is 10 ℃ higher than that of the garbage, the garbage on the shelf is always in a frozen state, and the heat required by ice sublimation is continuously supplied;

s4: the sublimed water vapor is condensed into ice crystals through a condenser;

s5: when the sublimation speed of the water vapor is obviously reduced, the garbage is dried again, and the temperature of the shelf is properly increased to 32 ℃ until the temperature of the garbage is superposed with the temperature of the shelf to dry;

s6: and performing harmless discharge on the sublimation water collected in the S4 through a sterilization and disinfection process.

Example 4

A frozen sublimed garbage treatment process comprises the following steps:

s1: placing water-containing garbage on a shelf in a freeze drying box, closing a box door, and completely freezing the garbage in the freeze drying box through a refrigerating system;

s2: discharging gas in the freeze drying box in S1 through a vacuum system, reducing the pressure in the freeze drying box, keeping the freezing state of garbage in the freeze drying box, reducing the pressure to 1.33Pa, leading ice to start sublimating, and reducing the temperature to-20-60 ℃ to obtain higher sublimation efficiency;

s3: heating the shelf in the freeze drying box in the S2, wherein the heating temperature of the shelf is 5 ℃ higher than that of the garbage, the garbage on the shelf is always in a frozen state, and the heat required by ice sublimation is continuously supplied;

s4: the sublimed water vapor is condensed into ice crystals through a condenser;

s5: when the sublimation speed of the water vapor is obviously reduced, the garbage is dried again, the temperature of the shelf is properly increased to 30 ℃ until the temperature of the garbage is superposed with the temperature of the shelf to dry;

s6: and performing harmless discharge on the sublimation water collected in the S4 through a sterilization and disinfection process.

Example 5

A frozen sublimed garbage treatment process comprises the following steps:

s1: placing water-containing garbage on a shelf in a freeze drying box, closing a box door, and completely freezing the garbage in the freeze drying box through a refrigerating system;

s2: discharging gas in the freeze drying box in S1 through a vacuum system, reducing the pressure in the freeze drying box, keeping the freezing state of garbage in the freeze drying box, reducing the pressure to 1.33Pa, leading ice to start sublimating, and reducing the temperature to-20-60 ℃ to obtain higher sublimation efficiency;

s3: heating the shelf in the freeze drying box in the S2, wherein the heating temperature of the shelf is 5 ℃ higher than that of the garbage, the garbage on the shelf is always in a frozen state, and the heat required by ice sublimation is continuously supplied;

s4: the sublimed water vapor is condensed into ice crystals through a condenser;

s5: when the sublimation speed of the water vapor is obviously reduced, the garbage is dried again, and the temperature of the shelf is properly increased to 32 ℃ until the temperature of the garbage is superposed with the temperature of the shelf to dry;

s6: and performing harmless discharge on the sublimation water collected in the S4 through a sterilization and disinfection process.

Example 6

A frozen sublimed garbage treatment process comprises the following steps:

s1: placing water-containing garbage on a shelf in a freeze drying box, closing a box door, and completely freezing the garbage in the freeze drying box through a refrigerating system;

s2: discharging gas in the freeze drying box in S1 through a vacuum system, reducing the pressure in the freeze drying box, keeping the freezing state of garbage in the freeze drying box, reducing the pressure to 1.33Pa, leading ice to start sublimating, and reducing the temperature to-20-60 ℃ to obtain higher sublimation efficiency;

s3: heating the shelf in the freeze drying box in the S2, wherein the heating temperature of the shelf is 5 ℃ higher than that of the garbage, the garbage on the shelf is always in a frozen state, and the heat required by ice sublimation is continuously supplied;

s4: the sublimed water vapor is condensed into ice crystals through a condenser;

s5: when the sublimation speed of the water vapor is obviously reduced, the garbage is dried again, and the temperature of the shelf is properly increased to 35 ℃ until the temperature of the garbage is superposed with the temperature of the shelf to dry;

s6: and performing harmless discharge on the sublimation water collected in the S4 through a sterilization and disinfection process.

Example 7

A frozen sublimed garbage treatment process comprises the following steps:

s1: placing water-containing garbage on a shelf in a freeze drying box, closing a box door, and completely freezing the garbage in the freeze drying box through a refrigerating system;

s2: discharging gas in the freeze drying box in S1 through a vacuum system, reducing the pressure in the freeze drying box, keeping the freezing state of garbage in the freeze drying box, reducing the pressure to 1.33Pa, leading ice to start sublimating, and reducing the temperature to-20-60 ℃ to obtain higher sublimation efficiency;

s3: heating the shelf in the freeze drying box in the S2, wherein the heating temperature of the shelf is 5 ℃ higher than that of the garbage, the garbage on the shelf is always in a frozen state, and the heat required by ice sublimation is continuously supplied;

s4: the sublimed water vapor is condensed into ice crystals through a condenser;

s5: when the sublimation speed of the water vapor is obviously reduced, the garbage is dried again, and the temperature of the shelf is properly increased to 32 ℃ until the temperature of the garbage is superposed with the temperature of the shelf to dry;

s6: and performing harmless discharge on the sublimation water collected in the S4 through a sterilization and disinfection process.

Compared with the results of the drying effect and the drying efficiency, the effect of the embodiment 7 is optimal, no large amount of peculiar smell is generated in the garbage treatment process, and the toxic and harmful substances in the harmful garbage or the dangerous waste garbage are prevented from escaping along with the moisture; the garbage is dehydrated and dried thoroughly, and dried dry substances and grease are prepared into biomass fuel or soil additives and fertilizers, so that the garbage is recycled; the waste treatment produces few by-products and no secondary waste is produced.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.