CN101445668A - Direct everbright fast orange GGL pollution-free preparation process - Google Patents

Abstract

The invention relates to a direct everbright fast orange GGL pollution-free preparation process, comprising the steps as follows: (1) condensation: 23500L-24000L of water, 1290kg of p-amino-azo-benzene-4-sulfoacid with the purity of 100%, and 790kg of 4-4'-binitro diphenylethyllene-2-2'-disulfonic acid with the purity of 100% are sequentially added into a condensation reaction kettle to stir and pulp for 30-40min; sodium hydroxide is slowly added in batches to adjust pH value to 7.5-8 and then 800kg of sodium hydroxide is added; steam intake valve is opened, the temperature is increased to 100-102 DEG C within 1-1.5h when the detected pH value reaches 13-13.5, and stirring is continued for 12-12.5h at the temperature; (2) preparation of glucose solution; (3) reduction: the glucose solution is added into the condensation reactant; (4) drying. The process simplifies the working procedures and shortens the reaction cycle; raw stock direct spraying method is employed to achieve zero draining of waste water produced by the process; compared with the traditional process, the productivity is greatly improved; and the process is not only energy-efficient but also beneficial to environmental protection as the pollution to the environment is reduced.

Description

The direct Fast Orange GGL pollution-free preparation process

Technical field

The present invention relates to a kind of substantive dyestuff production technique, particularly a kind of direct Fast Orange GGL pollution-free preparation process.

Background technology

At present, China is one of maximum in the world DYE PRODUCTION country, also is textile exports big country.The most of product of China's dye industry is an azoic dyestuff at present.Yet the production technology of azo dyes and intermediate thereof is being faced with an enormous impact, has to change " safely cleaning type " production technique into by present " contaminate environment type " production technique.

Material after major part will be reduced in the traditional DYE PRODUCTION technology after-filtration of saltouing obtains filter cake, the after drying of pulling an oar again.Filter in the waste liquid that produces in this operation and contain objectionable impuritiess such as a large amount of salt, acid, alkali, serious environment pollution therefore must handle the back discharging to waste liquid, but this need drop into great amount of manpower and material resources, time.Not only increase product cost, also environment has been caused pollution to a certain degree.If can pass through process modification, improve the magma solid content, remove filtration and pulping process in the technology.The waste water consumption that produces in technology, can be produced huge economic benefit and social benefit undoubtedly.

Traditional technology need add a large amount of sodium-chlor, it is separated out from solution, and then after filtration color is separated with coloured brine waste, and spraying drying is carried out in paste water making beating again, and adds an amount of sodium sulfate and be made into standard substance; Traditional technology has produced about 24000 liters of a large amount of brine waste, and processing costs is quite high.

Summary of the invention

The objective of the invention is to overcome above-mentioned weak point, a kind of novel energy-saving high-efficiency is provided, improves the quality of products, be beneficial to the direct Fast Orange GGL pollution-free preparation process of environmental protection.

The technical solution adopted in the present invention is for achieving the above object: a kind of direct Fast Orange GGL pollution-free preparation process is characterized in that implementation step comprises:

(1) condensation:

In the condensation reaction still, add 23500L～24000L water earlier, add purity again and be 100% P-aminoazobenzene-4-sulfonic acid 1290kg and purity and be 4-4 '-dinitrobenzene diphenylethyllene-2-2 '-disulfonic acid 790kg of 100%, stirring to pulp 30～40 minutes, slowly add sodium hydroxide then in batches and adjust pH=7.5～8, and then adding sodium hydroxide 800Kg, open the steam inlet valve, in 1～1.5 hour, be rapidly heated to t=100～102 ℃, detect pH=13～13.5 with acidometer, control this temperature and continue stirring action 12～12.5 hours;

(2) preparation glucose solution:

In another stock kettle, put into 800～850L water, stir, add glucose 350kg, and be warming up to t=70～75 ℃, treat that material all stops to stir after the dissolving standby with steam;

(3) reduction:

Open the recirculated water valve after condensation reaction finishes, with reaction condensate in 1～1.5 hour internal cooling to t=75～78 ℃; Add the good glucose solution of dissolving then first quick and back slow, the reinforced time was controlled at 1～1.5 hour, and glucose solution adds the back and continued stirring action 2 hours, behind the reduction reaction terminal point, opens the recirculated water valve and cools to t=50 ℃, adjusts back pH=7～8 with hydrochloric acid again;

(4) drying:

The reduction reaction material is directly delivered to the drying tower spraying drying, and inlet temperature is set to t _{Go into}=105 ℃, temperature out t _{Go out}=300 ℃, prepare finished product.

The invention has the beneficial effects as follows: change direct everbright fast orange traditional processing technology, remove press filtration, pulping process, simplified operation, saved equipment, shortened reaction time; Adopt the direct spray method of magma, reach the processing wastewater zero release, manufacture craft is simple.The saving of the present invention of comparing with the traditional technology sodium-chlor 4500Kg of usefulness that saltouts, there is the auxiliary agent when becoming the dyestuff use in the dyestuff in the inorganic salt that generate in the reaction, simultaneously because the operation shortening, avoided the loss of material machinery, greatly reduce raw materials cost, yield has improved 10～12% than traditional technology.Both saved a large amount of energy, alleviated pollution again, outstanding full technology non-wastewater discharge and the save energy of embodying environment.Improve greatly and produce qualified ratio, reduce production costs effectively.

Description of drawings

Fig. 1 is the traditional preparation process process flow sheet;

Fig. 2 is preparation technology's schema of the present invention.

Embodiment

Below in conjunction with accompanying drawing and preferred embodiment, to according to embodiment provided by the invention, details are as follows for feature:

As shown in Figure 2, a kind of direct Fast Orange GGL pollution-free preparation process is characterized in that implementation step comprises:

(1) condensation:

In the condensation reaction still, add 23500L～24000L water earlier, add purity again and be 100% P-aminoazobenzene-4-sulfonic acid 1290kg and purity and be 4-4 '-dinitrobenzene diphenylethyllene-2-2 '-disulfonic acid 790kg of 100%, stirring to pulp 30～40 minutes, slowly add sodium hydroxide then in batches and adjust pH=7.5～8, and then adding sodium hydroxide 800Kg, open the steam inlet valve, in 1～1.5 hour, be rapidly heated to t=100～102 ℃, detect pH=13～13.5 with acidometer, control this temperature and continue stirring action 12～12.5 hours;

(2) preparation glucose solution:

In another stock kettle, put into 800～850L water, stir, add glucose 350kg, and be warming up to t=70～75 ℃, treat that material all stops to stir after the dissolving standby with steam;

(3) reduction:

Open the recirculated water valve after condensation reaction finishes, with reaction condensate in 1～1.5 hour internal cooling to t=75～78 ℃; Add the good glucose solution of dissolving then first quick and back slow, the reinforced time was controlled at 1～1.5 hour, and glucose solution adds the back and continued stirring action 2 hours, behind the reduction reaction terminal point, opens the recirculated water valve and cools to t=50 ℃, adjusts back pH=7～8 with hydrochloric acid again;

(4) drying:

The reduction reaction material is directly delivered to the drying tower spraying drying, and inlet temperature is set to t _{Go into}=105 ℃, temperature out t _{Go out}=300 ℃, prepare finished product.

Reaching 200% through prepared finished product of the present invention must measure: 4200kg.

Contrast traditional preparation process technology shown in Figure 1, technology of the present invention is simple, and is easy and simple to handle, and do not have waste liquid and discharge the implementation result highly significant.

Above-mentioned detailed description of this direct Fast Orange GGL pollution-free preparation process being carried out with reference to embodiment; be illustrative rather than determinate; can make all size that varies in size as required; therefore in the variation and the modification that do not break away under the general plotting of the present invention, should belong within protection scope of the present invention.

Claims (1)

1, a kind of direct Fast Orange GGL pollution-free preparation process is characterized in that implementation step comprises:

(1) condensation:

In the condensation reaction still, add 23500L～24000L water earlier, add purity again and be 100% P-aminoazobenzene-4-sulfonic acid 1290kg and purity and be 4-4 '-dinitrobenzene diphenylethyllene-2-2 '-disulfonic acid 790kg of 100%, stirring to pulp 30～40 minutes, slowly add sodium hydroxide then in batches and adjust pH=7.5～8, and then adding sodium hydroxide 800Kg, open the steam inlet valve, in 1～1.5 hour, be rapidly heated to t=100～102 ℃, detect pH=13～13.5 with acidometer, control this temperature and continue stirring action 12～12.5 hours;

(2) preparation glucose solution:

In another stock kettle, put into 800～850L water, stir, add glucose 350kg, and be warming up to t=70～75 ℃, treat that material all stops to stir after the dissolving standby with steam;

(3) reduction:

Open the recirculated water valve after condensation reaction finishes, with reaction condensate in 1～1.5 hour internal cooling to t=75～78 ℃; Add the good glucose solution of dissolving then first quick and back slow, the reinforced time was controlled at 1～1.5 hour, and glucose solution adds the back and continued stirring action 2 hours, behind the reduction reaction terminal point, opens the recirculated water valve and cools to t=50 ℃, adjusts back pH=7～8 with hydrochloric acid again;

(4) drying:

The reduction reaction material is directly delivered to the drying tower spraying drying, and inlet temperature is set to t _{Go into}=105 ℃, temperature out t _{Go out}=300 ℃, prepare finished product.