CN1074457C

CN1074457C - Non-phosphorus detergent

Info

Publication number: CN1074457C
Application number: CN96120707A
Authority: CN
Inventors: 魏忠汉; 陈虹
Original assignee: Wei Hanjun
Current assignee: Wei Hanjun
Priority date: 1996-11-25
Filing date: 1996-11-25
Publication date: 2001-11-07
Anticipated expiration: 2016-11-25
Also published as: CN1155578A

Abstract

The present invention belongs to a washing article of a non-surface activated and non-soap class, namely a non-phosphorus detergent prepared from pulverized coal ash of scrap of power plants. The present invention is characterized in that the pulverized coal ash produces a white fusant in a solid-state reaction by alkalization, then gelatine AL (OH) 3 of a crystallizing agent is added into the white fusant, under certain conditions, the white fusant becomes a white crystal, namely a complex salt of sodium aluminosilicate, and at last, the white crystal is made into the detergent, washing powder and a degreasing agent. The present invention uses the complex salt of sodium aluminosilicate to replace concentrated washing articles prepared form various components, such as sodium tripolyphosphate, etc., solves water pollution brought by the washing articles containing phosphorus and ensures humans' health. The present invention also has softening and water purifying functions, additionally reduces the waste of national resource and the environmental pollution brought by the pulverized coal ash of the power plant for the waste utilization of the power plants and has obvious economical and social benefits.

Description

Preparation of washing molecular sieve from fly ash

The present invention belongs to a non-surface active non-soap detergent, i.e. it utilizes the waste flyash of power plant to make detergent, washing powder and degreasing agent.

The prior art washing articles are generally formed by mixing sodium tripolyphosphate, sodium sulfate, sodium metasilicate, surfactant (such as sodium dodecyl benzene sulfonate), non-surfactant and the like, but phosphide is one of the largest natural enemies of water resource damage, and the washing articles made of phosphide are forbidden in 2000 by the paris conference of the united nations.

Aiming at the defects of the prior art, the invention provides a concentrated detergent, washing powder and a degreasing agent which do not contain phosphide and are prepared from power plant waste-fly ash, so that the pollution to water resources is reduced, the water resources are softened and purified, the health of people is guaranteed, the ecological balance is protected, the cost is reduced, and the resources are saved.

The technical solution of the invention is as follows: alkalizing fly ash to produce white melt under solid phase reaction, adding crystallizing agent (also called directing agent) colloid AI (OH)₃Crystallizing under certain conditions to obtain white crystal, i.e. sodium aluminosilicate double salt, [ also called NaA type molecular sieve for Washing (WMS)]Chemical formula is 6Na₂O·6AL₂O₃·12SiO₂·27H₂And O. It is further produced into detergent, washing powder and degreaser.

Colloid AL (OH)₃The preparation method comprises the following steps: (1) (washing with deionized Water) (2)

The process flow of the invention is as follows: washing fly ash → drying → screening → adding alkalizer (NaOH, Na)₂CO₃) According to the content of SiO in the fly ash₂、AL₂O₃The percentage of the raw materials is added, generally the addition amount is 1 to 1.5kg → mixing → solid phase reaction, the temperature is 800-Dry grinding for 120 hours → sieving → hydrolysis reaction → adding crystallizing agent colloid AL (OH) at 80-100 deg.C₃5-15% (in terms of SiO)₂Content addition), crystallization is started after 40 minutes, a small amount of NaA type washing molecular sieve can be added during crystallization for catalytic crystallization, and crystallization is completed in 6-8 hours → white crystals, namely sodium aluminosilicate double salts, are used for later use.

Preparing a concentrated detergent: dissolving sodium aluminosilicate double salt in boiling water to obtain saturated solution, adding sulfuric acid to control pH value to 9.5-11.6, adding a little thickener and essence, and adding foaming agent 0.3-3% to obtain the detergent.

The foaming agent is: the addition of the sodium alkyl benzene sulfonate is 1 to 3 percent

The addition amount of oleyl alcohol sodium sulfate is 0.3-1%

Adding0.3-1% (two) of ethylene oxide and dodecyl alcohol to obtain the washing powder (by weight percentage)

70-90% of sodium aluminosilicate double salt and 5-25% of sodium sulfate

Foaming agent 0.3-3% and essence 1-2%

Water 3-5% appropriate amount of thickening agent

(III) preparing degreasing agent (by weight percent)

95-98% of sodium aluminosilicate double salt and 2-5% of thickening agent

The present invention utilizes the waste of power plant, flyash, to produce double salt of sodium aluminosilicate to replace concentrated detergent, washing powder and degreaser produced with sodium tripolyphosphate and other components, and this can soften and purify water resource, ensure the health of people and protect ecological balance. In addition, the waste of national resources is reduced by utilizing the waste of the power plant, the pollution of the coal ash of the power plant to the environment is reduced, and the method has obvious economic and social benefits.

The embodiment of the invention comprises the following steps: 1Kg of fly ash is taken, washed by water to remove impurities such as mud in the fly ash, naturally dried, sieved in a 100-mesh sieve according to SiO in the fly ash₂·AL₂O₃Adding 1.2KgNaOH (or corresponding NaCO)₃) Mixing in mixer, performing solid phase reaction in a roasting furnace at 900 deg.C for 5 hr to obtain white frit, pulverizing, dry-grinding in ball mill for 160 hr, sieving with 9000 mesh sieve, hydrolyzing the fine powder in acid and alkali resistant kettle, adding crystallizing agent such as colloid AL (OH)₃10 percent, starting crystallization at the temperature of 90 ℃ for 40 minutes, then adding a small amount ofNaA type washing molecular sieve for crystallization for 7 hours to obtain white crystals (the industrial production and processing can be shortened to about 1 hour), and obtaining the sodium aluminosilicate double salt for later use. The residual NaOH solution can be recycled.

Preparing a concentrated detergent:

example 1, dissolving the double salt with boiled water to obtain saturated solution, taking 1Kg of saturated solution, adding sulfuric acid to control the pH value to 9.5; adding a plurality of sodium carboxymethylcellulose (until the required concentration is reached); then adding 2 percent of alkyl benzene sulfonic acid sodium salt serving as a foaming agent and a little lemon essence.

Example 2, the same as example 1, sulfuric acid was added to control the pH at 10.6; adding a plurality of sodium carboxymethylcellulose, then adding 0.7% of foaming agent oleyl alcohol sodium sulfate and a little lemon essence.

Example 3, the same as example 1, sulfuric acid was added to control the pH at 11.6; adding a plurality of sodium carboxymethylcellulose, adding 0.7 percent of foaming agent ethylene oxide and dodecyl alcohol, and adding a little lemon essence.

(II) making into washing powder (by weight percent)

Sodium aluminosilicate double salt 77% and sodium sulfate 17%

Sodium dodecyl sulfate 1%, essence 1%

Sodium carboxymethylcellulose, water 3%

(III) degreasing agent

97% of sodium aluminosilicate double salt

Sodium carboxymethylcellulose 3%

Claims

1. A molecular sieve for washing is prepared from powdered coal ash through alkalizing powdered coal ash, solid-phase reaction to obtain white fused mass, adding crystallizing agent to obtain white crystal-compound sodium aluminosilicate salt (6 Na)₂O·6AL₂O₃·12SiO₂·27H₂O, prepared by the following method:

1kg of fly ash is taken, cleaned, dried and sieved by a 100-mesh sieve, and then 1-1.5kg of NaOH or Na is added₂CO₃Mixing uniformly in a mixer, carrying out solid phase reaction in a roasting furnace at 1000 ℃ under 800-₃5-15%, starting crystallization in 40 minutes, adding a small amount of NaA type washing molecular sieve during crystallization, and after crystallization is finished in 6-8 hours, generating sodium aluminosilicate complex salt;

colloid AL (OH)₃Preparation: (1) ；(2) 。