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Quenching tower salt ash softening agent in rotary kiln incineration process and application method

An application method, the technology of quenching tower, applied in chemical instruments and methods, descaling and water softening, water/sludge/sewage treatment, etc., can solve the problems of limited operating space, low efficiency, poor lighting, etc.

Active Publication Date: 2021-08-13
JIANGSU JINGKE TOTAL SOLUTIONS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to poor internal light and limited working space for parking cleaning, manual cleaning is difficult and inefficient. The operating space is limited and there are potential safety hazards. Therefore, the processing cycle is long and affects normal operation.
In order to avoid the inconvenience caused by manual cleaning, the present invention proposes an effective solution to the problem of how to solve the formation of scale substances formed by high-temperature salt ash in the quenching tower

Method used

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  • Quenching tower salt ash softening agent in rotary kiln incineration process and application method
  • Quenching tower salt ash softening agent in rotary kiln incineration process and application method
  • Quenching tower salt ash softening agent in rotary kiln incineration process and application method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] In the comprehensive hazardous waste disposal plant, when the waste brine is reused in the incineration quench tower, because the waste brine contains a large amount of soluble inorganic salts, a large amount of agglomerated ash will be produced with the evaporation of water under high temperature conditions, resulting in hazardous waste Disposal enterprises often need to shut down furnaces and production for manual cleaning, which affects the production efficiency and hazardous waste treatment capacity of enterprises.

[0027] experiment method:

[0028] In order to simulate the temperature, scale sample and brine of the on-site quench tower, the test method is designed:

[0029] A. Scale sample: Take the scale sample from the lower part of the on-site quench tower, and do scale sample analysis (see the data in Table 1), grind the scale sample into fine powder, and use it for preparing the test solution. Add 5-10% to the test sample.

[0030] B. Sodium chloride: indu...

Embodiment 2

[0046] The medicine in Table 2 is carried out compatibility test, and concrete formula is as follows:

[0047] ①Compatibility test 1 formula: PASP 20%, EDTA 4Na 5%, NTA 10%, HIDS 20%, citric acid 10%, DTPMP 7Na 10%, PAPEMP 10%, phytate 3%, ferrocyanide Potassium 3%, Isovitamin C 2%, Sodium Hydroxide 7%;

[0048] ②Compatibility test 2 formula: PASP 15%, EDTA 4Na 10%, NTA 20%, HIDS 6%, citric acid 10%, DTPMP 7Na 12%, PAPEMP 8%, phytate 4%, ferrocyanide Potassium 5%, Isovitamin C 3%, Sodium Hydroxide 7%;

[0049] ③Compatibility test 3 formula: EDTA·4Na 10%, ATMP·4Na 25%, PAAS 25%, citric acid 10%, DTPMP·7Na 12%, PAPEMP 8%, phytate 4%, sodium hydroxide 6%;

[0050] ④ Formula of compatibility test 4: HEDP·4Na 25%, MA-AA·Na 25%, DTPMP·7Na 10%, PAPEMP 10%, EDTA·4Na 5%, citric acid 10%, potassium ferrocyanide 5%, Isovitamin C 3%, sodium hydroxide 7%.

[0051] The specific results are shown in Table 3.

[0052] Table 3 Effects after drug compatibility

[0053]

[0054]

[0...

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Abstract

The invention relates to a quenching tower salt ash softening agent in a rotary kiln incineration process and an application method of the quenching tower salt ash softening agent in the rotary kiln incineration process. The agent comprises the following raw materials in percentage by weight: 10-50% of an amino acid polymer, 1-50% of organic carboxylic acid or salt thereof, 1-50% of organic phosphoric acid or salt thereof, 1-10% of an anti-caking substance, 1-5% of a polyhydroxy compound containing a dienol structure and 1-10% of an acid neutralizer, the raw materials are mixed according to the proportion and then water is added to prepare a solution with the mass concentration of 30%-40% to obtain the quench tower salt ash softening agent, and the pH value of the quench tower salt ash softening agent is larger than or equal to 7. The quenching tower salt ash softening agent can prevent the problem that high-temperature salt ash at the lower part of the wall of the quench tower is scaled and salt-deposited due to the fact that high-salinity wastewater generated after incineration of hazardous wastes is sprayed back to the quench tower and is easy to block a pipeline, and is convenient and simple to use and good in effect.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a quenching tower salt ash softener in a rotary kiln incineration process and an application method. Background technique [0002] There are many types of solid waste and hazardous waste, and there are many classification methods for solid waste. According to its composition, it can be divided into organic waste and inorganic waste; according to its hazard status, it can be divided into hazardous waste (cyanide tailings, mercury-containing waste, etc., see Hazardous Waste Inventory), hazardous waste (referring to corrosion, corruption, highly toxic, infectious, spontaneous combustion, sharp thorns, radioactive waste, etc.) and general waste; according to its form, it can be divided into solid waste (block, granular, powder), semi-solid waste (waste engine oil, etc.) and unconventional solid waste (solid waste containing gaseous or solid substances, such as waste oil drums...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/10C02F5/14C02F5/12
CPCC02F5/105C02F5/145C02F5/125
Inventor 韩成斌张红梅焦文琴杨红学
Owner JIANGSU JINGKE TOTAL SOLUTIONS LTD
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