PRESSURIZATION THERMO-SENSITIVE GASIFICATION PHASE CHANGE CONSOLIDATION AND THERMAL DESENSITIZATION INTERMITTENT EVAPORATOR USING SAME

Abstract

The disclosure provides a thermal desensitization intermittent evaporator. The thermal desensitization intermittent evaporator includes a shell and at least one heating body disposed in the shell, wherein the heating body includes an electrical heating body and a wire connecting the electrical heating body, the wire is lead out from the shell to connect a power source; the electrical heating body includes a heating tube base and a metal joint mounted on the top of the heating tube base, the heating tube base includes upper and lower two bases, the upper base is a conductive low-heat-conduction material, and the lower base is a conductive heat-generating material. The disclosure can realize intermittent heating and high-pressure steam injection, thereby improving the activity of a water molecule, rapidly flowing to a low-temperature area and improving the efficiency of consolidation.

Claims

1. A thermal desensitization intermittent evaporator, comprising: a shell and at least one heating body disposed in the shell, the heating body comprising an electrical heating body and a wire connecting the electrical heating body, the wire being lead out from the shell to connect a power source, wherein the electrical heating body comprises a heating tube base and a metal joint mounted on the top of the heating tube base, the metal joint connects the wire, the heating tube base comprises upper and lower two bases, the upper base is a conductive low-heat-conduction material, the lower base is a conductive heat-generating material, and the upper base is connected with the metal joint.

2. The thermal desensitization intermittent evaporator according to claim 1, wherein a gas injection hole is formed in the shell, or the shell is a ceramic micropore sleeve.

3. The thermal desensitization intermittent evaporator according to claim 1, wherein the conductive low-heat-conduction material is low-heat-conduction graphite.

4. The thermal desensitization intermittent evaporator according to claim 1, wherein the conductive heat-generating material is quartz or silicon carbon.

5. The thermal desensitization intermittent evaporator according to claim 1, wherein the conductive low-heat-conduction material and the conductive heat-generating material are molded by compaction sintering.

6. The thermal desensitization intermittent evaporator according to claim 1, wherein the metal joint of the heating tube base is wrapped with a sealing insulation material.

7. The thermal desensitization intermittent evaporator according to claim 6, wherein the sealing insulation material is high-temperature silica gel or resin.

8. The thermal desensitization intermittent evaporator according to claim 1, wherein a flame-retardant thermal-insulation material is filled around the upper base of the heating tube base.

9. The thermal desensitization intermittent evaporator according to claim 8, wherein the flame-retardant thermal-insulation material is asbestos or light-weight foam brick.

10. The thermal desensitization intermittent evaporator according to claim 1, wherein a high-heat-conduction granular refractory material is filled around the lower base of the heating tube base.

11. The thermal desensitization intermittent evaporator according to claim 10, wherein the high-heat-conduction granular refractory material is quartz sand or magnesia.

12. The thermal desensitization intermittent evaporator according to claim 2, wherein the gas injection hole is formed on the shell at the lower base of the heating tube base.

13. The thermal desensitization intermittent evaporator according to claim 1, wherein the upper base is a conductive non-heat-conduction material.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0037] FIG. 1 is a structural diagram of an intermittent evaporator in example 6.

[0038] FIG. 2 is a structural diagram of an intermittent evaporator in example 7.

[0039] FIG. 3 is a structural diagram of an intermittent evaporator in example 8.

DESCRIPTION OF THE EMBODIMENTS

[0040] Next, the technical solution in embodiments of the disclosure will be clearly and completely described in combination with drawings in the embodiments of the disclosure. Obviously, the described embodiments are only some embodiments of the disclosure but not all the embodiments. Based on the embodiments of the disclosure, all other embodiments obtained by persons of ordinary skill in the art without creative efforts are included within the scope of protection of the disclosure.

[0041] Example 1: a pressurization thermo-sensitive gasification consolidation method combined with a method (ZL200810156787.5) for pressurization vacuum preloading consolidation treatment of soft soil and a drainage plate and filter cloth for consolidation of sludge and a drainage plate core (ZL200910181702.3) includes the following steps:

[0042] S1, disposing the thermal desensitization intermittent evaporator in the bottom area of a vacuum preloading drainage plate in a sludge reinforced area, and starting heating, and injecting the high-pressure steam from the thermal desensitization intermittent evaporator when heating;

[0043] S2, heating to 200° C., maintaining for 6 min, and then stopping for 12 min, vacuumizing until the pressure reached 90 kPa, and repeating the above intermittent heating process;

[0044] S3, when the liquid limit index of the surrounding reinforced soil was <0.98, and stopping heating, so as to complete gasification consolidation.

[0045] Referring to example 1, examples 2˜5 are as shown in Table below:

TABLE-US-00001 Heating Maintaining Stopping Number temperature ° C. time min time min Example 2 100 60 120 Example 3 160 120 240 Example 4 300 8 16 Example 5 400 3 6

[0046] Example 6: as shown in FIG. 1, a thermal desensitization intermittent evaporator for a pressurization thermo-sensitive gasification consolidation method included a shell 1 and 2 heating bodies disposed in the shell 1, the heating body 2 including an electrical heating body 2.1 and a wire 2.2 connecting the electrical heating body 2.1, the wire 2.2 being lead out from the shell 1 to connect a power source, wherein the electrical heating body 2.1 included a heating tube base 2.1.1 and a metal joint 2.1.2 mounted on the top of the heating tube base 2.1.1, the metal joint 2.1.2 connected the wire 2.2, the heating tube base 2.1.1 included upper and lower two bases 2.1.1a and 2.1.1b, the upper base 2.1.1a was graphite, the lower base 2.1.1b was quartz, and the upper base 2.1.1a was connected with the metal joint 2.1.1. The whole heating tube base 2.1.1 was molded in quartz and graphite moulds via compaction sintering, the metal joint 2.1.2 of the heating tube base 2.1.1 was wrapped with high-temperature silica gel 3, and asbestos 4 was filled around the upper base 2.1.1a of the heating tube base 2.1.1. The magnesia 5 was filled around the lower base 2.1.1b of the heating tube base 2.1.1, and a gas injection hole 6 was formed on the shell 1 at the lower base 2.1.1b of the heating tube base 2.1.1.

[0047] Example 7: as shown in FIG. 2, referring to example 6, the shell 1 was divided into upper and lower parts 1.1 and 1.2 between which a baffle 7 was arranged for spacing, the baffle 7 was provided with a spliced eye 7.1, the heating tube base 2.1.1 was inserted into the spliced eye 7.1 to be fixed, and the metal joint 2.1.2 was located in the upper shell 1.1. The breakage of the heating tube base in the shell due to displacement was effectively prevented. The refractory material was easy to break off because of its strong rigidity.

[0048] Example 8: as shown in FIG. 3, referring to example 7, the lower shell 1.2 was a ceramic micropore sleeve, the upper shell 1.1 was carbon steel, the cap on the top of the upper shell 1.1 was sealed, and the cap was provided with a sealing device.

[0049] The existing consolidation theory is a Terzaghi's theory more than 100 years ago, namely, water molecules are dissipated by virtue of pore pressure, and water cannot be dissipated to a certain extent. In the disclosure, the thermal desensitization intermittent evaporator is arranged at the bottom of the vacuum preloading drainage plate to generate superheated steam to be injected around under high temperature and high pressure so that the water molecule is improved in activity and quickly flows to the low temperature area, the permeation coefficient is doubled if the temperature is raised by 10° C., the superheated steam is generated in the later to be dissipated to the surrounding soil, and water molecules in vacuum environment are gasified at 45° C. so that the water content in soil is rapidly reduced. Vacuum preloading is from flowing plastic to soft plastic. The high-temperature high-pressure steam makes the sludge (sewage sludge) soft plastic and then hard plastic. The strength of the soil is multiplied. The intermittent effect is to allow water molecules to re-enter an object, and then to be injected out in a way of high-temperature high-pressure steam when heating again so as to improve the diffusion radius of heat, thereby improving the efficiency of consolidation.