CN103319068A - Novel special compound coagulant for paper sludge - Google Patents
Novel special compound coagulant for paper sludge Download PDFInfo
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- CN103319068A CN103319068A CN2013102454339A CN201310245433A CN103319068A CN 103319068 A CN103319068 A CN 103319068A CN 2013102454339 A CN2013102454339 A CN 2013102454339A CN 201310245433 A CN201310245433 A CN 201310245433A CN 103319068 A CN103319068 A CN 103319068A
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- coagulating agent
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- mill sludge
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Abstract
The invention belongs to the technical field of accessories in the papermaking industry, and particularly relates to a novel special compound coagulant for paper sludge. The novel special compound coagulant comprises an inorganic coagulant and an organic coagulant, wherein the inorganic coagulant is selected from ferric trichloride or aluminum chloride or ferric sulfate, the organic coagulant is selected from polyacrylamide or polyamide. The novel special compound coagulant for paper sludge contains 96 percent of ferric trichloride and 4 percent of polyamide, which has a perfect effect on improving the paper sludge. By using the novel special compound coagulant for paper sludge, provided by the invention, the dehydration property of the sludge is enhanced, the activity of the sludge is improved, and the agglomeration property of the sludge is improved.
Description
Technical field
The invention belongs to the attached technical field of paper industry, relate in particular to a kind of novel papermaking mud specific complex type coagulating agent.
Background technology
Particle in the paper mill sludge is mainly colloidal solid, has complicated structure, and is very strong with the bonding force of water.The form that exists in mud by moisture can be divided into interstitial water, capillary water, surface adsorption water and internal junction Heshui.The moisture of surface adsorption water for adsorbing under surface tension effects, colloidal solid all with the electric charge of same nature, repel mutually, thereby surface adsorption water is removed relatively difficulty with common concentrated or dewatering.Only have adding can play the coagulating agent of coagulation, make the electric charge of colloidal solid obtain neutralization after, reunite together.Its specific surface area reduced after particle increased, and surface tension decreases, and surface adsorption water also separates from colloidal solid thereupon.
Summary of the invention
The present invention is directed to the defective that dehydration rate is not high, running cost is higher that the paper mill sludge coagulating agent has in the prior art, aim to provide a kind of novel papermaking mud specific complex type coagulating agent.Use this kind novel papermaking mud specific complex type coagulating agent, improved the dehydration property of paper mill sludge, improved the activity of paper mill sludge, improved the reunion performance of paper mill sludge, reduced cost.
In order to solve the problems of the technologies described above, the present invention is solved by following technical proposals.
A kind of novel papermaking mud specific complex type coagulating agent comprises inorganic coagulant and organic coagulating agent.Paper mill sludge scrubbing coagulating agent commonly used is divided into inorganic coagulant and organic coagulating agent two classes.Inorganic coagulant can be used as skeleton, makes the mud flco keep porous when dewatering, and stops the collapse of flco, reduces the compressibility of mud cake, but also little to the effect that improves filtration velocity; Organic coagulating agent can increase substantially sludge filtration speed, but can not reduce the compressibility of mud.Coagulating agent can make electronegative mud granule take off surely, and the water that adheres on its surface is changed into free-water, thereby inorganic coagulant and organic coagulating agent compound use can improve the dewatering of mud well.
As preferably, inorganic coagulant is selected iron trichloride or aluminum chloride or ferric sulfate.Mud colloidal solid in the paper mill sludge repels mutually with the electric charge of same nature, has hindered the gathering of particle.Add the inorganic coagulant that can play neutralizing effect, make the electric charge of colloidal solid obtain being unsteady state after the neutralization, be attached on together, then settle down.
As preferably, organic coagulating agent is selected polyacrylamide or polymeric amide.When organic coagulating agent is selected polyacrylamide or polymeric amide, can increase substantially the filtration velocity of paper mill sludge.
As preferably, a kind of novel papermaking mud specific complex type coagulating agent is comprised of the component of following weight percentage:
Iron trichloride or aluminum chloride or ferric sulfate 92～99%;
Polyacrylamide or polymeric amide 1～8%.
As preferably, a kind of novel papermaking mud specific complex type coagulating agent is comprised of the component of following weight percentage:
Iron trichloride 96%;
Polymeric amide 4%.
Novel papermaking mud specific complex type coagulating agent select iron trichloride to content be 96%, when the content of polymeric amide was 4%, iron(ic) chloride and polymeric amide co-catalysis effect are best, and be the highest to the de-water ratio of paper mill sludge.
As preferably, a kind of novel papermaking mud specific complex type coagulating agent is comprised of the component of following weight percentage:
Ferric sulfate 95～98%;
Polymeric amide 2～5%.
When novel papermaking mud specific complex type coagulating agent selected ferric sulfate to be inorganic coagulant, the content of ferric sulfate was 95～98%, and the content of polymeric amide is 2～5%, and the effect of ferric sulfate and polymeric amide co-catalysis is more satisfactory.
As preferably, a kind of novel papermaking mud specific complex type coagulating agent is comprised of the component of following weight percentage:
Aluminum chloride 96～99%;
Polymeric amide 1～4%.
When novel papermaking mud specific complex type coagulating agent selected ferric sulfate to be inorganic coagulant, the content of aluminum chloride was 96～99%, and the content of polymeric amide is 1～4%, and the effect of aluminum chloride and polymeric amide co-catalysis is more satisfactory.
The invention provides a kind of novel papermaking mud specific complex type coagulating agent, cost is low, and repair time is short, and repairing effect is good, and success ratio is high.Use rear instant effect, low toxicity, free from environmental pollution.Attached technical field at paper industry has a good application prospect.
Embodiment
Below in conjunction with embodiment the present invention is described in further detail.
Embodiment 1
A kind of novel papermaking mud specific complex type coagulating agent comprises inorganic coagulant and organic coagulating agent.Inorganic coagulant is selected iron trichloride; Organic coagulating agent is selected polymeric amide.Component by following weight percentage forms:
Iron trichloride 92%;
Polymeric amide 8%.
Select water ratio be 90% paper mill sludge as subjects, the amount of the novel papermaking mud specific complex type coagulating agent among the embodiment 1 by 65 kg/ton paper mill sludges joined in the subjects.The rear pressurize 40min of for the first time pressurization, pressurize 25min after the pressurization compares with the special-purpose iron trichloride coagulating agent of existing paper mill sludge for the second time.
Process after 25 minutes, when selecting novel papermaking mud specific complex type coagulating agent, the water ratio of paper mill sludge is reduced to 45%.When selecting the special-purpose iron trichloride coagulating agent of existing paper mill sludge, the water ratio of paper mill sludge is reduced to 56%.
Embodiment 2
A kind of novel papermaking mud specific complex type coagulating agent comprises inorganic coagulant and organic coagulating agent.Inorganic coagulant is selected iron trichloride; Organic coagulating agent is selected polymeric amide.Component by following weight percentage forms:
Iron trichloride 96%;
Polymeric amide 4%.
Selecting water ratio is that 90% paper mill sludge is as subjects, the amount of novel papermaking mud specific complex type coagulating agent among the embodiment 2 by 65 kg/ton paper mill sludges joined in the subjects, the rear pressurize 40min of for the first time pressurization, pressurize 25min after the pressurization compares with the special-purpose iron trichloride coagulating agent of existing paper mill sludge for the second time.
Process after 25 minutes, when selecting novel papermaking mud specific complex type coagulating agent, the water ratio of paper mill sludge is reduced to 40%.When selecting the special-purpose iron trichloride coagulating agent of existing paper mill sludge, the water ratio of paper mill sludge is reduced to 56%.
Embodiment 3
A kind of novel papermaking mud specific complex type coagulating agent comprises inorganic coagulant and organic coagulating agent.Inorganic coagulant is selected iron trichloride; Organic coagulating agent is selected polymeric amide.Component by following weight percentage forms:
Iron trichloride 99%;
Polymeric amide 1%.
Selecting water ratio is that 90% paper mill sludge is as subjects, the amount of novel papermaking mud specific complex type coagulating agent among the embodiment 3 by 65 kg/ton paper mill sludges joined in the subjects, the rear pressurize 40min of for the first time pressurization, pressurize 25min after the pressurization compares with the special-purpose iron trichloride coagulating agent of existing paper mill sludge for the second time.
Process after 25 minutes, when selecting novel papermaking mud specific complex type coagulating agent, the water ratio of paper mill sludge is reduced to 42%.When selecting the special-purpose iron trichloride coagulating agent of existing paper mill sludge, the water ratio of paper mill sludge is reduced to 56%.
Embodiment 4
A kind of novel papermaking mud specific complex type coagulating agent comprises inorganic coagulant and organic coagulating agent.Inorganic coagulant is selected ferric sulfate; Organic coagulating agent is selected polymeric amide.Component by following weight percentage forms:
Ferric sulfate 95%;
Polymeric amide 5%.
Selecting water ratio is that 90% paper mill sludge is as subjects, the amount of novel papermaking mud specific complex type coagulating agent among the embodiment 4 by 65 kg/ton paper mill sludges joined in the subjects, the rear pressurize 40min of for the first time pressurization, pressurize 25min after the pressurization compares with the special-purpose iron trichloride coagulating agent of existing paper mill sludge for the second time.
Process after 25 minutes, when selecting novel papermaking mud specific complex type coagulating agent, the water ratio of paper mill sludge is reduced to 51%.When selecting the special-purpose iron trichloride coagulating agent of existing paper mill sludge, the water ratio of paper mill sludge is reduced to 56%.
Embodiment 5
A kind of novel papermaking mud specific complex type coagulating agent comprises inorganic coagulant and organic coagulating agent.Inorganic coagulant is selected ferric sulfate; Organic coagulating agent is selected polymeric amide.Component by following weight percentage forms:
Ferric sulfate 96%;
Polymeric amide 4%.
Selecting water ratio is that 90% paper mill sludge is as subjects, the amount of novel papermaking mud specific complex type coagulating agent among the embodiment 5 by 65 kg/ton paper mill sludges joined in the subjects, the rear pressurize 40min of for the first time pressurization, pressurize 25min after the pressurization compares with the special-purpose iron trichloride coagulating agent of existing paper mill sludge for the second time.
Process after 25 minutes, when selecting novel papermaking mud specific complex type coagulating agent, the water ratio of paper mill sludge is reduced to 48%.When selecting the special-purpose iron trichloride coagulating agent of existing paper mill sludge, the water ratio of paper mill sludge is reduced to 56%.
Embodiment 6
A kind of novel papermaking mud specific complex type coagulating agent comprises inorganic coagulant and organic coagulating agent.Inorganic coagulant is selected ferric sulfate; Organic coagulating agent is selected polymeric amide.Component by following weight percentage forms:
Ferric sulfate 98%;
Polymeric amide 2%.
Selecting water ratio is that 90% paper mill sludge is as subjects, the amount of novel papermaking mud specific complex type coagulating agent among the embodiment 6 by 65 kg/ton paper mill sludges joined in the subjects, the rear pressurize 40min of for the first time pressurization, pressurize 25min after the pressurization compares with the special-purpose iron trichloride coagulating agent of existing paper mill sludge for the second time.
Process after 25 minutes, when selecting novel papermaking mud specific complex type coagulating agent, the water ratio of paper mill sludge is reduced to 46%.When selecting the special-purpose iron trichloride coagulating agent of existing paper mill sludge, the water ratio of paper mill sludge is reduced to 56%.
Embodiment 7
A kind of novel papermaking mud specific complex type coagulating agent comprises inorganic coagulant and organic coagulating agent.Inorganic coagulant is selected aluminum chloride; Organic coagulating agent is selected polymeric amide.Component by following weight percentage forms:
Aluminum chloride 96%;
Polymeric amide 4%.
Selecting water ratio is that 90% paper mill sludge is as subjects, the amount of novel papermaking mud specific complex type coagulating agent among the embodiment 7 by 65 kg/ton paper mill sludges joined in the subjects, the rear pressurize 40min of for the first time pressurization, pressurize 25min after the pressurization compares with the special-purpose iron trichloride coagulating agent of existing paper mill sludge for the second time.
Process after 25 minutes, when selecting novel papermaking mud specific complex type coagulating agent, the water ratio of paper mill sludge is reduced to 45%.When selecting the special-purpose iron trichloride coagulating agent of existing paper mill sludge, the water ratio of paper mill sludge is reduced to 56%.
Embodiment 8
A kind of novel papermaking mud specific complex type coagulating agent comprises inorganic coagulant and organic coagulating agent.Inorganic coagulant is selected aluminum chloride; Organic coagulating agent is selected polymeric amide.Component by following weight percentage forms:
Aluminum chloride 98%;
Polymeric amide 2%.
Selecting water ratio is that 90% paper mill sludge is as subjects, the amount of novel papermaking mud specific complex type coagulating agent among the embodiment 8 by 65 kg/ton paper mill sludges joined in the subjects, the rear pressurize 40min of for the first time pressurization, pressurize 25min after the pressurization compares with the special-purpose iron trichloride coagulating agent of existing paper mill sludge for the second time.
Process after 25 minutes, when selecting novel papermaking mud specific complex type coagulating agent, the water ratio of paper mill sludge is reduced to 49%.When selecting the special-purpose iron trichloride coagulating agent of existing paper mill sludge, the water ratio of paper mill sludge is reduced to 56%.
Embodiment 9
A kind of novel papermaking mud specific complex type coagulating agent comprises inorganic coagulant and organic coagulating agent.Inorganic coagulant is selected aluminum chloride; Organic coagulating agent is selected polymeric amide.Component by following weight percentage forms:
Aluminum chloride 99%;
Polymeric amide 1%.
Selecting water ratio is that 90% paper mill sludge is as subjects, the amount of novel papermaking mud specific complex type coagulating agent among the embodiment 9 by 65 kg/ton paper mill sludges joined in the subjects, the rear pressurize 40min of for the first time pressurization, pressurize 25min after the pressurization compares with the special-purpose iron trichloride coagulating agent of existing paper mill sludge for the second time.
Process after 25 minutes, when selecting novel papermaking mud specific complex type coagulating agent, the water ratio of paper mill sludge is reduced to 52%.When selecting the special-purpose iron trichloride coagulating agent of existing paper mill sludge, the water ratio of paper mill sludge is reduced to 56%.
In a word, the above only is preferred embodiment of the present invention, and all equalizations of doing according to the present patent application claim change and modify, and all should belong to the covering scope of patent of the present invention.
Claims (6)
1. a novel papermaking mud specific complex type coagulating agent is characterized in that: comprise inorganic coagulant and organic coagulating agent.
2. a kind of novel papermaking mud specific complex type coagulating agent according to claim 1 is characterized in that, inorganic coagulant is selected iron trichloride or aluminum chloride or ferric sulfate; Organic coagulating agent is selected polyacrylamide or polymeric amide.
3. a kind of novel papermaking mud specific complex type coagulating agent according to claim 2 is characterized in that, is comprised of the component of following weight percentage:
Iron trichloride or aluminum chloride or ferric sulfate 92～99%;
Polyacrylamide or polymeric amide 1～8%.
4. a kind of novel papermaking mud specific complex type coagulating agent according to claim 2 is characterized in that, is comprised of the component of following weight percentage:
Iron trichloride 96%;
Polymeric amide 4%.
5. a kind of novel papermaking mud specific complex type coagulating agent according to claim 2 is characterized in that, is comprised of the component of following weight percentage:
Ferric sulfate 95～98%;
Polymeric amide 2～5%.
6. a kind of novel papermaking mud specific complex type coagulating agent according to claim 2 is characterized in that, is comprised of the component of following weight percentage:
Aluminum chloride 96～99%;
Polymeric amide 1～4%.
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| CN2013102454339A CN103319068A (en) | 2013-06-18 | 2013-06-18 | Novel special compound coagulant for paper sludge |
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|---|---|---|---|
| CN2013102454339A CN103319068A (en) | 2013-06-18 | 2013-06-18 | Novel special compound coagulant for paper sludge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108409435A (en) * | 2018-04-27 | 2018-08-17 | 福建龙马环卫装备股份有限公司 | A kind of sludge aerobic compost method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101367597A (en) * | 2008-09-17 | 2009-02-18 | 广州绿由工业弃置废物回收处理有限公司 | Flocculating agent for sludge dewatering and sludge dewatering method |
| CN102358680A (en) * | 2011-10-14 | 2012-02-22 | 安徽山鹰纸业股份有限公司 | Dehydration method for papermaking waste water sludge |
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2013
- 2013-06-18 CN CN2013102454339A patent/CN103319068A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101367597A (en) * | 2008-09-17 | 2009-02-18 | 广州绿由工业弃置废物回收处理有限公司 | Flocculating agent for sludge dewatering and sludge dewatering method |
| CN102358680A (en) * | 2011-10-14 | 2012-02-22 | 安徽山鹰纸业股份有限公司 | Dehydration method for papermaking waste water sludge |
Non-Patent Citations (1)
| Title |
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| 张扬等: "造纸污泥脱水与污泥焚烧处理技术", 《黑龙江造纸》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108409435A (en) * | 2018-04-27 | 2018-08-17 | 福建龙马环卫装备股份有限公司 | A kind of sludge aerobic compost method |
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Application publication date: 20130925 |